The DHS Acronyms, Abbreviations, and Terms (DAAT) list contains homeland security related acronyms, abbreviations, and terms that can be found in DHS documents, reports, and the FEMA Acronyms, Abbreviations, and Terms (FAAT) list.
The list may not contain all items used by the various Components of the Department within their individual operations. It is designed as a reference and an aid, not an authoritative source.
Your comments and recommendations are welcome! Please direct your input or questions to [email protected].
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| Acronym/Abbreviation | Definition |
|---|---|
| 28 CFR Part 23 | 28 Code of Federal Regulations Part 23 | I&A | |
| 2SR | Second Stage Review | DHS | |
| 4Wd | Four Wheel Drive | FEMA | |
| A | Activity of Isotope | FEMA | |
| A | Ampere | FEMA | |
| A | Atomic Mass | FEMA | |
| A&E | Architectural and Engineering | FEMA | |
| A&FM | Aviation and Fire Management | FEMA | |
| A&M | Customs and Border Protection Air & Marine (CBP/A&M) | DHS | |
| A/D | Analog/Digital | FEMA | |
| A/N | Alert and Notification (see AN) | FEMA | |
| A2H | America's Second Harvest | FEMA | |
| AA | Affirmative Action | FEMA | |
| AA | Allocation Advice | FEMA | |
| AA | alternatives analysis | CWMD | OGC | |
| AA | Applicant Assistance | FEMA | |
| AA | Approval Authority | FEMA | |
| AA | Atomic Absorption | FEMA | |
| AA | Attribute Authority | FEMA | |
| AA | anti-aircraft improvised explosive device incident | S&T | |
| AAA | Access Approval Authority | DHS | |
| AAA | Agriculture Adjustment Administration | FEMA | |
| AAA | American Ambulance Association | FEMA | |
| AAA | Area Agency on Aging | FEMA | |
| AAACE | Airport Access Authorization to Commercial Establishments | S&T | |
| AAAE | American Association of Airport Executives | TSA | |
| AAC | Activity Address Code | FEMA | |
| AAC | Applicant Assistance Center | FEMA | |
| AACES | Automated, Adaptive Chemical Examination System | FEMA | |
| AACPP | Airport Access Control Pilot Program | FEMA | |
| AACS | Automated Access Control System | FEMA | |
| AAD | Assistant Associate Director | FEMA | |
| AADPIA | Assistant Associate Director for Public & Intergovernmental Affairs | FEMA | |
| AADR | Age-Adjusted Death Rate | FEMA | |
| AAEI | American Association of Exporters and Importers | CBP | |
| AAER | Average Annual Erosion Rate | FEMA | |
| AAFAS | Automated Airborne Flight Alert System | S&T | |
| AAFB | Andrews Air Force Base | DHS | |
| AAML | Agency Aviation Military Liaison | FEMA | |
| AAMS | Automated Acquisition Management System (ProTrac / ProDoc) | FEMA | |
| AAMVA | American Association of Motor Vehicle Administrators | TSA | |
| AAPA | American Association of Port Authorities | CBP | TSA | USCG | |
| AAPD | American Association of People with Disabilities | CRCL | |
| AAR | After action report | FEMA | |
| AAR | Association of American Railroads | FEMA | |
| AAR | After action review | DHS | |
| AASHTO | American Association of State Highway and Transportation Officials | FEMA | TSA | |
| AAU | Association of American Universities | USCIS | S&T | |
| AAVLD | American Association of Veterinary Laboratory Diagnosticians | S&T | |
| ABA | American Bar Association | FEMA | OGC | |
| ABA | American Bus Association | FEMA | |
| ABAG | Association of Bay Area Governments | FEMA | |
| ABC | [Outstanding] American By Choice Award | USCIS | |
| ABC | American Baptist Churches | FEMA | |
| ABC | Arizona Border Control Plan | CBP | |
| ABCI | Arizona Border Control Initiative | CBP | |
| ABCO | Automated Billing & Collection Off-sets | FEMA | |
| ABD | Air Bridge Denial | ICE | |
| ABEL | Agent Based Economic Laboratory | CISA | |
| ABF | Automatic Broadcast Feed | FEMA | |
| ABHS | Alcohol Based Hand Sanitizer | FEMA | |
| ABI | Automated Broker Interface | CBP | |
| ABIED | air-borne improvised explosive device | S&T | |
| ABIH | American Board of Industrial Hygiene | FEMA | |
| ABIS | see IDENT | I&A | |
| ABM | Anti-Ballistic Missile | FEMA | |
| ABMC | American Battle Monuments Commission | DHS | |
| ABNCP | Airborne Command Post | CISA | |
| ABO | Agents of Biological Origin | FEMA | |
| ABRO | Aircraft Base Radio Operator | FEMA | |
| ABS | Arson and Bomb Squad | CISA | I&A | |
| AC | Alternating Current | FEMA | |
| AC | Area Command | FEMA | |
| AC | Area Committee | FEMA | |
| AC | alternating current | S&T | |
| ACAA | Air Carrier Association for Americans | TSA | |
| ACAC | Area Command Aviation Coordinator | FEMA | |
| ACADA | Automatic Chemical Agent Detection and Alarm | CISA | S&T | |
| ACAMS | Automatic Continuous Air Monitoring System | FEMA | |
| ACAP | Agency-wide Corrective Action Program | FEMA | |
| ACAP | Alien Criminal Apprehension Program | ICE | |
| ACBIRC | Advanced Chemical/Biological Integrated Response Course | CISA | S&T | |
| ACC | American Chemistry Council | S&T | |
| ACC | Aviation Command Center | TSA | |
| ACC | Agency Command Center | FEMA | |
| ACC | Air Combat Command | FEMA | |
| ACCS | Accounting Classification Code Structure | FEMA | |
| ACCT | Account | FEMA | |
| ACCT | Accounting Technician | FEMA | |
| ACDA | United States Arms Control and Disarmament Agency | CWMD | |
| ACDO | Advanced Concept Demonstration Office | TSA | |
| ACDP | Aircraft Dispatcher | FEMA | |
| ACDR | Area Commander | FEMA | |
| ACE | Academy of Counter-Terrorist Education | FEMA | |
| ACE | Automated Commercial Environment (secure data portal) | CBP | |
| ACE | Automated Construction Estimate | FEMA | |
| ACE | Accumulated Cyclone Energy | OPS | |
| ACE | American Council on Education | USCIS | CISA | S&T | |
| ACE | Army Corps of Engineers | FEMA | TSA | CISA | |
| ACEP | American College of Emergency Physicians | FEMA | |
| ACF | Administration for Children and Families | FEMA | OPS | |
| ACF | Alternate Care Facility | FEMA | |
| ACF | Alternate Control Facility | FEMA | |
| ACFM | Advanced Certified Floodplain Manager | FEMA | |
| ACGIH | American Council of Government Industrial Hygienists | FEMA | |
| ACH | Automated Clearing House | FEMA | |
| AChE | Acetylcholinesterase | FEMA | |
| ACHP | Advisory Council on Historic Preservation | FEMA | CISA | |
| ACI | Advanced Contracting Initiative | FEMA | OPS | |
| ACI | Approved Course of Instruction | FEMA | |
| ACI | Airports Council International | TSA | PLCY | |
| ACI/NA | Airports Council International--North America | PLCY | |
| ACIP | Advisory Committee on Immunization Practices | FEMA | |
| ACIR | Advisory Commission on Inter-governmental Relations | FEMA | |
| ACIS | Aviation Credential Interoperability Solution | TSA | PLCY | PRIV | |
| ACL | Access Control List | FEMA | |
| ACM | alternative control measure | DHS | |
| ACM | asbestos-containing material | DHS | |
| ACMR | Assistant Cache Manager | FEMA | |
| ACMS | Academy Class Management System | FEMA | |
| ACO | Administrative Contracting Officer | FEMA | |
| ACO | Agency Claims Officer | FEMA | |
| ACO | Agency Collection Officer | FEMA | |
| ACO | Animal Control Officer | FEMA | |
| ACP | Accelerated Conversion Process | FEMA | |
| ACP | Access Control Points | FEMA | CISA | |
| ACP | Allied Communications Publication | FEMA | |
| ACP | Alternate Command Post | FEMA | |
| ACP | Area Command Post | FEMA | |
| ACP | Area Contingency Plan | FEMA | CISA | |
| ACPSEM | Advisory Council on Professional Standards for Emergency Managers | FEMA | |
| ACR | Acreage Conservation Reserve | FEMA | |
| ACR | Advance Confirmation Report | FEMA | |
| ACR | Agency Confirmation Report | FEMA | |
| ACS | Adventist Community Services | FEMA | |
| ACS | Alternate Command Staff | FEMA | |
| ACS | Automated Commercial System | CBP | |
| ACSD | Advanced Container Security Device (see CSD) | DHS | |
| ACSDR | Adventist Community Services Disaster Response | FEMA | |
| ACSI | American Customer Satisfaction Index | FEMA | |
| ACSM | American Congress of Surveying and Mapping | FEMA | CISA | |
| ACT | American Council for Technology | S&T | |
| ACT | Area Command Team | FEMA | |
| ACT FAST | Agent Characteristics Toxicity - First Aid and Special Treatment | FEMA | |
| ACTD | Advanced Concepts Technology Demonstration | FEMA | |
| ACTE | Association of Corporate Travel Executives | DHS | |
| ACTY | Activity | FEMA | |
| ACV | Actual Cash Value | FEMA | |
| ACV | Alarm Check Valve | FEMA | |
| ACVP | Airline Certificate Vetting Program | TSA | PLCY | PRIV | |
| ACWG | Air Cargo Working Group | TSA | |
| AD | Administratively Determined (also AD#) | FEMA | |
| AD | Assistant Director | FEMA | |
| AD | Associate Director | FEMA | |
| AD | Automatic Determination | FEMA | |
| ADA | Americans with Disabilities Act (1992) | CRCL | |
| ADAMS | Automated Disaster Assistance Management System | FEMA | |
| ADASHI | Automated Decision Aid System for Hazardous Incidents | FEMA | |
| ADASP | Aviation Direct Access Screening Program | TSA | S&T | |
| ADD | Automated Deployment Database | OPS | |
| ADDIE | Analysis, Design, Development, Implementation, and Evaluation | FEMA | |
| ADDS | Automated Disaster Deployment System | FEMA | |
| ADEM | Arizona Division of Emergency Management | FEMA | |
| ADEM | Arkansas Department of Emergency Management | FEMA | |
| ADES | Alaska Division of Emergency Services | FEMA | |
| ADFR | Arson Detection for the First Responder | FEMA | |
| ADGGS | Alaska Division of Geological and Geophysical Surveys | FEMA | |
| ADIS | Arrival and Departure Information System | CBP | ICE | USCIS | CISA | I&A | PLCY | PRIV | |
| ADIZ | Air Defense Identification Zone | TSA | |
| ADJ | Adjustable | FEMA | |
| ADL | Automated Distance Learning | FEMA | |
| ADM | Acquisition Decision Memorandum | FEMA | |
| ADM | Admiral | FEMA | |
| ADMIN | Administration | FEMA | |
| ADMIN | Administrative | FEMA | |
| ADMSYS | Admissions System | FEMA | |
| ADO | Airport District Office | FEMA | |
| ADO Team | Assistant Disbursing Officer Team | FEMA | |
| ADOS | Automated Document Ordering System | FEMA | |
| ADP | Automated Data Processing | FEMA | |
| ADPE | Automated Data Processing Equipment | FEMA | |
| ADR | Address | FEMA | |
| ADR | Alternative Dispute Resolution | FEMA | |
| ADR | American Disaster Reserve | FEMA | |
| ADRA | Adventist Development and Relief Agency | FEMA | |
| ADRA | Alternative Dispute Resolution Act | FEMA | |
| ADRA | Air Domain Risk Assessment | TSA | CISA | |
| ADRS | Automated Disaster Reporting System | FEMA | |
| ADTS | Automated Data Telecommunications Service | FEMA | |
| ADVISE | Analysis, Dissemination, Visualization, Insight and Semantic Enhancement | PRIV | |
| ADVON | Advanced Echelon | FEMA | |
| AE | Aero-medical Evacuation | FEMA | |
| AE | Architects and Engineering | FEMA | |
| AEA | American Economic Association | FEMA | |
| AEA | American Electronics Association | PRIV | |
| AEAS | Automated Exercise and Assessment System | FEMA | |
| AEC | Advanced Electronic Classroom | FEMA | |
| AEC | Agency Emergency Coordinator | FEMA | |
| AEC | Army Environmental Center (Aberdeen Proving Ground, Maryland) | FEMA | |
| AEC | Atomic Energy Commission | FEMA | |
| AECB | Atomic Energy and Control Board | FEMA | |
| AECC | Aero-medical Evacuation Control Center | FEMA | |
| AECC | Aero-Medical Evacuation Coordination Center | FEMA | |
| AECC | American Evangelical Christian Church | FEMA | |
| AECE | Aero-medical Evacuation Control Element | FEMA | |
| AECM | Aero-medical Evacuation Crew Members | FEMA | |
| AECR | Achieving Extraordinary Customer Relations | FEMA | |
| AED | Automated External Defibrillator | FEMA | |
| AEGL | Acute Exposure Guidelines Level | FEMA | |
| AEI | American Enterprise Institute | OPA | |
| AEIC | Alaska Earthquake Information Center | FEMA | |
| AEL | Adverse Effect Level | FEMA | |
| AEL | Airborne Exposure Limit | FEMA | |
| AEL | Authorized Equipment List | FEMA | |
| AELT | Aero-medical Evacuation Liaison Team | FEMA | |
| AEMA | Alabama Emergency Management Agency | FEMA | |
| AEOD | Analysis and Evaluation of Operation Data | FEMA | |
| AEP | Airport Emergency Plan | TSA | |
| AERT | Alaska Emergency Response Team | FEMA | |
| AES | Advanced Encryption Standard | FEMA | |
| AES | Aeromedical Evacuation System | FEMA | |
| AES | Automated Export System | CBP | |
| AEW | Airborne Early Warning | CBP | ICE | |
| AF | Acre Feet | FEMA | |
| AF | Air Force | FEMA | |
| AFA | Association of Flight Attendants | TSA | |
| AFB | Air Force Base | FEMA | USCG | CISA | |
| AFCEA | Armed Forces Communications and Electronics Association | USCG | MGMT | |
| AFD | Airport Facility Directory | FEMA | |
| AFEM | Alliance for Fire and Emergency Management | FEMA | |
| AFEWES | Air Force Electronic Warfare Evaluation Simulator | S&T | |
| AFFIRM | Association for Federal Information Resources Management | MGMT | |
| AFG | Assistance to Firefighters Grant Program | FEMA | FLETC | |
| AFGE | American Federation of Government Employees | FEMA | MGMT | |
| AFGWC | Air Force Global Weather Central | FEMA | |
| AFIP | Armed Forces Institute of Pathology | CWMD | |
| AFL-CIO | American Federation of Labor and Congress of Industrialized Organizations | CISA | |
| AFM | Adjudicator's Field Manual | USCIS | |
| AFMIC | Armed Forces Medial Intelligence Center | FEMA | |
| AFMLS | Asset Forfeiture & Money Laundering Section | FLETC | |
| AFMO | Assistant Fire Management Officer | FEMA | |
| AFMS | Automated Forms System | FEMA | |
| AFNSEP | Air Force National Security Emergency Preparedness | FEMA | |
| AFO | Area Field Office | FEMA | |
| AFOC | Air Force Operations Center | FEMA | |
| AFOSC | Air Force Operations Support Center | FEMA | |
| AFRAS | Association for Rescue at Sea | USCG | |
| AFRAT | Air Force Radiation Assessment Team | FEMA | |
| AFRB | Air Force Reserve Base | FEMA | |
| AFRCC | Air Force Rescue Coordination Center | FEMA | |
| AFRES | Air Force Reserve | FEMA | |
| AFRL | Air Force Research Laboratory | FEMA | |
| AFRRI | Armed Force Radiobiology Research Institute | FEMA | |
| AFSA | American financial Services Association | S&T | |
| AFSC | Armed Forces Staff College | FEMA | |
| AFSOF | Air Force Special Operations Forces | FEMA | |
| AFSP | Alien Flight Student Program | TSA | PLCY | PRIV | |
| AFSS | Automated Flight Service Station | FEMA | |
| AFTAC | Air Force Technical Applications Center | FEMA | |
| AFV | alternative fuel vehicle | DHS | |
| AG | Adjutant General | FEMA | OGC | |
| AG | Agriculture | FEMA | |
| AG | Attorney General | FEMA | OGC | |
| AGAR | Alternate Governor’s Authorized Representative | FEMA | |
| AGAUS | Adjutants General Association of the United States | CWMD | |
| AGC | Associate General Counsel | OGC | |
| AGC | Advanced Gas Centrifuge | FEMA | |
| AGC | Association of General Contractors | FEMA | |
| AGCA | Associated General Contractors of America | FEMA | |
| AGCR | Advanced Gas-Cooled Reactor | FEMA | |
| AGE | Aerospace Ground Equipment | FEMA | |
| AGILE | Advanced Geospatial Imagery Library Enterprise | FEMA | |
| AGL | Above Ground Level | FEMA | |
| AGR | Active Guard/Reserve | FEMA | |
| AGS | Aviation Group Supervisor | ICE | |
| AGV | Aggregate Value | FEMA | |
| AGY | Agency | FEMA | |
| AGZ | Actual Ground Zero | FEMA | |
| AH | Alternate Headquarters | FEMA | |
| AHAM | Association of Home Appliance Manufacturers | FEMA | |
| AHCC | Alternate Host Communications Center | FEMA | |
| AHG | Ad Hoc Group | FEMA | |
| AHIMT | All Hazards Incident Management Team | FEMA | |
| AHJ | Agency Having Jurisdiction | FEMA | |
| AHMA | American Hotel and Motel Association | FEMA | |
| AHRQ | Agency for Healthcare Research and Quality | FEMA | |
| AHT | Animal Health Technician | FEMA | |
| AHU | Air Handling Unit | FEMA | |
| AHUA | America Highway User Alliance | FEMA | |
| AI&H | Assistance to Individuals and Households | FEMA | |
| AI2 | Acquisition Improvement Initiative | FEMA | |
| AIA | American Institute of Architects | FEMA | |
| AIA | American Insurance Association | FEMA | |
| AIAA | American Institute of Aeronautics and Astronautics | S&T | |
| AIATP | Antiterrorism Intelligence Awareness Training Program | FLETC | |
| AIBS | American Institute of Biological Sciences | S&T | |
| AIC | Animal Identification Coordinator | FEMA | |
| AIC | Automated Inventory Control (formerly AIS) | FEMA | |
| AID | Agency for International Development | FEMA | |
| AIF | Assistance Information Form | FEMA | |
| AIG | Address Indicating Group | FEMA | |
| AIHEC | American Indian Higher Education Consortium | FEMA | |
| AILA | American Immigration Lawyers Association | USCIS | |
| AIMS | Arson Information Management System | FEMA | |
| AIMS | Automated Inventory Management System | FEMA | |
| AIP | Agreement in Principle | FEMA | |
| AIP | Airport Improvement Program | FEMA | |
| AIP | Assisted Imaging Processing | FEMA | |
| AIPC | All Indian Pueblo Council | FEMA | |
| AIR | active infrared sensor | S&T | |
| AIREP | Aircraft Report | FEMA | |
| AIS | Automated Information System | FEMA | CISA | I&A | |
| AIS | Automated Information Systems (see AIC) | FEMA | |
| AIS | automatic identification system | PLCY | |
| AIT | Aeromedical Isolation Team | FEMA | |
| AIT | automatic identification technology | MGMT | |
| AJ | Administrative Judge | FEMA | |
| AKA | Also Known As | DHS | |
| AKDT | Alaska Daylight Time (GMT - 8) | FEMA | |
| AKST | Alaska Standard Time (GMT - 9) | FEMA | |
| AL | Applicant Liaison | FEMA | |
| ALARA | As Low as Reasonably Achievable | FEMA | |
| ALB | Administration and Logistics Branch (US-VISIT) | CISA | |
| ALC | Agency Location Code | FEMA | |
| ALC | Agency Logistics Center | FEMA | |
| ALC | Annual Letter of Certification | FEMA | |
| ALCC | Airlift Control Center | FEMA | |
| ALCC | Airlift Coordination Cell | FEMA | |
| ALCE | Airlift Control Element | FEMA | |
| ALCOM | Alaskan Command | FEMA | |
| ALE | Additional Living Expenses | FEMA | |
| ALE | Automatic Link Establishment | FEMA | |
| ALERT | Automated Local Evaluation in Real Time | FEMA | |
| ALOHA | Aerial Locations Of Hazardous Atmospheres | FEMA | |
| ALPA | Airline Pilots Association | TSA | |
| ALS | Advanced Life Support | FEMA | OPS | |
| ALSM | Airborne Laser Swath Mapping (aka: "LIDAR") | FEMA | |
| ALT | Alternate | FEMA | |
| ALTRETCO | Alternate Regional Emergency Transportation Coordinator | FEMA | |
| ALUM | Aluminum | FEMA | |
| AM | Amplitude Modulation | FEMA | |
| AM | Ante Meridiem | FEMA | |
| AMA | American Medical Association | FEMA | |
| AMB | Air & Marine Branch (ICE/AMB) | DHS | |
| AMBUS | Ambulance Bus | FEMA | |
| AMC | Air Mobility Command | FEMA | |
| AMC | Army Materiel Command | FEMA | |
| AMCCOM | Armament Munitions and Chemical Command | FEMA | |
| AMD | Acquisition Management Division | FEMA | |
| AMEAGS | Automated Major Emergency Action Guidelist System | FEMA | |
| AMF | Alternative Morgue Facility | FEMA | |
| AMGS | Air & Marine Group Supervisor | ICE | |
| AMHS | Automated Message Handling System | CISA | I&A | |
| AMID | Air and Marine Interdiction Division | USCG | |
| AMINESKAL | American Indian Eskimo Aleutian | FEMA | |
| AMIO | Alien Migrant Interdiction Operations | CBP | USCG | |
| AML | ARC Macro Language | FEMA | |
| AMO | Air and Marine Operations (ICE) | ICE | |
| AMOC | Air and Marine Operations Center | ICE | I&A | OPS | |
| AMP | Amperage | FEMA | |
| AMP | asbestos management plan | DHS | |
| AMPS | Automated Message Processing System | FEMA | |
| AMR | Agricultural Mitigation and Restoration | FEMA | |
| AMS | Aerial Measuring System | FEMA | |
| AMS | American Meteorological Society | FEMA | |
| AMS | Automated Manifest System | CBP | |
| AMS | Atmospheric Monitoring System | CISA | |
| AMSC | Area Maritime Security Committee | I&A | |
| AMSLAN | American Sign Language | FEMA | |
| AMSP | Area Maritime Security Plan | USCG | I&A | |
| AMT | Amount | FEMA | |
| AMTI | Applied Marine Technology, Inc. | USCG | |
| AMTOR | Amateur Telegraphy Over Radio | FEMA | |
| AMWA | Association of Metropolitan Water Agencies | FEMA | |
| AN | Above Normal | FEMA | |
| AN | Alert and Notification (see A/N) | FEMA | |
| ANACI | Access National Agency Check and Inquiry | MGMT | |
| ANAD | Anniston Army Depot | FEMA | |
| ANCA | Anniston Chemical Activity | FEMA | |
| ANCDF | Anniston Chemical Disposal Facility | FEMA | |
| ANFAZD | Academic Network for Foreign Animal and Zoonotic Disease | S&T | |
| ANFO | Ammonium Nitrate and Fuel Oil | FEMA | |
| ANG | Air National Guard | FEMA | USCG | |
| ANG | Army National Guard | FEMA | |
| ANGB | Air National Guard Base | FEMA | |
| ANI | American Nuclear Insurers | FEMA | |
| ANI | Area Not Included | FEMA | |
| ANL | Argonne National Laboratories | S&T | |
| ANOC | Association of National Olympic Committees | FEMA | |
| ANPR | Advance Notice of Proposed Rulemaking | FEMA | |
| ANPRM | Advance Notice of Proposed Rulemaking [see NPRM and SNPRM] | OGC | |
| ANPSC | Alternate National Processing Service Center | FEMA | |
| ANRC | American National Red Cross | FEMA | |
| ANS | Alert and Notification System | FEMA | |
| ANS | Answer | FEMA | |
| ANS | Aquatic Nuisance Species | USCG | S&T | |
| ANSER | Analytic Services Inc. | S&T | |
| ANSI | American National Standards Institute | MGMT | PLCY | |
| ANSI-HSSP | American National Standards Institute-Homeland Securities Standards Panel | FEMA | |
| ANZUS | Australia, New Zealand and United States | PLCY | |
| AO | Action Officer | FEMA | |
| AO | Administrative Officer | FEMA | |
| AO | Area of Operations | FEMA | |
| AO | Assistance Officer | FEMA | |
| AO | Accrediting Official | MGMT | |
| AO | Security Accrediting Official | MGMT | |
| AO | authorizing official [special access program] | MGMT | |
| AO | Designated Approving Authority | MGMT | |
| AOA | Administration on Aging | FEMA | |
| AOA | analysis of alternatives | S&T | |
| AOA | Aviation Operations Area | TSA | USCG | OPS | |
| AOAC | Association for Official Analytical Communities | S&T | |
| AOBD | Air Operations Branch Director | FEMA | |
| AOBS | Aerial Observer | FEMA | |
| AOC | Aircraft Operating Center (NOAA) | FEMA | |
| AOC | Area of Concern | FEMA | |
| AOC | Army Operations Center | FEMA | |
| AOIC | Acting Official in Charge | FEMA | |
| AOPA | Aircraft Owners and Pilots Association | S&T | CWMD | |
| AOR | Area of Responsibility | FEMA | |
| AOSSP | Aircraft Operator Standard Security Program | TSA | |
| AOV | Agency Owned Vehicle | FEMA | |
| AP | Aerial Port | FEMA | |
| AP | Alternative Power | FEMA | |
| AP | Arrival Point | FEMA | |
| AP | Assembly Point | FEMA | |
| AP | Associated Press | FEMA | OPA | |
| AP | anti-personnel improvised explosive device incident | S&T | |
| AP&CP | Arson Prevention and Control Plan | FEMA | |
| APA | Administrative Procedure Act | OGC | |
| APA | American Planning Association | FEMA | |
| APB | Acquisition Program Baseline | FEMA | |
| APC | Agency Program Coordinator | FEMA | |
| APCO | Association of Public Safety Communications [Worldwide] | TSA | |
| APE | Area of Potential Effect | FEMA | |
| APEC | Asia Pacific Economic Cooperation | USCG | |
| APERMANS | Automated Personnel Management System | FEMA | |
| APG | Aberdeen Proving Ground | FEMA | |
| APHA | American Public Health Association | FEMA | |
| APHIS | Animal and Plant Health Inspection Service | CBP | CISA | I&A | OPS | |
| APHL | Association of Public Health Laboratories | FEMA | |
| API | Application Programming Interface | FEMA | |
| APIS | Advance Passenger Information System | CBP | FEMA | TSA | S&T | OPS | PLCY | PRIV | |
| APL | Annex Planning Leaders | FEMA | |
| APLCN | Application | FEMA | |
| APLCT | Applicant | FEMA | |
| APLNC | Appliance | FEMA | |
| APMB | Acquisition and Program Management Branch (US-VISIT) | CISA | |
| APO | Accountable Property Officer | FEMA | |
| APOD | Aerial Port of Debarkation | FEMA | |
| APOE | Aerial Port of Embarkation | FEMA | |
| APP | Apparatus | FEMA | |
| APP | Applicant | FEMA | |
| APP | Application | FEMA | |
| APP | Application Portability Profile | FEMA | |
| APP | affirmative procurement program | DHS | |
| APPN | Appropriation | FEMA | |
| APPT | Appointment | FEMA | |
| APR | Agency Procurement Review | FEMA | |
| APR | Air-Purifying Respirator | FEMA | |
| APRSAC | Academe and Policy Research Advisory Committee | PLCY | |
| APSO | Asylum Pre-Screening Officer | USCIS | |
| APSP | Automated Passenger Screening Profile | TSA | |
| APSRS | Aerial Photography Summary Record System | FEMA | |
| APSS | Automated Personnel Security System | FEMA | |
| APT | Administrative Payment Team | FEMA | |
| APTA | American Public Transportation Associations | TSA | |
| APTS | Association of Public Television Stations | FEMA | OPA | |
| APTS | Airport, Port, and Terminal Security | PLCY | |
| APWA | American Public Works Association | FEMA | |
| AQI | Agricultural Quarantine Inspections | FEMA | |
| AR | Acknowledge Receipt | FEMA | |
| AR | Aerial Reconnaissance | FEMA | |
| AR | Army Regulation | FEMA | |
| ARA | Aircraft Rental Agreement | FEMA | |
| ARA | Analog Radio Adapter | FEMA | |
| ARAA | Advanced Radiological Accident Assessment | FEMA | |
| ARAC | Atmospheric Release Advisory Capability | CISA | S&T | |
| ARAR | applicable or relevant and appropriate requirement | DHS | |
| ARB | Air Reserve Base | FEMA | |
| ARB | Acquisition Review Board | MGMT | |
| ARC | American Red Cross (also RC) | DHS | |
| ARC | Analytic Resources Catalog | FEMA | |
| ARCA | Area Requiring Corrective Action | FEMA | |
| ARCHIE | Automated Resource for Chemical Hazard Incident Evaluation | FEMA | |
| ARD | Advanced Radiation Detection | CWMD | |
| AREAL | Atmospheric Research and Exposure Assessment Laboratory | FEMA | |
| AREP | Agency Representative | FEMA | |
| ARES | Amateur Radio Emergency Services | FEMA | |
| ARF | Action Request Form | FEMA | |
| ARF | Aviation Route Forecast | FEMA | |
| ARFCAM | Autonomous Rapid Facility Chemical Agent Monitor | S&T | |
| ARFF | Aircraft Rescue Firefighting | FEMA | |
| ARFI | Areas Recommended For Improvement | FEMA | |
| ARG | Accident Response Group | FEMA | |
| ARI | Acute Respiratory Infection | FEMA | |
| ARIES | Airborne Rapid Imagery for Emergency Support | FEMA | |
| ARIO | Advanced Radiation Incident Operations | FEMA | |
| ARIP | Accidental Release Information Program | FEMA | |
| ARJIS | Automated Regional Justice Information System | FEMA | |
| ARL | Activities Result List | FEMA | |
| ARL | Airborne Reconnaissance Low | FEMA | |
| ARL-M | Airborne Reconnaissance Low - Multifunction | FEMA | |
| ARM | Aerial Radiological Monitor | FEMA | |
| ARMS | Automated Resource Management System (FEMA) | FEMA | |
| ARNG | Army National Guard | FEMA | USCG | |
| ARNGOPS | Army National Guard Operations | FEMA | |
| ARO | asset retirement obligation | DHS | |
| A-ROC | Alternate Regional Operations Center | FEMA | |
| ARP | Alarm Resolution Protocols | TSA | |
| ARP | Administration and Resource Planning | FEMA | |
| ARPA | Advanced Research Projects Agency | FEMA | |
| ARPANET | Advanced Research Projects Agency Network | FEMA | |
| ARRA | American Recovery & Reinvestment Act | FEMA | |
| ARRAS | Automatic Residential Remote Alarm System | FEMA | |
| ARRL | American Radio Relay League | FEMA | |
| ARS | Automatic Route Selection | FEMA | |
| ARS | Agricultural Research Service | DHS | |
| ARSOF | Army Special Operations Forces | FEMA | |
| ARSR | Air Route Surveillance Radar | TSA | |
| ART | Awards Review Team | FEMA | |
| ARTCC | Air Route Traffic Control Center | FEMA | |
| ARTS | Audit Report Tracking System | FEMA | |
| ARWO | Aerial Reconnaissance Weather Office | FEMA | |
| AS | Applicant Services | FEMA | |
| AS | Automatic Sprinkler | FEMA | |
| AS 06 | Ardent Sentry 06 (exercise) | FEMA | |
| ASA | Average Speed of Answer | USCIS | |
| ASA/IL&E | Assistant Secretary of the Army (Installation, Logistics and Environment) | FEMA | |
| ASAC | Aviation Security Advisory Committee | TSA | |
| ASAP | Aerospace Safety Advisory Panel | FEMA | |
| ASAP | All-Hazards Situation Assessment Prototype | FEMA | |
| ASAP | As soon as possible | DHS | |
| ASAP | Automated Standard Application for Payments | FEMA | |
| ASC | Advanced Systems Center | FEMA | |
| ASC | Allowable Stack Concentration | FEMA | |
| ASC | Area of Special Consideration | FEMA | |
| ASC | Application Support Center | USCIS | PLCY | PRIV | |
| ASCADS | Automated Sorting, Conversion and Distribution System | FEMA | |
| ASCE | American Society of Civil Engineers | FEMA | |
| ASCII | American Standard Code for Information Interchange | FEMA | |
| ASCS | Agricultural Stabilization and Conservation Services | FEMA | |
| ASD | Acoustic Surveillance Device | FEMA | |
| ASD | Allowable Stress Design | FEMA | |
| ASD | Assistant Secretary of Defense | FEMA | |
| ASD | Administrative Security Division | MGMT | |
| ASD (HD) | Assistant Secretary of Defense, Homeland Defense | FEMA | |
| ASD (SO/LIC) | Assistant Secretary of Defense (Special Operations/Low-Intensity Conflict) | FEMA | |
| ASDAR | Aircraft to Satellite Data Relay | FEMA | |
| ASDRC | Automated Systems Disaster Recovery Capabilities | FEMA | |
| ASDSO | Association of State Dam Safety Officials | FEMA | |
| ASDWA | Association of State Drinking Water Administrators | FEMA | |
| ASEAN | Association of Southeast Asian Nations | PLCY | |
| ASFPM | Association of State Floodplain Managers | FEMA | |
| ASGS | Air Support Group Supervisor | FEMA | |
| ASH | Assistant Secretary for Health | FEMA | |
| ASHA | Assistant Secretary for Health Affairs | FEMA | |
| ASHG | Accident Site Health Group | FEMA | |
| ASHRAE | American Society of Heating, Refrigeration and Air-Conditioning Engineers | FEMA | |
| ASI | America's Shield Initiative | FEMA | |
| ASIA | Anti-smuggling Investigators Association | FEMA | |
| ASIA | Assistant Secretary for Information Analysis | FEMA | |
| ASIANPACI | Asian Pacific Islander | FEMA | |
| ASIP | Assistant Secretary for Infrastructure Protection | FEMA | |
| ASIS | American Society for Industrial Security | PLCY | |
| ASIWPCA | Association of State and Interstate Water Pollution Control Administrators | FEMA | |
| ASL | Above Sea Level | FEMA | |
| ASL | American Sign Language | FEMA | |
| ASLB | Atomic Safety and Licensing Board | FEMA | |
| ASM | Air Support Manager | FEMA | |
| ASME | American Society for Microbiology | S&T | |
| ASME | American Society of Mechanical Engineers | S&T | |
| ASMRO | Armed Services Medical Regulating Office | FEMA | |
| ASMT | Assessment | FEMA | |
| ASN | Abstract Syntax Notation | FEMA | |
| ASOS | Automated Surface Observing System | FEMA | |
| ASP | Aviation Security Program | TSA | |
| ASP | Active Server Page | FEMA | |
| ASP | Advanced Spectroscopic Portal | CBP | CWMD | |
| ASP | Associate Safety Professional | FEMA | |
| ASPA | Assistant Secretary of Public Affairs | FEMA | |
| ASPE | American Society of Professional Estimators | FEMA | |
| ASPECT | Airborne Spectral Photographic Environmental Collection Technology | FEMA | |
| ASPECT | Airborne Spectral Environmental Collection Technology | S&T | |
| ASPHEP | Assistant Secretary for Public Health Emergency Preparedness | FEMA | |
| ASPRS | American Society of Photogrammetry and Remote Sensing | FEMA | |
| ASR | Aquifer Storage Recovery | FEMA | |
| ASR | Atmosphere supplying respirator | FEMA | |
| ASR | Automatic Sprinkler Riser | FEMA | |
| ASSE | American Society of Safety Engineers | FEMA | |
| ASSET | Advanced Simulation and Software Engineering Technology | FEMA | |
| ASST | Assistant | FEMA | |
| ASSY | Assembly | FEMA | |
| AST | Aboveground Storage Tank | FEMA | |
| AST | Aviation Survival Technician | FEMA | |
| AST | Accessible Systems and Technologies | MGMT | |
| ASTA | American Society of Travel Agents | CBP | |
| ASTHO | Association of State and Territorial Health Officials | FEMA | |
| ASTI | Airport Security Technology Integration | TSA | |
| ASTM | American Society for Testing and Materials | S&T | |
| ASTS | Aeromedical Staging Squadron | FEMA | |
| ASU | All-Source Situational Understanding | FEMA | |
| ASUFAC | Airport and Seaport User Fee Advisory Committee, INS | CBP | |
| AT | Advanced Technology | FEMA | |
| AT | Anti-Terrorism | FEMA | |
| AT&L | Acquisition, Technology and Logistics | FEMA | |
| AT/FP | Anti-Terrorism & Force Protection | FEMA | |
| ATA | Airline Transportation Association | TSA | |
| ATA | Actual Time of Arrival | FEMA | |
| ATA | American Trucking Association | PLCY | |
| ATAC | Anti-Terrorism Advisory Council | I&A | |
| ATB | Applied Technology Board | TSA | |
| ATBM | Air Tanker Base Manager | FEMA | |
| ATC | Applied Technology Council | FEMA | |
| ATC | Air Traffic Control | CBP | TSA | CISA | |
| ATCET | Anti-Terrorism Combat Enforcement Team | CBP | |
| A-TCET | Anti-Terrorism Contraband Enforcement Team | FEMA | |
| ATCO | Air tanker Coordinator | FEMA | |
| ATCT | Air Traffic Control Tower | FEMA | |
| ATD | Actual Time of Departure | FEMA | |
| ATD | Advanced Technology Demonstration | CWMD | |
| ATD | Atmospheric Transport and Dispersion | FEMA | |
| ATDI | Advance Trade Data Initiative | CBP | |
| ATDP | Annual Training and Development Plan | FEMA | |
| ATDT | Atlantic Daylight Time (GMT - 3) | FEMA | |
| ATF | Alcohol, Tobacco, Firearms and Explosives [Bureau of] | DHS | |
| ATGS | Air Tactical Group Supervisor | FEMA | |
| ATH | Air-Transportable Hospital | FEMA | |
| ATIS | Alliance for Telecommunications Industry Solutions | CISA | |
| ATM | Asynchronous Transfer Mode | FEMA | |
| ATM | Automated Teller Machine | FEMA | |
| ATMU | Advanced Technology Meteorological Unit | FEMA | |
| ATMWU | Air Transportable Mobile Weather Unit | FEMA | |
| ATN | Aeronautical Telecommunications Networks | S&T | |
| ATO | Air Tasking Order | FEMA | |
| ATP | Air Transit Program | TSA | |
| ATP | Authority to Participate | FEMA | |
| ATR | Advanced Thermal Reactor | FEMA | |
| ATRAP | Air Transportable RADIAC Package | FEMA | |
| ATS | Automated Targeting System | CBP | PLCY | PRIV | |
| ATSA | Aviation and Transportation Security Act | TSA | CISA | I&A | |
| ATSDR | Agency for Toxic Substance and Disease Registry (USPHS) | CISA | S&T | |
| ATST | Atlantic Standard Time (GMT - 4) | FEMA | |
| ATT | Anti-Terrorism Technologies | FEMA | |
| ATTF | Antiterrorism Task Force | I&A | |
| ATTN | Attention | FEMA | |
| ATV | All-terrain vehicle | CBP | FEMA | |
| ATWC | Alaska Tsunami Warning Center (see WCATWC) | FEMA | |
| AUH | Attached Unit Housing | FEMA | |
| AUSA | Assistant United States Attorney | FEMA | |
| AUTHN | Authorization | FEMA | |
| AUTHY | Authority | FEMA | |
| AUTODIN | Automatic Digital Network | FEMA | |
| AUTOVON | Automatic Voice Network (see DSN) | FEMA | |
| AUVSI | Association for Unmanned Vehicle Systems International | CBP | |
| AV | Air Vehicle | FEMA | |
| AV | Audio-Visual | FEMA | |
| AVC | Alaska Volcano Center | FEMA | |
| AVHRR | Advanced Very High Resolution Radiometer | FEMA | |
| AVI | Audio-Visual Interleave | FEMA | |
| AVIC | Area Veterinarian in Charge | FEMA | |
| AVIP | Anthrax Vaccine Immunization Program | FEMA | |
| AVLIS | Atomic Vapor Laser Isotope Separation | FEMA | |
| AVMA | American Veterinary Medical Association | FEMA | |
| AVO | Alaska Volcano Observatory | FEMA | |
| AVOps | Aviation Operations | TSA | OPS | |
| AVSEC | Aviation Security | TSA | |
| AWACS | Airborne Warning and Control System | CBP | |
| AWBA | Average Weekly Benefit Amount | FEMA | |
| AWD | Available Without Declaration | FEMA | |
| AWIPS | Advanced Weather Interactive Processing System | FEMA | |
| AWIS | Automated Weather Information System | FEMA | |
| AWO | American Waterway Operators | USCG | |
| AWOL | Absent Without Leave | FEMA | |
| AWOP | Absence Without Pay | FEMA | |
| AWRA | American Water Resources Association | FEMA | |
| AWS | Alternate Work Schedule | FEMA | |
| AWS | alternative work schedule | MGMT | |
| AWWA | American Water Works Association | FEMA | |
| AYE | Alternate Year Exercise | FEMA | |
| B&SA | Bureau and Statistical Agent (NFIP) | FEMA | |
| B/C | Benefit/Cost | FEMA | |
| BAA | Broad Agency Announcement | FEMA | S&T | |
| BAA | Broad Area Announcement | FEMA | |
| BACM | Business Alliance for Customs Modernization | CBP | |
| BAER | Burned Area Emergency Rehabilitation (Team) | FEMA | |
| BAER | Burned Area Emergency Response | FEMA | |
| BALV | Best Available Lodging Value | FEMA | |
| BAND | Bio-agent Autonomous Networked Detectors | S&T | |
| BARDA | Biomedical Advanced Research & Development Authority | FEMA | |
| BAREPP | Bay Area Regional Earthquake Preparedness Project | FEMA | |
| BASIS | Biological Aerosol Sentry and Information System | S&T | |
| BATF | Bureau of Alcohol, Tobacco and Firearms | FEMA | |
| BATT | Battery | FEMA | |
| BAWS | Biological Aerosol Warning System | FEMA | |
| BBP | Blood Borne Pathogen | FEMA | |
| BBRS | Board of Building Regulations and Standards | FEMA | |
| BBS | Bulletin Board System | FEMA | |
| BC | Base Camp | FEMA | |
| BC | Branch Chief | FEMA | |
| BCA | Benefit-Cost Analysis | FEMA | |
| BCBP | Bureau of Customs and Border Protection | FEMA | |
| BCC | Border Crossing Card | CBP | PLCY | PRIV | |
| BCF | Billion Cubic Feet | FEMA | |
| BCIS | Bureau for Citizenship and Immigration Services (see USCIS) | FEMA | |
| BCMC | Board for the Coordination of Model Codes | FEMA | |
| BCMG | Base/Camp Manager | FEMA | |
| BCMR | Board of Correction of Military Records | USCG | OGC | |
| BCP | Business Continuity Planning | FEMA | |
| BCR | Benefit-Cost Ratio | FEMA | |
| BCR | Border Cargo Release | CBP | |
| BDA | Battle Damage Assessment | FEMA | |
| BDC | Bomb Data Center (FBI) | CISA | |
| BDE | Brigade | FEMA | |
| BDO | Battle Dress Overgarment | FEMA | |
| BDRP | Biological Defense Research Program | FEMA | |
| BDS | Biohazard Detection System | CISA | |
| BDU | Battle Dress Utility | FEMA | |
| BEA | Bureau of Economic Analysis | FEMA | |
| BEEF | Big Explosive Experimental Facility | FEMA | |
| BEIR | Biological Effects of Ionizing Radiation | FEMA | |
| BENS | Business Executives for National Security | PLCY | |
| BENT SPEAR | Nuclear Incident (codeword) | FEMA | |
| BEP | Budget Execution Plan | FEMA | |
| BERD | Blocked Erosion Rate Database | FEMA | |
| BERT | Building Emergency Response Team | CISA | |
| BEST | Bus Explosive Screening Technology | TSA | |
| BEST | Border Enforcement Security Taskforce | DHS | CBP | ICE | USCG | I&A | OPS | |
| BEST | Building Engagement, Strengths and Talent | FEMA | |
| BFA | Benefit Fraud Assessment | FEMA | |
| BFC | Bills for Collection | FEMA | |
| BFD | Base Flood Depth | FEMA | |
| BFE | Base Flood Elevation | FEMA | |
| BFM | Budget and Financial Management Branch (US-VISIT) | CISA | |
| BGAD | Blue Grass Army Depot | FEMA | |
| BGAN | Broadband Global Area Network | FEMA | |
| BGCA | Blue Grass Chemical Activity | FEMA | |
| BGP | Border Gateway Protocol | FEMA | |
| BHEF | Business-Higher Education Forum | S&T | |
| BHS | Bureau of Health Services | FEMA | |
| BI | Background Investigation | FEMA | |
| BIA | Bureau of Indian Affairs | CISA | CRCL | |
| BIA | Board of Immigration Appeals/Affairs (DOJ) | ICE | USCIS | |
| BICE | Bureau of Immigration and Customs Enforcement | FEMA | |
| BICEP | Basic Investigation of Computer and Electronic Crimes Program | FLETC | |
| BICEPP | Business and Industry Council for Emergency Preparedness and Planning | FEMA | |
| BIDS | Biological Integrated Detection System | FEMA | |
| BIFC | Boise Interagency Fire Center (see NIFC or NIFCC) | FEMA | |
| BIIDB | Badge Imaging Information Database | FEMA | |
| BIL | Band Interleaved by Line (Format) | FEMA | |
| BIO | Biological | FEMA | |
| BIO | biological improvised explosive device enhancement | S&T | |
| BISC | Border Interdiction Support Center | CBP | |
| BIT | Building Inventory Tool | FEMA | |
| BIT | Built-In Test | FEMA | |
| BIT | Business Intelligence Tool | MGMT | |
| BITE | Biometric Identification Technology Ethics | PRIV | |
| BIWG | Bilateral Interdiction Working Group | ICE | |
| BJA | Bureau of Justice Assistance (DOJ) | FEMA | |
| BKC | Biodefense Knowledge Center [Part of NBACC, National Biodefense Analysis and Countermeasures Center] | S&T | |
| BKR | Breaker | FEMA | |
| BL | Bill of Lading | FEMA | |
| BLESTP | Basic Law Enforcement Supervisor Training Program | FLETC | |
| BLEVE | Boiling Liquid Expanding Vapor Explosion | FEMA | |
| BLM | Bureau of Land Management | FEMA | |
| BLS | Bureau of Labor Statistics | MGMT | |
| BLS | Basic Life Support | FEMA | |
| BM | Bench Mark | FEMA | |
| BMBL | Biosafety in Microbiological and Biomedical Laboratories | S&T | |
| BMC | Bomb Management Center | FEMA | |
| BMD | Borders and Maritime Security Division (S&T/BMD) | DHS | |
| BMP | Best Management Practice | FEMA | |
| BMS | Building Management System | FEMA | |
| BN | Battalion | FEMA | |
| BNA | Baseline Needs Assessment | FEMA | |
| BNICE | Biological, Nuclear, Incendiary, Chemical, Explosive | CISA | S&T | |
| BNML | Battalion Military Liaison | FEMA | |
| BOC | Basic Operating Cost | FEMA | |
| BOCA | Building Officials and Code Administrators | FEMA | |
| BOD | Business Operations Services and Human Capital Division (S&T/BOD) | DHS | |
| BOE | basis of estimate | S&T | |
| BOL | Bureau of Labs | FEMA | |
| BOLO | Be On the Lookout alert | I&A | |
| BOM | Bill of Materials | FEMA | |
| BOO | Base of Operations | FEMA | |
| BOP | (Federal) Bureau of Prisons | FEMA | |
| BOR | Bureau of Reclamation | FEMA | |
| BORCAP | Border Patrol Criminal Alien Program | CBP | USCG | OPS | |
| BorderNet | (formerly BTSNet) | CBP | S&T | |
| BORP | Building Occupancy Resumption Program | FEMA | |
| BORSTAR | Border Patrol Search, Trauma and Rescue Team | CBP | USCG | |
| BORTAC | Border Patrol Tactical Unit | CBP | |
| BOV | Board of Visitors | FEMA | |
| BOXER | Bulk-Only X-ray Enhanced Region | TSA | |
| BPA | Border Patrol Agent | CBP | FEMA | OPS | |
| BPAT | Building Performance Assessment Team | FEMA | |
| BPD | Blast-Protective Design | FEMA | |
| BPM | Basic Property Management | FEMA | |
| BPML | Business Process Markup Language | FEMA | |
| BPN | Business Partner Network | FEMA | |
| BPO | Blanket Purchase Order | FEMA | |
| BPP | Business Policy and Planning Branch (US-VISIT) | CISA | |
| BPR | Business Process Reengineering | FEMA | |
| BPRP | Bioterrorism Preparedness and Response Program | FEMA | |
| BPS | Bits Per Second | FEMA | |
| BPSS | Business Process Specification Schema | FEMA | |
| BPWG | Best Practices Working Group | DHS | |
| BRAC | Base Realignment and Closure Act | MGMT | |
| BRASS | Border Release Advance Screening & Selectivity | CBP | |
| BRI | Building Related Illness | FEMA | |
| BRIDGES | Building Respect in Diverse Groups to Enhance Security | ICE | |
| BRM | Bio-Regulator/Modulator | FEMA | |
| BRM | Business Reference Model | I&A | MGMT | |
| BROKEN ARROW | Nuclear Accident (codeword) | FEMA | |
| BRT | Business Round Table | PLCY | |
| BSA | Business Software Alliance | DHS | |
| BSA | Base Support Area | FEMA | |
| BSAT | biological select agent and toxin | CWMD | |
| BSC | Biometrics Support Center | FEMA | CISA | |
| BSCO | Biosafety Coordinating Official | S&T | |
| BSD | Border Security Deployment | CBP | |
| BSE | Bovine Spongiform Encephalopathy (aka: “Mad Cow Disease”) | FEMA | |
| BSI | Basic Support Installation | FEMA | |
| BSI | Border Safety Initiative | CBP | |
| BSIR | Biannual Strategy Implementation Reports | FEMA | |
| BSL | biosafety level | CWMD | |
| BSO | Biosafety Officer | S&T | |
| BSOP | Battle Staff Operating Procedures | FEMA | |
| BSPP | Broadcast Station Protection Program | FEMA | |
| BSSC | Building Seismic Safety Council | FEMA | |
| BST | Border Support Team | CBP | |
| BST | Burn Specialty Team | FEMA | |
| BT | Bioterrorism | FEMA | |
| BT | Buying Team | FEMA | |
| BTA | Bioterrorism Act | CBP | |
| BTA | Border Trade Alliance | CBP | |
| BTCP | Biological Threat Characterization Program | S&T | |
| BTCP | Biological Terrorism Contingency Plan | CISA | S&T | |
| BTO | Business Transformation Office | FEMA | |
| BTS | Budget Tracking System | CISA | |
| BTS | Bureau of Transportation Statistics | TSA | |
| BTS | Border and Transportation Security (former DHS Directorate, contained CBP, ICE, TSA and FLETC) | FEMA | |
| BTU | British Thermal Unit | FEMA | |
| BTW | By the way | DHS | |
| BU | Building (Line) | FEMA | |
| BUMED | Bureau of Medicine | FEMA | |
| BUYL | Buying Team Leader | FEMA | |
| BUYM | Buying Team Member | FEMA | |
| BV | Butterfly Valve | FEMA | |
| BW | Biological Weapons | S&T | |
| BW | Biological Warfare | CISA | S&T | |
| BWIC | Biological Warning and Incident Characterization | FEMA | S&T | |
| BWR | Boiling Water Reactor | FEMA | |
| BY | Budget Year | FEMA | |
| BZ | Breathing Zone | FEMA | |
| BZPP | Buffer Zone Protection Plan | FEMA | |
| BZPP | Buffer Zone Protection Program | FEMA | CISA | |
| C Number | Crew number | FEMA | |
| C&A | certification and accreditation | MGMT | |
| C&C | Components and Cladding | FEMA | |
| C&D | Clean and Disinfect | FEMA | |
| C/A | Controller/Analyst | FEMA | |
| C/E | Communications/Electronics | DHS | |
| C2 | Command and Control | FEMA | |
| C3 | (ICE) Cyber Crimes Center | FEMA | |
| C3 | Command, Control, and Communications | FEMA | USCG | |
| C3 | Customs Cyber Smuggling Center | FEMA | |
| C3I | Command, Control, Communications, Information | FEMA | |
| C3ISR | Command, Control, Communications, Intelligence, Surveillance and Reconnaissance | FEMA | |
| C4 | Command, Control, Communications and Computers | FEMA | OPS | |
| C4ISR | C4+Intelligence, Surveillance and Reconnaissance | USCG | |
| CA | Chemical Agent | S&T | |
| CA | Capability Assurance | FEMA | |
| CA | Civil Affairs | FEMA | |
| CA | Congressional Affairs | FEMA | |
| CA | Cooperating Agency | FEMA | |
| CA | Cooperative Agreement | FEMA | |
| CA | compartmented area | MGMT | |
| CAA | Clean Air Act | FEMA | |
| CAAP | Critical Asset Assurance Program | FEMA | |
| CAARS | Cargo Advanced Automated Radiography System | CWMD | |
| CAB | Change Advisory Board | MGMT | |
| CABIN | Chemical and Biological Information Network | FEMA | |
| CAC | Citizens’ Advisory Commissions | FEMA | |
| CAC | Civil Applications Committee | FEMA | |
| CAC | Community Assistance Contact | FEMA | |
| CAC | Crisis Action Center | FEMA | |
| CAC | Common Access Card | PLCY | PRIV | |
| CACB | Camp Crew Boss | FEMA | |
| CACTIS | Computer-Assisted CSEPP Training Information System | FEMA | |
| CAD | Computer Aided/Assisted Dispatch | FEMA | |
| CAD | Computer-Aided/Assisted Design | FEMA | |
| CAD | Computer-Assisted Drafting | FEMA | |
| CADD | Computer-Assisted Drafting and Design | FEMA | |
| CADET | Computer-Assisted Design for Exercise Training | FEMA | |
| CADW | Civil Air Defense Warning | FEMA | |
| CAE | Command Assessment Element (for CBIRF) | FEMA | |
| CAE | Component Acquisition Executive | MGMT | |
| CAEM | Committee for Animal Emergency Management | FEMA | |
| CAEO | Competitive Analysis and Evaluation Office | FEMA | |
| CAER | Community Awareness and Emergency Response | FEMA | |
| CAF | Compressed Air Foam | FEMA | |
| CAF | Critical Asset Factor | FEMA | CISA | |
| CAG | Core Agency Group | FEMA | |
| CAI | Chemical Accident/Incident | FEMA | |
| CAI | Computer-Aided Instruction | FEMA | |
| CAIC | Chemical Accident/Incident Control | FEMA | |
| CAICO | Chemical Accident/Incident Control Officer | FEMA | |
| CAIRA | Chemical Accident/Incident Response and Assistance | FEMA | |
| CALM | Cognitive and Affective Learning Model | FEMA | |
| CAM | Chemical Agent Monitor | FEMA | S&T | |
| CAM | Computer-Aided Manufacturing | FEMA | |
| CAMDS | Chemical Agent Munition Disposal System | FEMA | |
| CAMEO | Computer-Aided Management of Emergency Operations | FEMA | |
| CAMEXPAN | Central America, Mexico, Panama | CBP | PLCY | |
| CAMPS | Civil Aircraft Missile Protection System | CISA | S&T | |
| CAMRA | Center for Advancing Microbiological Risk Assessment | S&T | |
| CAMS | Continuous Air Monitoring System | FEMA | |
| CAMU | Corrective Action Management Unit | DHS | |
| CAMU | Companion Animal Management Unit | FEMA | |
| CANAR | Consortia of Administrators for Native American Rehabilitators | FEMA | |
| CANDU | Canadian-Deuterium Uranium (Reactor) | FEMA | |
| CAO | Component Chief Administrative Officer | DHS | |
| CAO | Caribbean Area Office | FEMA | |
| CAO | Chief Administrative Officer | DHS | |
| CAP | 1Criminal Alien Program | FEMA | |
| CAP | Capability Assessment Program | FEMA | |
| CAP | Capability Assurance Program | FEMA | |
| CAP | Civil Air Patrol | CBP | FEMA | |
| CAP | Collection, Analysis and Planning | FEMA | |
| CAP | Combat Air Patrol | FEMA | |
| CAP | Common Alerting Protocol | FEMA | |
| CAP | Community Assistance Program | FEMA | |
| CAP | Contract Administration Plans | FEMA | |
| CAP | Corrective Action Program | FEMA | |
| CAP | Crisis Action Process | OPS | |
| CAPA | Coalition of Airline Pilots Association | TSA | |
| CAPC | Civil Aviation Planning Committee | FEMA | |
| CAPCO | Controlled Access Program Coordination Office | I&A | |
| CAP-FASSE | Corrective Action Program - Federal Agency Support Services Element | FEMA | |
| CAPM | Compliance Assurance Program Manager | CWMD | |
| CAPPS II | Computer Assisted Passenger Pre-screening System | TSA | PLCY | PRIV | |
| CAPR | Categorical Assistance Progress Reports | FEMA | |
| CAPRA | Critical Asset and Portfolio Risk Analysis | CISA | |
| CAPSS | Corrective Action Program Support System | FEMA | |
| CAP-SSSE | Corrective Action Program - State Support Services Element | FEMA | |
| CapWIN | Capital Wireless Integrated Network | FEMA | |
| CAR | Capability Assessment for Readiness | FEMA | |
| CAR | Congressional Affairs Representative | FEMA | |
| CARAT | Cooperation Afloat Readiness and Training | USCG | |
| CARCAH | Chief, Aerial Reconnaissance Coordination -All Hurricanes | FEMA | |
| CARD | Collaborative Agencies for Responding to Disasters | FEMA | |
| CARDA | Continental Airborne Reconnaissance for Damage Assessment | FEMA | |
| CARL | Computerized Activities Results List | FEMA | |
| CARRI | Community and Regional Resilience Initiative | S&T | |
| CART | Computer Analysis and Response Team | FEMA | |
| CART | County Animal Response Team | FEMA | |
| CARVER | Criticality, Accessibility, Recuperability, Vulnerability, Effect and Recognizability | CISA | |
| CAS | Chemical Abstract Service | FEMA | |
| CAS | Comprehensive Assessment System | FEMA | |
| CAS | Crisis Action System | FEMA | |
| CASC | Cache Supply Clerk | FEMA | |
| CASE | Computer Aided Software Engineering | I&A | MGMT | |
| CASPER | C-130 Airborne Sensor with Palletized Electronic Reconnaissance | USCG | |
| CASS | Cockpit Access Security System | TSA | |
| CAST | Commercial Aviation Safety Team | TSA | |
| CASU | Centralized Administrative Services Unit | FEMA | |
| CAT | Catalog | FEMA | |
| CAT | Collier Area Transit (Florida) | FEMA | |
| CAT | Catastrophic | FEMA | |
| CAT | Category | FEMA | |
| CAT | Crisis Action Team | FEMA | OPS | |
| CATEGORY A [PUBLIC ASSISTANCE] | Debris Removal | FEMA | |
| CATEGORY B [PUBLIC ASSISTANCE] | Emergency Protective Measures | FEMA | |
| CATEGORY C [PUBLIC ASSISTANCE] | Roads and Bridges | FEMA | |
| CATEGORY D [PUBLIC ASSISTANCE] | Water Control Facilities | FEMA | |
| CATEGORY E [PUBLIC ASSISTANCE] | Buildings and Contents | FEMA | |
| CATEGORY F [PUBLIC ASSISTANCE] | Utilities | FEMA | |
| CATEGORY G [PUBLIC ASSISTANCE] | Parks, Recreational, and Other | FEMA | |
| CATEX | Catastrophic Exercise | FEMA | |
| CATEX | Categorical Exclusion | FEMA | |
| CATF | Catastrophic Task Force | FEMA | |
| CATL | Chronology and Time Line | FEMA | |
| CATS | Consequences Assessment Tool Set | FEMA | |
| CAV | Community Assistance Visit | FEMA | |
| CAX | Capability Assurance Exercise | FEMA | |
| CAX | Computer-Assisted Exercise | FEMA | |
| CB | Chemical/Biological, (split) | FEMA | S&T | |
| CB | Citizens' Band | FEMA | S&T | |
| CB | Cluster Bomb | FEMA | S&T | |
| CBA | Cost Benefit Analysis | I&A | MGMT | |
| CBARS | Coastal Barrier Resources System | FEMA | |
| CBCF | Cross Border Crime Forum | CBP | |
| CBCT | Chemical/Biological Countermeasures Training | FEMA | |
| CBD | Chemical and Biological Defense | FEMA | |
| CBD | Chemical and Biological Division (S&T/CBD) | DHS | |
| CBDCOM | Chemical and Biological Defense Command (see SBCCOM) | FEMA | |
| CBEFF | Common Biometric Exchange Formats Framework | FEMA | |
| CBEK | Compendium of Basic Exercise Knowledge | FEMA | |
| CBEP | Career Builder Express Program | FEMA | |
| CBET | Computer Based Education and Training | FEMA | |
| CBI | Chandler Burning Index | FEMA | |
| CBI | Computer-Based Instruction | FEMA | |
| CBIA | Coastal Barrier Improvement Act | FEMA | |
| CBIAC | Chemical and Biological Information Analysis Center | FEMA | |
| CBIG | Caribbean Border Interagency Group | FEMA | |
| CBIRF | Chemical/Biological Incident Response Force (USMC) | FEMA | |
| CBL | Commercial Bill of Lading | FEMA | |
| CBL | Computer-Based Learning | FEMA | |
| CBN | Cooperative Base Network | FEMA | |
| CBN | Chemical, Biological, or Nuclear | FEMA | CISA | S&T | |
| CBO | Congressional Budget Office | USCIS | CISA | |
| CBO | Community-Based Organization | USCIS | CISA | OPS | |
| CBP | Customs and Border Protection, United States | DHS | |
| CBP | U.S. Customs and Border Protection | MGMT | |
| CBPMO | United States Customs and Border Protection Modernization Office | CBP | |
| CBPO | CBP Officer | FEMA | |
| CBQRF | Chemical-Biological Quick Response Force | FEMA | |
| CBR | Chemical, Biological and/or Radiological | CISA | S&T | |
| CBR&D | Chemical and Biological Research and Development Sector | TSA | |
| CBRA | Coastal Barrier Resources Act of 1982 (see COBRA) | FEMA | |
| CBRD | Chemical, Biological and Radiological Defense | FEMA | |
| CBRDEC | Chemical & Biological, Research, Development & Engineering Center | FEMA | |
| CBRDT | Chemical/Biological Rapid Deployment Team | FEMA | S&T | |
| CBRN | Chemical, Biological, Radiological, and Nuclear | FEMA | S&T | |
| CBRNE | Chemical, Biological, Radiological, Nuclear and Explosive | S&T | OPS | |
| CBRNE-CM | Chemical, Biological, Radiological, Nuclear, or High-Yield Explosive - Consequence Management | FEMA | |
| CBRRT | Chemical & Biological Rapid Response Team | FEMA | |
| CBRS | Coastal Barrier Resources System | FEMA | |
| CBRS | Concept Based Requirement System | FEMA | |
| CBRT | Chemical and Biological Response Team | FEMA | |
| CBRTA | Chemical, Biological and Radiological Technology Alliance | S&T | CWMD | |
| CBSA | Canada Border Security Agency | FEMA | |
| CBT | Chemical Biological Toxin | FEMA | |
| CBT | Computer-Based Training | FEMA | |
| CBW | Chemical and Biological Warfare | FEMA | |
| CC | Citizen Corps | FEMA | |
| CC | Congregate Care | FEMA | |
| CC | Coordination Center | FEMA | |
| CC | Courtesy Copy | FEMA | |
| CC | Crisis Counseling | FEMA | |
| cc | cubic centimeter | FEMA | |
| CC | Command Center | PLCY | |
| CCA | Circuit Card Assembly | FEMA | |
| CCA | Comprehensive Cooperative Agreement (see CA) | FEMA | |
| CCA | Continuity Communications Architecture | FEMA | |
| CCAM | Coordinating Council on Access and Mobility | FEMA | |
| CCAMS | Comprehensive Cooperative Agreement Monitoring System | FEMA | |
| CCAP | Child Citizenship Act Project | USCIS | |
| CCAT | Center for Commercialization of Advanced Technology | FEMA | |
| CCB | Configuration Control Board | FEMA | |
| CCC | Citizen Corps Council | FEMA | |
| CCC | Congregate Care Center | FEMA | |
| CCC | Crisis Coordination Center | FEMA | |
| CCD | Corporate Communications Division (S&T&CCD) | DHS | |
| CCD | Consular Consolidated Database | USCIS | I&A | PLCY | PRIV | |
| CCDB | Consolidated Counterdrug Data Base | ICE | |
| CCDPH | Cook County Department of Public Health | FEMA | |
| CCF | Coded Cities Forecast | FEMA | |
| CCFP | (National Institute of Justice) Center for Civil Force Protection | FEMA | |
| CCG | Crisis Coordination Group | FEMA | |
| CCI | Command, Control, and Interoperability | FEMA | |
| CCIO | Command and Control Incidents Operations | FEMA | |
| CCIR | Commander's Critical Information Report | FEMA | |
| CCITP | Counterterrorism Cyber-crime Investigations Training Program | FLETC | |
| CCITT | Consultative Committee for International Telephony and Telegraphy | FEMA | |
| CCL | Contamination Control Line | FEMA | |
| CCLS | Command Center Liaison Section | FEMA | |
| CCMIS | Crisis Consequence Management Information System | FEMA | |
| CCMRF | CBRNE Consequence Management Response Force | FEMA | |
| CCN | Canonical Correlation Analysis | FEMA | |
| CCND | Consultative Committee on Natural Disasters | FEMA | |
| CCO | Claims Coordinating Office | FEMA | |
| CCO | Consultation Coordination Officer | FEMA | |
| CCP | Casualty Collection Point | FEMA | |
| CCP | Crisis Counseling Program | FEMA | |
| CCP | Citizen Corps Program | FEMA | CISA | |
| CCRF | Commissioned Corps Readiness Force | FEMA | |
| CCS | Congregate Care System | FEMA | |
| CCS | Contamination Control Station | FEMA | |
| CCSL | Command and Control Simulation Lab | FEMA | |
| CCSO | Cook County Sheriff's Office | FEMA | |
| CCSO | Component Chief Security Officer | MGMT | |
| CCSP | Certified Cargo Screening Program | FEMA | |
| CCST | Chemical Casualty Site Team | FEMA | |
| CCT | Critical Care Transport | FEMA | |
| CCT | Communications Coordination Team | MGMT | |
| CCTV | Closed Circuit Television | FEMA | |
| CCU | Correspondence Control Unit | FEMA | |
| CCV | Characteristics and Common Vulnerabilities | FEMA | |
| CD | Civil Defense | FEMA | |
| CD | Code | FEMA | |
| CD | Compact Disc | FEMA | |
| CDBG | Community Development Block Grant | FEMA | |
| CDC | Centers for Disease Control and Prevention | DHS | |
| CDCP | Center for Disease Control and Prevention | FEMA | |
| CDD | Capability Development and Demonstration | FEMA | |
| CDD | Cross-Disaster Database | FEMA | |
| CDE | Committed Dose Equivalent | FEMA | |
| CDER | Computer Data Entry Recorder | FEMA | |
| CDERA | Caribbean Disaster Emergency Response Agency | FEMA | |
| CDEX | Civil Defense Exercise | FEMA | |
| CDL | Commercial Driver’s License | FEMA | |
| CDL | Community Disaster Loan | FEMA | |
| CDM | Content Design Manager | FEMA | |
| CDM | conceptual data model | MGMT | |
| CDMA | Code Division Multiple Access | FEMA | |
| CDO | Central Dense Overcast | FEMA | |
| CDP | Candidate Development Program | USCG | |
| CDP | Center for Domestic Preparedness | FEMA | |
| CDP | Chemical Demilitarization Program | FEMA | |
| CDR | Christian Disaster Response | FEMA | |
| CDR | Critical Design Review | FEMA | |
| CDR | Crude Death Rate | FEMA | |
| CDR | Commander | DHS | |
| CDRDB | Conventional Disaster Resource Database | FEMA | |
| CDRG | Catastrophic Disaster Response Group | FEMA | OPS | |
| CDRG-PAC | Catastrophic Disaster Response Group - Primary Agency Committee | FEMA | |
| CD-ROM | Compact Disk Read Only Memory | DHS | |
| CDRS | Call Detail Reporting System | FEMA | |
| CDS | Charge Data System | FEMA | |
| CDSO | Collateral Duty Safety Officer | FEMA | |
| CDSP | Cache Demobilization Specialist | FEMA | |
| CDT | Central Daylight Time (GMT - 5) | FEMA | |
| CDU | Contagious Disease Unit | FEMA | |
| CDV | Civil Defense Victoreen | FEMA | |
| CDX | Control and Direction Exercise | FEMA | |
| CE | Categorical Exclusion | FEMA | |
| CE | Civil Engineer | FEMA | |
| CE | continuous evaluation [security] | MGMT | |
| CEA | County Executives of America | FEMA | CISA | |
| CEA | cost-effectiveness analysis | PLCY | |
| CEA | Council of Economic Advisors | DHS | |
| CEB | Contractor Evaluation Board | FEMA | |
| CEC | Chief Exercise Controller | FEMA | |
| CED | Committee for Economic Development | FEMA | |
| CEDAP | Commercial Equipment Direct Assistance Program | FEMA | |
| CEDE | Committed Effective Dose Equivalent | FEMA | |
| CEE | Consolidated Enforcement Environment | MGMT | |
| CEEP | Critical Employee Emergency Planning | FEMA | |
| CEF | Cost Estimating Format | FEMA | |
| CEF | Critical Emergency File | FEMA | |
| CEG | Council for Excellence in Government | S&T | |
| CEI | Critical Elements of Information | FEMA | |
| CEM | Certified Emergency Manager | FEMA | |
| CEM | Comprehensive Emergency Management | FEMA | |
| CEMD | County Emergency Management Director | FEMA | |
| CEMIS | Crisis and Emergency Management Information System | FEMA | |
| CEMP | Comprehensive Emergency Management Plan | FEMA | |
| CEMS | Continuous Emission Monitoring System | FEMA | |
| CENL | Chemical Event Notification Level | FEMA | |
| CENR | Committee on Environment and Natural Resources | FEMA | |
| CEO | Chief Executive Officer | FEMA | |
| CEO | Community Education and Outreach | FEMA | |
| CEOC | County Emergency Operations Center | FEMA | |
| CEOS | Committee on Earth-Orbiting Satellites | FEMA | |
| CEP | Circular Error Probable | FEMA | |
| CEP | Civil Emergency Planning (NATO) | FEMA | |
| CEP | Civil Emergency Preparedness | FEMA | |
| CEPAP | Cost Estimating for the Public Assistance Program, Expert Panel on | FEMA | |
| CEPI | Catastrophic Emergency Preparedness Initiative | FEMA | |
| CEPPO | Chemical Emergency Preparedness and Prevention Office | FEMA | |
| CEQ | Council on Environmental Quality | FEMA | |
| CERC | Coastal Engineering Research Center | FEMA | |
| CERC | Crisis and Emergency Risk Communication | FEMA | |
| CERCLA | Comprehensive Environmental Response, Compensation, and Liability Act (aka: “Superfund”) | FEMA | |
| CERDEC | Communications-Electronics Research Development and Engineering Center | CWMD | |
| CERES | California Environmental Resources Evaluation System | FEMA | |
| CERT | Computer Evidence Recovery Training | USSS | |
| CERT | Community Emergency Response Team | FEMA | CISA | OPS | |
| CERT | Computer Emergency Recovery Team | FEMA | |
| CERT | Computer Evidence Response Training | FEMA | |
| CERT | Council of Energy Resource Tribes | FEMA | |
| CERT | Computer Emergency Readiness Team | CISA | S&T | |
| CERT/CC | Computer Emergency Response Team/Coordination Center | FEMA | |
| CEST | Cyber Emergency Support Team | FEMA | |
| CET | Contraband Enforcement Team | CBP | OPS | |
| CEU | Compliance Enforcement Unit | CBP | |
| CEU | Continuing Education Unit | FEMA | |
| CEXS | Cooperative Extension Service | FEMA | |
| CFA | Capability Focus Area | FEMA | |
| CFA | Cognizant Federal Agency | FEMA | |
| CFA | Computerized Fleet Analysis | FEMA | |
| CFAI | Commission on Fire Accreditation International | FEMA | |
| CFAO | Cognizant Federal Agency Official | FEMA | |
| CFATS | Chemical Facility Antiterrorism Standards | CISA | |
| CFBCI | Center for Faith Based and Community Initiatives (FEMA/CFBCI) | DHS | |
| CFC | Combined Federal Campaign | MGMT | |
| CFC-NCA | Combined Federal Campaign of the National Capital Area | FEMA | |
| CFDA | Catalog of Federal Domestic Assistance | MGMT | |
| CFGDP | Crash Feed Grain Donation Program | FEMA | |
| CFI | Credentialing Framework Initiative | PLCY | |
| CFIUS | Committee on Foreign Investment in the United States | CISA | I&A | OGC | PLCY | |
| CFIVSAC | Commercial Fishing Industry Vessel Safety Advisory Committee | USCG | |
| cfm | cubic feet per minute | FEMA | |
| CFO | Chief Financial Officer | DHS | |
| CFO | Chief of Field Operations | FEMA | |
| CFO Council | Chief Financial Officer’s Council | DHS | |
| CFR | Code of Federal Regulations | FEMA | OGC | |
| CFS | Certified Fraud Specialists, Association of | USSS | |
| cfs | Cubic Feet Per Second | FEMA | |
| CFSA | Consolidated Farm Service Agency | FEMA | |
| CFSI | Congressional Fire Services Institute | FEMA | |
| CFT | cross functional team | S&T | |
| CFTC | Commodity Futures Trading Commission | PLCY | |
| CG | Coast Guard (see USCG) | FEMA | |
| CG | Commanding General | FEMA | |
| CGD | Coast Guard District | FEMA | |
| CGFAA | Cerro Grande Fire Assistance Act | FEMA | |
| CGI | Common Gateway Interface | FEMA | |
| CGISS | Center for Geophysical Investigation of the Shallow Subsurface | FEMA | |
| CGM | Computer Graphics Metafile | FEMA | |
| CGS | Council of Graduate Schools | USCIS | S&T | |
| CH | Channel | FEMA | |
| CHARM | Complex Hazardous Release Model | FEMA | |
| CHAWS | Chemical Hazard Warning System | FEMA | |
| CHCO | Chief Human Capital Officer (MGMT/CHCO) | DHS | |
| CHDS | Center for Homeland Defense and Security | FEMA | |
| ChE | Cholinesterase | FEMA | |
| CHECK 21 | Check Clearing for the 21st Century Act | FEMA | |
| CHEMTREC | Chemical Transportation Emergency Center | FEMA | |
| CHERCAP | Comprehensive HAZMAT Emergency Response Capability Assessment Program | FEMA | |
| CHER-CAP | Community Hazards Emergency Response - Capability Assurance Process | FEMA | |
| CHIP | Capability and Hazard Identification Program | FEMA | |
| CHIP | Critical Homeland Infrastructure Protection | FEMA | |
| CHM | Chemistry of Hazardous Materials | FEMA | |
| CHPPM | Center for Health Promotion and Preventive Medicine (United States Army) | S&T | |
| CHRCL | Center for Human Rights and Constitutional Law | CRCL | |
| CHRIS | Chemical Hazard Response Information System | FEMA | |
| CHS | Correctional Health Services | FEMA | |
| CI | Critical Infrastructure | FEMA | |
| CI | counterintelligence | I&A | |
| CIA | Catastrophic Incident Annex | FEMA | |
| CIA | Central Intelligence Agency | DHS | |
| CIAD | Congressional and Intergovernmental Affairs Division | FEMA | |
| CIAETP | Criminal Investigation in Automated Equipment Training Program | FLETC | |
| CIAO | Chief Infrastructure Assurance Officer | FEMA | |
| CIAO | Critical Infrastructure Assurance Office | FEMA | CISA | I&A | |
| CIAO | Critical Infrastructure Assurance Officer | FEMA | |
| CICAD | Center for Intelligence Collection Analysis and Dissemination | FEMA | |
| CICC | DHS Counterintelligence Coordinating Council | I&A | |
| CICG | Critical Infrastructure Coordination Group | FEMA | |
| CID | Command, Control and Interoperability Division (S&T/CID) | DHS | |
| CID | Criminal Investigation Division or Department, (split) Community Identification | FEMA | USSS | |
| CIDCON | Civil Defense Condition | FEMA | |
| CIDER | Computer Interactive Display, Entry, and Retrieval | FEMA | |
| CIEE | Common Information Exchange Environment | FEMA | |
| CIF | Central Information File | FEMA | |
| CIF | Cost, Insurance, and Freight | FEMA | |
| CIG | Central Intelligence Group | FEMA | |
| CIH | Certified Industrial Hygienist | FEMA | |
| CII | Critical Infrastructure Information | CISA | |
| CIIA | Critical Infrastructure Information Act of 2002 | CISA | |
| CIID | Counterintelligence and Investigations Division (DHS) | FEMA | |
| CIII | Critical Infrastructure Interdependencies Integrator | CISA | |
| CIIMS | Critical Infrastructure Inspection Management System | S&T | |
| CIIP | Critical Infrastructure Information Protection Interagency Working Group | CISA | |
| CIIP IWG | Critical Information Infrastructure Protection Interagency Working Group | FEMA | |
| CIK | Crypto-Ignition Key | FEMA | |
| CIKR | Critical Infrastructure and Key Resources | CISA | I&A | |
| CIMA | Channel Industry Mutual Aid | FEMA | |
| CIMRT | Critical Incident Management Response Team | FEMA | |
| CIMS | Correspondence and Issues Management System | FEMA | |
| CIMS | Critical Incident Management Support | FEMA | |
| CIMS | Critical Infrastructure Modeling System | CISA | |
| CIMST | Critical Incident Management Support Team | FEMA | |
| CINC | Commander in Chief | FEMA | |
| CINCAMC | Commander-in-Chief, Air Mobility Command | FEMA | |
| CINCLANT | Commander-in-Chief, Atlantic Fleet | FEMA | |
| CINCNORAD | Commander-in-Chief, North American Aerospace Defense Command | FEMA | |
| CINCPAC | Commander-in-Chief, Pacific Command | FEMA | |
| CINCSOC | Commander-in-Chief, Special Operations Command | FEMA | |
| CINCTRANS | Commander-in-Chief, Transportation Command | FEMA | |
| CIND | Compact Integrated Narcotics Detector | USCG | |
| CINDI | Center for Integration of Natural Disaster Information | FEMA | |
| CINDI | Compact Integrated Narcotics Detector Instrument | FEMA | |
| CINS | Catastrophic Incident of National Significance | FEMA | |
| CINT | Chief Intelligence Officer | I&A | |
| CIO | Chief Information Officer | DHS | |
| CIP | Critical Infrastructure Protection | CISA | S&T | I&A | |
| CIP | Component Intelligence Program | I&A | |
| CIP | capital investment plan | MGMT | |
| CIP IWG | Critical Infrastructure Protection Interagency Working Group | FEMA | |
| CIPAC | Critical Infrastructure Partnership Advisory Council | S&T | I&A | |
| CIPB | Critical Infrastructure Protection Board | FEMA | |
| CIP-DSS | CIP-Decision Support System | FEMA | |
| CIPIC | Critical Infrastructure Protection Information Center | FEMA | |
| CIPP | Certified Information Privacy Professionals | CISA | PRIV | |
| CIPWG | Critical Infrastructure Protection Working Group | FEMA | |
| CIR | Critical Infrastructure Resiliency | FEMA | |
| CIRA | Catastrophic Incident Response Annex | FEMA | |
| CIRES | Catastrophic Incident Response Execution Schedule | FEMA | |
| CIRG | Critical Incident Response Group | FEMA | |
| CIRMS | Council of Ionizing Radiation Measurements and Standards | FEMA | |
| CIRP | Catastrophic Incident Response Plan | FEMA | PLCY | |
| CIS | Catastrophic Incident Supplement | FEMA | |
| CIS | Central Index System | CBP | USCIS | |
| CIS | Community Information System | FEMA | |
| CIS | Civil Infrastructure Security | CISA | S&T | |
| CIS | see USCIS for Citizenship and Immigration Services | USCIS | |
| CISA | Cybersecurity and Infrastructure Security Agency | CISA | |
| CISD | Critical Incident Stress Debriefing | FEMA | |
| CISM | Critical Incident Stress Management | FEMA | |
| CISMT | Critical Incident Stress Management Team | FEMA | |
| CISO | Chief Information Security Officer | I&A | MGMT | |
| CISOMB | Citizenship and Immigration Services Ombudsman | DHS | |
| CISSC | Central Information Systems Storage Center | FEMA | |
| CITAC | Computer Intrusion Threat Assessment Center | FEMA | |
| CITMO | Commercial Information Technology for Multinational Operations | S&T | |
| CITP | Criminal Investigator Training Program | FLETC | |
| CJCS | Chairman of the Joint Chiefs of Staff | FEMA | |
| CJIS | Criminal Justice Information Services | CBP | PLCY | PRIV | |
| CJTF | Commander, Joint Task Force | FEMA | |
| CK | Caulk | FEMA | |
| CLAIMS | Computer Linked Application Information Management System | USCIS | I&A | PLCY | PRIV | |
| CLASP | Consular Lost and Stolen Passport System | I&A | PLCY | PRIV | |
| CLASS | Consular Lookout and Support System | I&A | PLCY | PRIV | |
| CLDC | Connected Limited Device Configuration | FEMA | |
| CLIA | Civil Liberties Impact Assessment | CRCL | |
| CLMS | Claims Specialist | FEMA | |
| CLO | Chief Logistics Officer | FEMA | |
| CLO | Congressional Liaison Officer | FEMA | |
| CLOMA | Conditional Letter of Map Amendment | FEMA | |
| CLOMR | Conditional Letter of Map Revision | FEMA | |
| CLR | Common Language Runtime | FEMA | |
| CLS | Central Locator System | FEMA | |
| CM | Cadre Manager | FEMA | |
| cm | centimeter | FEMA | |
| CM | Chief of Mission | FEMA | |
| CM | Configuration Management | FEMA | |
| CM | Consequence Management | FEMA | |
| CM | Counter-Measure | FEMA | |
| CMA | Certified Medical Assistant | FEMA | |
| CMA | Chemical Manufacturers Association | FEMA | |
| CMA | Chemical Materials Agency | FEMA | |
| CMA | Community Map Action (Form) | FEMA | |
| CMAA | Customs Mutual Assistance Agreement | CBP | |
| C-MANPADS | Counter-Man-Portable-Air-Defense Systems | FEMA | |
| CMAS | Circular Map Accuracy Standard | FEMA | |
| CMAS | Commercial Mobile Alert System | FEMA | |
| CMAT | Consequence Management Advisory Team | FEMA | |
| CMC | Center for Marine Conservation | FEMA | |
| CMC | Crisis Management Center | FEMA | |
| CMC | Crisis Management Coordinator | FEMA | |
| CMC | Customs Management Centers | CBP | |
| CMCAC | Crisis Management Center Augmentation Cadre | FEMA | |
| CME | Chief Medical Examiner | FEMA | |
| CME | Continuing Medical Education | FEMA | |
| CMF | Case Management File | FEMA | |
| CMG | Consequence Management Group | FEMA | |
| CMHS | Center for Mental Health Services | FEMA | |
| CMIA | Cash Management Improvement Act | FEMA | |
| CMIR | Currency and Monetary Instruments Report | I&A | |
| CMIS | Corporate Management Information System | FEMA | |
| CML | Commercial | FEMA | |
| CMM | Capability Maturity Model | I&A | MGMT | |
| CMMI | Capability Maturity Model Integration | FEMA | |
| CMO | Civil Military Operations | FEMA | |
| CMO | Chief Medical Officer | CWMD | |
| CMOC | Civil Military Operations Center | FEMA | |
| CMRT | Consequence Management Response Team | FEMA | |
| CMS | Call Management System | FEMA | |
| CMS | Crisis Management System | FEMA | |
| CMS | Centers for Medicare and Medicaid Services | MGMT | |
| CMT | Crisis Management Team | FEMA | TSA | |
| CMTB | Countermeasures Test Bed | S&T | |
| CMU | Concrete Masonry Unit | FEMA | |
| CMU | Crisis Management Unit | FEMA | |
| CMV | Commercial Motor Vehicle | FEMA | |
| CMX | Crisis Management Exercise | FEMA | |
| CN | Communications Network | FEMA | |
| CNA | Certified Nursing Assistant | FEMA | |
| CNAC | Customs National Aviation Center | FEMA | |
| CNBC | Congress of National Black Churches | FEMA | |
| CNC | Central Network Control | FEMA | |
| CNC | Computer Numerical Control | FEMA | |
| CNCS | Corporation for National and Community Service | DHS | |
| CNDSP | Computer Network Defense Service Provider | FEMA | |
| CNE | Counternarcotics Enforcement, Office of (formerly CNO) | DHS | |
| CNGB | Chief of the National Guard Bureau | FEMA | |
| CNIES | Cooperating Nations Information Exchange System | DHS | CBP | USCG | OPS | |
| CNMI | Commonwealth of the Northern Mariana Islands | FEMA | |
| CNN | Cable News Network | FEMA | |
| CNO | Chief of Naval Operations | USCG | |
| CNO | Counter-Narcotics Office (see CNE) | FEMA | |
| CNO | Counternarcotics Officer | ICE | |
| CNPPD | Chemical & Nuclear Preparedness and Protection Division | FEMA | |
| CNR | Center for National Response, The | FEMA | |
| CNS | Central Nervous System | FEMA | |
| CNS | Corporation for National Security | DHS | |
| CNSC | Canadian Nuclear Safety Commission | DHS | |
| CNSIP | Classified National Security Information Program | MGMT | |
| CNSNS | Commission for Nuclear Safety and Safeguards | FEMA | |
| CNT | Counternarcoterrorism | ICE | |
| CNT | Crisis Negotiation Team | FEMA | |
| CNU | Crisis Negotiations Unit (FBI) | FEMA | |
| CNWDI | Critical Nuclear Weapons Design Information | FEMA | |
| CO | Commanding Officer | FEMA | |
| CO | Communications Officer | FEMA | |
| CO | Contracting Officer | FEMA | |
| CO | Custodial Officer | FEMA | |
| CO2 | Carbon Dioxide | FEMA | |
| COA | Course of Action | FEMA | |
| COAC | Customs Operations Advisory Committee | CBP | |
| COAD | Community Organizations Active In Disaster | FEMA | |
| COAP | Center for Ocean Analysis and Prediction | FEMA | |
| COB | Close of business | DHS | |
| COBOL | Common Business-Oriented Language | FEMA | |
| COBRA | Chemical, Ordnance, Biological, Radiological | FEMA | |
| COBRA | Coastal Barriers Resources Act | FEMA | |
| COBRE | Carry-On Bag Remote Examination | TSA | |
| COC | Combat Operations Center | FEMA | |
| COC | Country of Citizenship | CBP | ICE | |
| COCO | Computer Coordinator | FEMA | |
| COCOM | Combatant Command | FEMA | |
| COCOM | Coordinating Committee | FEMA | |
| COD | Cash on Delivery | FEMA | |
| CODEL | Congressional Delegation | TSA | |
| CODIS | Combined DNA Index System | I&A | PLCY | PRIV | |
| COE | US Army] Corps of Engineers (see USACE) | FEMA | |
| COE | Center of Excellence | S&T | MGMT | |
| COEM | Chicago Office of Emergency Management | FEMA | |
| COF | Construction of Facilities projects | FEMA | |
| COG | Continuity of Government | FEMA | |
| COG | Council of Governments | FEMA | |
| COGCON | Continuity of Government Readiness Conditions System | I&A | |
| COGO | Coordinate Geometry | FEMA | |
| COI | Community of Interest | DHS | |
| COI | Critical Operational Issue | FEMA | |
| COL | Colonel | FEMA | |
| COL | Cost of Living | FEMA | |
| COLA | Combined Operating License Application | FEMA | |
| COLA | Cost of Living Allowance | FEMA | |
| COLISEUM | Community On-Line Intelligence System for End Users and Managers | CISA | |
| COLT | Cellular on Light Truck | FEMA | |
| COM | Communications | FEMA | |
| COM | Component Object Model | FEMA | |
| COMC | Communications Coordinator | FEMA | |
| COMCDTF | Commander, Civil Disturbance Task Force | FEMA | |
| COMINT | Communications Intelligence | FEMA | |
| COML | Communications Unit Leader | FEMA | |
| COMM | Communications | FEMA | |
| COMMDIR | Communications Directory | FEMA | |
| CoMNET | Consequence Management News, Equipment and Training | FEMA | |
| COMP | Compensation/Claims Unit Leader | FEMA | |
| COMPUSEC | Computer Security | FEMA | |
| COMREL | Community Relations | FEMA | |
| COMSEC | Communications Security | I&A | MGMT | |
| COMSVC | Component Services (OHA/COMSVC) | DHS | |
| CONG | Congressional | FEMA | |
| CONGR | Congress | FEMA | |
| CONO | Contracting Officer | FEMA | |
| CONOPS | Concept of Operations | DHS | |
| CONOPS | Control Operations | FEMA | |
| CONPLAN | Concept of Operations Plan | FEMA | |
| CONPLAN | Contingency Plan | FEMA | |
| CONPLAN | United States Government Interagency Domestic Terrorism Concept of Operations Plan (see NRP) | FEMA | |
| CONUS | Contiguous United States | FEMA | |
| CONUS | Continental United States | FEMA | |
| CONUSA | Continental United States Army | FEMA | |
| COO | Chief Operating Officer | FEMA | |
| COO | continuity of operations | MGMT | |
| COOP | Continuity of Operations | FEMA | CISA | |
| COOP | Continuity of Operations Plan | MGMT | |
| COP | Chief of Party | FEMA | |
| COP | Chief of Police | FEMA | CISA | |
| COP | Committee of Principals | FEMA | |
| COP | Common Operating/Operational Picture | FEMA | |
| COP | Continuation of Pay | FEMA | |
| COP | community of practice | DHS | |
| COPS | Community Oriented Policing Service | FEMA | |
| COR | Central Office of Record | FEMA | |
| COR | Contracting Officers Representative | FEMA | |
| CORBA | Common Object Request Broker Architecture | FEMA | |
| C-ORD | commercialization operational requirements document | S&T | |
| CORE | Cadre of On-call Response Employees | FEMA | |
| CORE | Cadre of Response Employees | FEMA | MGMT | OPA | |
| CORE | Citizens of Oakland Respond to Emergencies | FEMA | |
| CORE | capabilities, objectives, resources and evaluation | MGMT | |
| CORS | Continuously Operating Reference Station | FEMA | |
| COS | Cash on Shipment | FEMA | |
| COS | Chief of Staff | DHS | |
| COSIN | Control Staff Instruction | FEMA | |
| COSMIC | Computer Software Management and Information Center (NASA) | FEMA | |
| COSO | Chief of Staff Office/Operations (former DHS Subcomponent) | DHS | |
| COSP (see PLCY) | Chief of Staff Office/Policy (former DHS Subcomponent) | DHS | |
| COST | Cost Unit Leader | FEMA | |
| COTHEN | Cellular Over the Horizon Enforcement Network | CBP | FEMA | |
| COTP | Captain of the Port | CBP | USCG | |
| COTR | Contracting Officer's Technical Representative | MGMT | |
| COTS | Commercial Off-the-shelf | DHS | |
| COUSCS | Commercial Operations of the United States Customs Svc, Advisory Committee on | CBP | |
| COW | Cellular on Wheels | FEMA | |
| CP | Command Post | FEMA | |
| CP | Control Point | FEMA | |
| CP | Coordination and Planning | FEMA | |
| CPA | Coalition Provisional Authority | PLCY | |
| CPAS | Cellular Priority Access System | FEMA | |
| CPAV | Community Program Assistance Visit | FEMA | |
| CPC | Country of Particular Concern | PLCY | |
| CPC | Commission on Professional Credentialing | FEMA | |
| CPD | Community Planning and Development | FEMA | |
| CPD | Community Preparedness Division | FEMA | |
| CPE | Contingency Planning Exchange | FEMA | |
| CPG | Civil Preparedness Guide | FEMA | |
| CPG | Comprehensive Preparedness Guides | FEMA | |
| CPHC | Central Pacific Hurricane Center | FEMA | |
| CPI | Consumer Price Index | FEMA | |
| CPI | critical program information | MGMT | |
| CPI | continuous process improvement | DHS | |
| CPIC | Capital Planning and Investment Control | I&A | MGMT | |
| cpm | characters per minute | FEMA | |
| cpm | counts per minute | FEMA | |
| CPMCC | Coalition Partner Mobile Command Center | FEMA | |
| CPO | Chief Procurement Officer | MGMT | |
| CPO | Central Processing Office | FEMA | |
| CPOT | Consolidated Priority Organization Target | ICE | |
| CPPA | Certified Professional Property Administrator | FEMA | |
| CPPM | Certified Professional Property Manager | FEMA | |
| CPPS | Certified Professional Property Specialist | FEMA | |
| CPR | Cardiopulmonary Resuscitation | FEMA | |
| CPRM | Checkpoint Resource Management | TSA | |
| CPS | Certified Public Secretary | FEMA | |
| CPSC | Consumer Product Safety Commission | FEMA | ICE | |
| CPSD | Contingency Planning and Support Division | FEMA | |
| CPSP | Comprehensive Passenger Screening Profile | TSA | |
| CPTED | Crime Prevention Through Environmental Design | FEMA | |
| CPU | Central Processing Unit | FEMA | |
| CPX | Command Post Exercise | FEMA | CISA | |
| CQA | Commandant's Quality Award | USCG | |
| CR | Civil Rights | FEMA | |
| CR | Claims Representative | FEMA | |
| CR | Community Relations | FEMA | |
| CR | Congressional Relations | FEMA | |
| CR | County Road | FEMA | |
| CR | continuing resolution | S&T | |
| CRA | certified release authority | I&A | |
| CRADA | Cooperative Research and Development Agreement | FLETC | |
| CRAF | Civil Reserve Air Fleet | FEMA | CISA | |
| CRAMP | Coral Reef Assessment and Monitoring Program | FEMA | |
| CRC | Contamination Reduction Corridor | FEMA | |
| CRC | Crisis Response Cell | FEMA | |
| CRC | Curriculum Review Conference | FLETC | |
| YES | Civil Rights and Civil Liberties, Office of | DHS | |
| CRCPD | Conference of Radiation Control Program Directors | FEMA | |
| CRDC | Cybersecurity Research & Development Center | S&T | |
| CRDF | United States Civilian Research & Development Foundation | S&T | |
| CRDS | Consolidated Remote Delivery Site | MGMT | |
| CREATE | Center for Risk and Economic Analysis of Terrorism Events | S&T | PLCY | |
| CREM | Classified Removable Electronic Media | FEMA | |
| CREP | Crew Representative | FEMA | |
| CREST | Contingency Real Estate Support Team | FEMA | |
| CREW | Cascadia Region Earthquake Workgroup | FEMA | |
| CRI | Cities Readiness Initiative | FEMA | CISA | |
| CRL | Certificate Revocation Lists | FEMA | |
| CRM | Crisis (or Communications) Resource Manager | FEMA | |
| CRM | Common Risk Model | CISA | |
| CRO | Community Reuse Organization | FEMA | |
| CRO | Congressional Relations Officer | FEMA | |
| CROP | Common Relevant Operational Picture | FEMA | |
| CROSS | Counterterrorism Reporting on Suspicious Surveillance | I&A | PLCY | PRIV | |
| CRP | Conservation Reserve Program | FEMA | |
| CRP | Critical Review Phase | FEMA | |
| CRR | Case Resolution Records | FEMA | |
| CRRDB | Comprehensive Reference Resource Database | FEMA | |
| CRREL | (United States Army) Cold Region Research and Engineering Laboratory | FEMA | |
| CRS | Catholic Relief Services | FEMA | |
| CRS | Community Rating System | FEMA | |
| CRS | Community Relations Service | FEMA | |
| CRS | Congressional Research Service | FEMA | |
| CRT | Cathode Ray Tube | FEMA | |
| CRTF | Commander, Response Task Force (DOD) | FEMA | |
| CRTF | Crisis Response Task Force | FEMA | |
| CRUD | Create, Retrieve, Update, Delete | FEMA | |
| CRWB | Crew Boss | FEMA | |
| CRWG | (Hurricane Katrina) Comprehensive Review Working Group | FEMA | |
| CRWG | Crisis Response Working Group | FEMA | |
| CRWRC | Christian Reformed World Relief Committee | FEMA | |
| CRYSYS | Cryospheric System | FEMA | |
| CRZ | Contamination Reduction Zone | FEMA | |
| CS | Chief of Staff | FEMA | |
| CS | Chief Scientist [NOAA] | FEMA | |
| CS | critical sensitive [position] | MGMT | |
| CS&C | Cyber Security and Communications, Office of (NPPD/CS&C) | DHS | |
| CS&T | Cyber Security and Telecommunication (see CS&C) | FEMA | |
| CS1M | Contracting Specialist, 1M | FEMA | |
| CS25 | Contracting Specialist, 25K | FEMA | |
| CSA | Chief of Staff, Army | FEMA | |
| CSA | Cognizant Security Authority | FEMA | |
| CSA | Community Services Administration | FEMA | |
| CSAC | Chemical Security Analysis Center | S&T | |
| CSAF | Chief of Staff, Air Force | FEMA | |
| CSB | United States Chemical Safety & Hazard Investigation Board | FEMA | |
| CSBG | Community Services Block Grant | FEMA | |
| CSD | Container Security Device | CBP | S&T | |
| CSDGM | Content Standard for Digital Geospatial Metadata | FEMA | |
| CSDP | Chemical Stockpile Disposal Program | FEMA | |
| CSE | Communications Security Establishment | FEMA | |
| CSEM | Center for the Study of Emergency Management | FEMA | |
| CSEPP | Chemical Stockpile Emergency Preparedness Program | FEMA | |
| CSG | Coordinating Sub-Group | FEMA | |
| CSG | Council of State Governments | FEMA | |
| CSG | Counterterrorism Security Group | FEMA | |
| CSH | Combat Support Hospital | FEMA | |
| CSHEMA | Campus Safety, Health & Environmental Management Associations | FEMA | |
| CSHIB | Chemical Safety and Hazards Investigation Board | FEMA | |
| CSHO | Compliance Safety and Health Officer- OSHA | FEMA | |
| CSI | Customer Satisfaction Index | TSA | |
| CSI | Container Security Initiative | CBP | TSA | |
| CSID | Call Subscriber ID | FEMA | |
| CSID | Centralized Scheduling and Information Desk | FEMA | |
| CSIL | Commercial Satellite Imagery Library | FEMA | |
| CSIRC | Computer Security Incident Response Center | FEMA | |
| CSIRT | Computer Security Incident Response Team | FEMA | |
| CSIS | Center for Strategic International Studies | DHS | |
| CSIS | Credited Structures Inventory System | FEMA | |
| CSIS | Canadian Security Intelligence Service | DHS | |
| CSM | Chemical Surety Material | FEMA | |
| CSMIP | California Strong-Motion Instrumentation Program | FEMA | |
| CSO | Chief Security Officer | MGMT | |
| CSO | Component Security Officer | MGMT | |
| CSP | Certified Safety Professional | FEMA | |
| CSPI | Critical Systems Protective Initiative | FEMA | USSS | |
| CSPO | Cargo Systems Program Office | CBP | |
| CSREES | Cooperative State Research Education and Extension Service | FEMA | |
| CSRS | Civil Service Retirement System | MGMT | |
| CST | Central Standard Time | FEMA | |
| CST | Civil Support Team (National Guard--for WMD) | FEMA | |
| CSTARC | Cyber Security Tracking, Analysis and Response Center | CISA | |
| CSTE | Council of State and Territorial Epidemiologists | FEMA | |
| CSU | Crime Scene Unit | USSS | |
| CSU | Clearing-Staging Unit | FEMA | |
| CSU | Customer Satisfaction Unit | CRCL | |
| CT | Counterterrorism | I&A | |
| CT/NP-ESG | Counterterrorism and National Preparedness Exercise Sub-Group | FEMA | |
| CTA | Combined Travel Authorization | FEMA | |
| CTAB | Counterterrorism Advisory Board | I&A | |
| CTAC | Chemical Transportation Advisory Committee | USCG | |
| C-TAP | Counter-Terrorism Airport Primacy | FEMA | |
| CTB | see CMTB | S&T | |
| CTBT | Comprehensive Nuclear Test Ban Treaty | FEMA | |
| CTC | Counterterrorism Center | I&A | |
| CTC | Conference and Training Center | FEMA | |
| CTCC | Counterproliferation Technology Coordinating Committee | FEMA | |
| CTD | Concept and Technology Development | FEMA | |
| CTD | Cumulative Trauma Disorder | FEMA | |
| CTD | Counterterrorist Division | DHS | |
| CTF | Combined Task Force | FEMA | |
| CTGP | Competitive Training Grant Program | FEMA | |
| CTI | Computer Telephony Integration | FEMA | |
| CTIA | Cellular Telecommunications & Internet Association | FEMA | |
| CTISS | Common Terrorism Information Sharing Standards | FEMA | |
| CTJTF | Counter-Terrorism Joint Task Force | FEMA | |
| CTOC | Containerized Tactical Operations Center | FEMA | |
| CTOEM | Connecticut Office of Emergency Management | FEMA | |
| CTOTF | Counter-Terrorism Operations Training Facility | FLETC | |
| CTP | Cooperating Technical Partners (Initiative) | FEMA | |
| C-TPAT | Customs-Trade Partnership Against Terrorism | CBP | |
| CTR | Crew Time Report | FEMA | |
| CTS | Carpal Tunnel Syndrome | FEMA | |
| CTS | Cooperating Technical State | FEMA | |
| CTSP | Computer Technical Specialist | FEMA | |
| CTTA | Certified TEMPEST Technical Authority | MGMT | |
| CTTP | Consolidated Trusted Traveler Program | CBP | TSA | PLCY | PRIV | |
| CTU | Chemistry/Toxicology Unit, | FEMA | |
| CTUIR | Confederated Tribes of the Umatilla Indian Reservation | FEMA | |
| cu | cubic | FEMA | |
| CUI | Controlled Unclassified Information | DHS | |
| CUI | controlled but unclassified information | MGMT | |
| CUL | Cost Unit Leader | FEMA | |
| CULS | Cultural Specialist | FEMA | |
| CUREE | Consortium of Universities for Research in Earthquake Engineering | FEMA | |
| CUSEC | Central United States Earthquake Consortium | FEMA | |
| CUSP | Central United States Partnership | FEMA | |
| CV | Combined Verification | FEMA | |
| CV | Curriculum Vitae | FEMA | |
| CVE | Common Vulnerabilities and Exposures | FEMA | |
| CVE | countering violent extremism | I&A | |
| CVI | Commercial Vehicle Inspection | FEMA | |
| CVO | Cascades Volcano Observatory | FEMA | |
| CVP | Citizenship Verification Procedures | FEMA | |
| CVS | Clearance Verification System | FEMA | |
| CVS | Combined Verification Section | FEMA | |
| CVVFA | Cumberland Valley Volunteer Firemen’s Association | FEMA | |
| CW | Chemical Warfare/Weapons | FEMA | |
| CW | Continuous Wave | FEMA | |
| CWA | Chemical Warfare Agent | S&T | |
| CWA | Clean Water Act | FEMA | |
| CWC | Chemical Weapons Convention | FEMA | |
| CWG | Concept Working Group | FEMA | |
| CWG | Continuity of Operations Working Group | FEMA | |
| CWIED | command wire improvised explosive device | S&T | |
| CWIN | Critical Infrastructure Warning Information Network | I&A | |
| CWIN | Cyberspace Warning Intelligence Network | FEMA | |
| CWMD | Countering Weapons of Mass Destruction | DHS | |
| CWN | Call When Needed | FEMA | |
| CWP | Center for Watershed Protection | FEMA | |
| CWS | Check Writing System | FEMA | |
| CWS | Church World Service | FEMA | |
| CWS | Compressed Work Schedule | FEMA | |
| CWSN | Cisco Works for Switched Networks | FEMA | |
| CWU | Church Women United | FEMA | |
| CY | Calendar Year | DHS | |
| cy | cubic yard | FEMA | |
| CZM | Coastal Zone Management | FEMA | |
| CZMA | Coastal Zone Management Act | FEMA | |
| D/A | Departments and Agencies | FEMA | |
| D2PC | An Army computer dispersion modeling capability | FEMA | |
| D2Puff | An Army computer dispersion modeling capability that can factor in terrain and wind changes | FEMA | |
| DA | Damage Assessment | FEMA | |
| DA | Declaration of Applicant | FEMA | |
| DA | Department of the Army | FEMA | |
| DA | Disaster Assistance (FEMA/DA) | DHS | |
| DA | District Attorney | FEMA | |
| DA PAM | Department of the Army Pamphlet | FEMA | |
| DAA | Designated Accrediting Authority | FEMA | |
| DAAC | Distributed Active Archive Center | FEMA | |
| DAAMS | Depot Area Air Monitoring System | FEMA | |
| DAAT | DHS Acronyms, Abbreviations, & Terms | DHS | |
| DAC | Defense Ammunition Center | FEMA | |
| DAC | Direct Air Carrier | FEMA | |
| DAC | Disaster Assistance Center (or Direct Air Carrier) | FEMA | |
| DACA | Deferred Action for Childhood Arrivals | USCIS | |
| DACS | Deportable Alien Control System | ICE | PLCY | PRIV | |
| DAD | Deputy Assistant Director | FEMA | |
| DAE | Disaster Assistance Employee [aka: "SAE"] | FEMA | MGMT | OPA | |
| DAEO | Designated Agency Ethics Official | OGC | |
| DAGC | Deputy Associate General Counsel | OGC | |
| DAIP | Disaster Assistance Improvement Program | FEMA | |
| DALIS | Disaster Assistance Logistics Information System | FEMA | |
| DALO | Disaster Area Liaison Officer | FEMA | |
| DAM | Digital Asset Management | I&A | MGMT | |
| DAMAGES | Disaster Accountability Management System | FEMA | |
| DAN | Document Accountability Number | FEMA | |
| DAO | Defense Attache Office | I&A | |
| DAP | Disaster Assistance Program | FEMA | |
| DAR | Designated Agency Representative | FEMA | |
| DARAC | Direct Assistance Replacement Assistance Consideration | FEMA | |
| DARCOM | Development And Readiness Command | FEMA | |
| DARIS | Disaster Automated Reporting and Information System | FEMA | |
| DARO | Defense Airborne Reconnaissance Office | FEMA | |
| DARP | data access request process | MGMT | |
| DARPA | Defense Advance Research Projects Agency | CISA | S&T | |
| DART | Disaster Assistance and Response Team | USCG | |
| DART | Daily Advisories/Risk and Threat | FEMA | |
| DART | Damage Assessment Reconnaissance Team | FEMA | |
| DART | DHS Accessibility Requirements Tool | FEMA | |
| DART | Disaster Assessment and Recovery Team | FEMA | |
| DART | Disaster Assessment and Response Team | FEMA | |
| DASA(ECW) | Deputy Assistant Secretary of the Army for the Elimination of Chemical Weapons | FEMA | |
| DASC | Disaster Assistance Support Center | FEMA | |
| DASH | Deputy Assistant Secretary for Health | FEMA | |
| DASHO | Designated Agency Safety and Health Official | FEMA | |
| DASP | Disaster Assistance Support Program | FEMA | |
| DAST | Disaster Assessment Survey Team | FEMA | |
| DAT | Digital Audio Tape | FEMA | |
| DAWG | Disaster Attache Working Group | PLCY | |
| DAWIA | Defense Acquisition Workforce Improvement Act | FEMA | |
| DB | Database | FEMA | |
| dB | decibel | FEMA | |
| dB(A/B/C) | Indicating The Method Used to Weight Sound Frequencies When Measuring Sound Pressure Levels | FEMA | |
| DBA | Database Administrator | FEMA | |
| DBA | Design Basis Accident | FEMA | |
| DBMS | Database Management System | I&A | MGMT | |
| DBT | design-basis threat | MGMT | |
| DC | Dangerous Contact | FEMA | |
| DC | Direct Current | FEMA | |
| DC | Dislocated Civilians | FEMA | |
| DC | District of Columbia | FEMA | |
| DC | Dry Chemical | FEMA | |
| DC | direct current | S&T | |
| DCA | Defense Communications Agency | FEMA | CISA | |
| DCA | Disaster Communication Agreement | FEMA | OPA | |
| DCAA | Defense Contract Audit Agency | S&T | |
| DCAC | Demilitarization Chemical Agent Concentrator | FEMA | |
| DCAS | Document Control and Accountability System | FEMA | |
| DCBP | Double Check Backflow Preventer | FEMA | |
| DCC | Document Control Center | FEMA | |
| DCC | Donation Coordination Center | FEMA | |
| DCCC | Defense Collection Coordination Center | FEMA | |
| DCD | Deseret Chemical Depot | FEMA | |
| DCE | Defense Coordinating Element | FEMA | |
| DCE | Disaster Communications Equipment | FEMA | OPA | |
| DCE/MED TF | Disaster Coordinating Element/ Medical Task Force | FEMA | |
| DCEMA | District of Columbia Emergency Management Agency | FEMA | |
| DCFO | Deputy Chief Financial Officer | FEMA | |
| DCFSA | Dependent Care Flexible Spending Account | FEMA | |
| DCG | Disaster Control Group | FEMA | |
| DCHD | DuPage County Health Department | FEMA | |
| DCI | Director of Central Intelligence | DHS | I&A | |
| DCID | Director of Central Intelligence Directive | FEMA | |
| DCIS | Defense Criminal Investigative Service | DHS | |
| DCIX | DHS Counterintelligence Executive | I&A | |
| DCLN | Declaration | FEMA | |
| DCLO | Deputy Congressional Liaison Officer | FEMA | |
| DCM | Deputy Chief of Mission | FEMA | |
| DCMI | Dublin Core Metadata Initiative | MGMT | |
| DCN | Disaster Contractors Network | FEMA | |
| DCN | Document Control Number | FEMA | |
| DCO | Defense Coordinating Officer | FEMA | |
| DCO | Disaster Coordinating Office | FEMA | |
| DCP | Development Concept Plan | FEMA | |
| DCPA | Defense Civil Preparedness Agency | FEMA | |
| DCPDS | Defense Civilian Personnel Data System | FEMA | |
| DCPS | Digital Cartographic Production System | FEMA | |
| DCS | Digital Control System | S&T | |
| DCS | Data Collection System | FEMA | |
| DCS | Defense Communications System | FEMA | |
| DCS | Defense Courier Service | FEMA | |
| DCS | Deputy Chief of Staff | FEMA | |
| DCT | Data Collection Tool | FEMA | |
| DCT | Donations Coordination Team | FEMA | |
| DCV | Detector Check Valve | FEMA | |
| DCWDB | Direction, Control and Warning Database | FEMA | |
| DCX | Direction and Control Exercise | FEMA | |
| DD | Damaged Dwelling | FEMA | |
| DD | Defensive Driving | FEMA | |
| DD | Direct Dial | FEMA | |
| DD | Dynamic Data | FEMA | |
| DDD | Direct Distance Dialing | FEMA | |
| DDE | Dynamic Data Exchange | FEMA | |
| DDL | Data Definition Language | FEMA | |
| DDO | Deputy Director of Operations | FEMA | |
| DDOS | Distributed Denial of Service | USSS | |
| DDP | Data-Derived Product | FEMA | |
| DDRM | Deputy Disaster Recovery Manager | FEMA | |
| DEA | Data Exchange Agreement | FEMA | |
| DEA | Drug Enforcement Administration | DHS | |
| DEAC | Deemed Export Advisory Council | PLCY | |
| DEAS | Digital Emergency Alert System | FEMA | |
| DEASTP | Digital Evidence Acquisition Specialist Training Program | FLETC | |
| DEC | DCI Environmental Center | FEMA | |
| DEC | Director’s Executive Council | FEMA | |
| DEC | Disaster Emergency Communications | FEMA | |
| DEC | Disasters Emergency Committee | FEMA | |
| DECD | Department of Economic and Community Development | FEMA | |
| DECK | Deck Coordinator | FEMA | |
| DECON | Decontamination | FEMA | |
| DED | Department of Education | FEMA | |
| DEE | Department Environmental Executive (DHS) | FEMA | |
| DEEDS | Data Elements for Emergency Department Systems (CDC) | FEMA | |
| DEERS | Defense Eligibility Enrollment Reporting System | FEMA | |
| DEFCON | Defense Condition | FEMA | |
| deg | degree | FEMA | |
| DEI | Dose Equivalent Iodine | FEMA | |
| DELO | Deputy Environmental Liaison Officer | FEMA | |
| DEM | Department of Environmental Management | FEMA | |
| DEM | Digital Elevation Model | FEMA | |
| DEM | Division of Emergency Management | FEMA | |
| DEMA | Department of Energy and Military Affairs | FEMA | |
| DEMS | Domestic Emergency Management System | FEMA | |
| DEN | Domestic Events Network | FEMA | |
| DEO | Detention Enforcement Officer | ICE | |
| DEP | Department of Environmental Protection | FEMA | |
| DEP | Domestic Emergency Preparedness | FEMA | |
| DEPER | Deployed Personnel Report | FEMA | |
| DEPS | Domestic Emergency Planning System | FEMA | |
| DEPSEC | Deputy Secretary | FEMA | |
| DEPSECDEF | Deputy Secretary of Defense | FEMA | |
| DEQ | Department of Environmental Quality | FEMA | |
| DERC | Damage Estimates, Ranges and Casualties | FEMA | |
| DERF | Defense Emergency Response Fund | FEMA | |
| DERIS | Domestic Emergency Response Information Services | FEMA | |
| DES | Data Encryption Standard | FEMA | |
| DES | Disaster Emergency Services | FEMA | |
| DES | Division of Emergency Services | FEMA | |
| DESCOM | Depot System Command | FEMA | |
| DEST | Domestic Emergency Support Team | FEMA | |
| DETER | Defense Technology Experimental Research | S&T | |
| DEW | Distant Early Warning | FEMA | |
| DFA | Direct Federal Assistance | FEMA | |
| DFAA | Delegation of Financial Assistance Authority | MGMT | |
| DFAIT | Department of Foreign Affairs and International Trade | PLCY | |
| DFAS | Defense Financial Accounting Service | ICE | |
| DFCO | Deputy Federal Coordinating Officer | FEMA | |
| DFIRM | Digital Flood Insurance Rate Map | FEMA | |
| DFIRM-DLG | Digital Flood Insurance Rate Map - Digital Line Graph | FEMA | |
| DFO | Designated Federal Official | FEMA | CISA | |
| DFO | Disaster Field Office | FEMA | |
| DFOM | Disaster Field Operations Management | FEMA | |
| DFOMC | Disaster Field Operations Management Course | FEMA | |
| DFRN | Disaster Federal Register Notice | FEMA | |
| DFSG | Disaster Financial Services Group | FEMA | |
| DFSR | Disaster Financial Status Report | FEMA | |
| DFTO | Disaster Field Training Office | FEMA | |
| DFTO | Disaster Field Training Organization | FEMA | |
| DG/CS | Dangerous Goods/Cargo Security | CBP | TSA | |
| DGCO | Deputy Grant Coordinating Officer | FEMA | |
| DGN | Design (File) | FEMA | |
| DGPS | Differential Global Positioning System | FEMA | |
| DGSA | DOD Goal Security Architecture | FEMA | |
| DGZ | Desired Ground Zero | FEMA | |
| DH | Disaster Housing | FEMA | |
| DHA | Disaster Housing Assistance | FEMA | |
| DHAP | Disaster Housing Assistance Program | FEMA | |
| DHC | Disaster Housing Checkwriter | FEMA | |
| DHCD | Department of Housing and Community Development | FEMA | |
| DHelp | Disaster Help Web Site | FEMA | |
| DHF | Dengue Hemorrhagic Fever | FEMA | |
| DHHS | Department of Health and Human Services | FEMA | |
| DHO | Disaster Housing Officer (replaced by IA Program/HA Manager) | FEMA | |
| DHP | Disaster Housing Program (replaced by IHP/HA) | FEMA | |
| DHS | Disaster Health Service | FEMA | |
| DHS | U.S. Department of Homeland Security | DHS | |
| DHS CAT | DHS Crisis Action Team | I&A | |
| DHS-IE | Department of Homeland Security Intelligence Enterprise | I&A | |
| DHS-ISE | DHS Information Sharing Environment | MGMT | |
| DHUD | Department of Housing and Urban Development (also HUD) | FEMA | |
| DIA | Defense Intelligence Agency | CISA | I&A | |
| DIAC | Defense Intelligence & Analysis Center | I&A | |
| DIAO | Deputy Individual Assistance Officer | FEMA | |
| DIB | Defense Industrial Base | CISA | |
| DIC | Deputy Incident Commander | FEMA | |
| DICE | DEA Internet Connectivity Endeavor | I&A | |
| DID | Direct Inward Dial | FEMA | |
| DIDA | Detection, Identification, and Assessment | FEMA | |
| DIDS | Decision Information Distribution System | FEMA | |
| DIFAX | Digital Facsimile | FEMA | |
| DIHS | Division of Immigration Health Services | USCIS | |
| DII | Defense Information Infrastructure | FEMA | |
| DIL | Derived Intervention Level | FEMA | |
| DIMC | Digital Identity Management Center | ICE | |
| DIMHRS | Defense Integrated Military Human Resources System | FEMA | |
| DIMO | Defense Institute of Medical Operations | FEMA | |
| DIMOS | Drug Intelligence Method of Operation System | ICE | |
| DIR | Director | FEMA | |
| DIR | Domestic Imagery Requirement | FEMA | |
| DIRC | Disaster Information Resource Center | FEMA | |
| DIRNSA | Director, National Security Agency | FEMA | |
| DIS | Defense Investigative Service | FEMA | |
| DIS | Distributed Interactive Simulation | FEMA | |
| DIS | digital imaging system | MGMT | |
| DISA | Defense Information Systems Agency | CISA | |
| DISC | Disaster Information System Clearinghouse | FEMA | |
| DISCO | Defense Industrial Security Clearance Office | FEMA | |
| DISCO | Defense Industrial Security Clearance Officer | FEMA | |
| DISN | Defense Information System Network | FEMA | |
| Disposition PTA | disposition privacy threshold analysis | I&A | |
| DISUM | Daily Intelligence Summary | FEMA | |
| DISUM | Disaster Summary | FEMA | |
| DIVS | Division/Group Supervisor | FEMA | |
| DLA | Defense Logistics Agency | FEMA | CISA | |
| DLG | Digital Line Graph | FEMA | |
| DLG-3 | Digital Line Graph Level 3 | FEMA | |
| DLL | Dynamic-Link Library | FEMA | |
| DLS | Disaster Legal Services | FEMA | |
| DLSGP | Driver's License Security Grant Program | FEMA | |
| DLT | Department Leadership Team | FEMA | |
| DM | Dimension | FEMA | |
| DM | Disaster Management | FEMA | CISA | |
| DMA | Defense Mapping Agency | FEMA | |
| DMA | Designated Market Area | FEMA | |
| DMA | Disaster Mitigation Act | FEMA | |
| DMA | Disaster Mitigation Act of 2000 (also called DMA 2000 or DMA2K) | FEMA | |
| DMAC | Disaster Management Advisory Committee | FEMA | |
| DMAG | Deputy’s Management Action Group | MGMT | |
| DMAT | Disaster Medical Assistance Team | FEMA | OPS | |
| DMDC | Defense Manpower Data Center | FEMA | |
| DMH | Department of Mental Health | FEMA | |
| DMH | Disaster Mental Health | FEMA | |
| DMHT | Disaster Mental Health Team | FEMA | |
| DMI | Disaster Management Interoperability | FEMA | |
| DMIATF | Data Management Improvement Act Task Force, INS | DHS | |
| DMIS | Disaster Management Interoperability Services | S&T | |
| DMI-Services (or DMIS) | Disaster Management Interoperability Services | FEMA | |
| DMOB | Demobilization Unit Leader | FEMA | |
| DMORT | Disaster Mortuary Operational Response Team | FEMA | OPS | |
| DMRIS | Defense Medical Regulating Information System | FEMA | |
| DMRS | Data Management and Retrieval System | FEMA | |
| DMS | Dispatch Messaging System | FEMA | |
| DMS | Document Management System | FEMA | |
| DMSS | Defense Medical Surveillance System | FEMA | |
| DMV | Department of Motor Vehicles | FEMA | |
| DNA | Defense Nuclear Agency | FEMA | |
| DNA | Deoxyribonucleic acid | FEMA | S&T | |
| DNAT | Defense Nuclear Advisory Team | FEMA | |
| DND | Department of National Defense | FEMA | |
| DNDO | Domestic Nuclear Detection Office (see CWMD) | DHS | |
| DNF | Did Not Finish | FEMA | |
| DNFSB | Defense Nuclear Facilities Safety Board | FEMA | |
| DNI | Director of National Intelligence | DHS | |
| DNR | Department of Natural Resources | FEMA | |
| DNS | Department of Nuclear Safety | FEMA | |
| DNS | Domain Name Server | FEMA | |
| DNSSEC | Domain Name System Security Extensions | FEMA | |
| DO | Designated Official (OEP) | FEMA | |
| DO | Digital Orthophoto | FEMA | |
| DO | Director of Operations | FEMA | |
| DO | Disaster Operations (FEMA/DO) | DHS | |
| DOA | Dead On Arrival | FEMA | |
| DOA | Department of Agriculture | FEMA | |
| DOB | Date of Birth | FEMA | |
| DOB | Duplication of Benefits | FEMA | |
| DOC | Department Operations Center | FEMA | |
| DOC | Discrete Organic Chemicals | FEMA | |
| DOC | Department of Corrections | ICE | |
| DOC | Department of Conservation | FEMA | |
| DOC | United States Department of Commerce | DHS | |
| DOCL | Documentation Unit Leader | FEMA | |
| DOD | United States Department of Defense | DHS | |
| DODD | Department of Defense Directive | DHS | |
| DODESB | Department of Defense Explosive Safety Board | FEMA | |
| DODMS | DOD Discovery Metadata Standard | FEMA | |
| DODRDB | Department of Defense Resource Database | DHS | |
| DOE | United States Department of Energy | DHS | |
| DOEd | United States Department of Education (see ED) | FEMA | |
| DOG | Deployable Operations Group | FEMA | USCG | |
| DOH | Department of Health | FEMA | |
| DOI | Innovation/HSARPA Division (S&T/DOI) | DHS | |
| DOI | United States Department of the Interior | DHS | |
| DOIM | Director of Information Management | FEMA | |
| DOJ | United States Department of Justice | DHS | |
| DOL | United States Department of Labor | DHS | |
| DOLP | Disaster Operations Leadership Program | FEMA | |
| DOM | Disaster Operations Manual | FEMA | |
| DOMO | Domestic Operations (USCIS/DOMO) | DHS | |
| DOMS | Director of Military Support | FEMA | |
| DON | Donation | FEMA | |
| DONAT | Donation | FEMA | |
| DOQ | Digital Orthophoto Quadrangle | FEMA | |
| DOR | Research Division (S&T/DOR) | DHS | |
| DOS | Disk Operating System | FEMA | |
| DOS | United States Department of State | DHS | |
| DOT | Transition Division (S&T/DOT) | DHS | |
| DOT | United States Department of Transportation | DHS | |
| DOZB | Dozer Boss | FEMA | |
| DP | Disaster Preparedness | FEMA | |
| DP | Double Pedestal | FEMA | |
| DP# | (Drop points are numbered and marked locations on a fire where people meet, equipment is exchanged, and resources may be stationed.) | FEMA | |
| DPA | Deepwater Ports Act | FEMA | |
| DPA | Defense Production Act | FEMA | |
| DPA | Delegation of Procurement Authority | I&A | MGMT | |
| DPAO | Deputy Public Affairs Officer | FEMA | |
| DPAO | Deputy Public Assistance Officer | FEMA | |
| DPAS | Defense Priorities and Allocations System | FEMA | |
| DPC | Domestic Policy Council | FEMA | |
| DPETAP | Domestic Preparedness Equipment Technical Assistance Program (NDPC) | FEMA | |
| DPFO | Deputy Principal Federal Official | FEMA | |
| DPG | Defense Planning Guidance | FEMA | |
| DPIG | Disaster Preparedness Improvement Grant | FEMA | |
| DPM | Disintegrations Per Minute | FEMA | |
| DPMT | Disaster Pediatric Medical Team | FEMA | |
| DPMU | Disaster Portable Morgue Unit | FEMA | |
| DPOD | Disaster Personnel Operations Division | FEMA | |
| DPP | Disaster Processing Procedures | FEMA | CISA | |
| DPP | Domestic Preparedness Program | FEMA | CISA | |
| DPPC | Data Protection and Privacy Commissioners | DHS | |
| DPRE | Displaced Persons, Refugees and Evacuees | FEMA | |
| DPRO | Display Processor | FEMA | |
| DPS | Department of Public Safety | FEMA | |
| DPS | Dry Pendent Sprinkler | FEMA | |
| DPV | Dry Pipe Valve | FEMA | |
| DPW | Department of Public Works | FEMA | CISA | |
| DR | Disaster Declaration Number (alphabetic designation or precursor for) | FEMA | |
| DR | Disaster Recovery | FEMA | |
| DR | Disaster Response | FEMA | |
| DR | Door(s) | FEMA | |
| DRASH | Deployable Rapid-Assembly Shelter | FEMA | |
| DRAT | District Response Advisory Team | FEMA | |
| DRC | Disaster Recovery Center | FEMA | |
| DRD | Direct-Reading Dosimeter | FEMA | |
| DREC | Deputy Regional Emergency Coordinator | FEMA | |
| DRES | Disaster Response Evaluation System | FEMA | |
| DRF | Disaster Relief Fund | FEMA | |
| DRF | Disaster Response Force | FEMA | |
| DRG | Digital Raster Graphic | FEMA | |
| DRG | Disaster Response Group | FEMA | |
| DRG | District Response Group | FEMA | |
| DRG | Domestic Readiness Group | FEMA | |
| DRII | Disaster Recovery Institute International | FEMA | |
| DRL | Derived Response Levels | FEMA | |
| DRM | Data Reference Model | MGMT | |
| DRO | Detention and Removal Office (ICE/DRO) | DHS | |
| DRP | Division of Radiation Protection | FEMA | |
| DRS | Disaster Reconnaissance System | FEMA | |
| DRSF | Disaster Response Support Facilities | FEMA | |
| DRSS | Division of Radiation Safety and Safeguards | FEMA | |
| DRT | Disaster Response Team (NIMA) | FEMA | |
| DRTF | Disaster Relief Task Force | FEMA | |
| DRU | Direct Reporting Unit | FEMA | |
| DRU | Disaster Resistant Universities | FEMA | |
| DRU | Disaster Response Unit | FEMA | |
| DRWD | Disaster Reserve Workforce Division | FEMA | |
| DS | Damage Survey | FEMA | |
| DS | Deputy Secretary | FEMA | |
| DSA | Digital Standard Algorithm | I&A | |
| DSB | Defense Science Board | FEMA | |
| DSBCC | Detection Systems for Biological & Chemical Countermeasures | S&T | |
| DSC | Digital Selective Calling | FEMA | |
| DSCA | Defense Support of Civil Authorities | FEMA | |
| DSCO | Deputy State Coordinating Officer | FEMA | |
| DSCS | Defense Satellite Communications System | FEMA | |
| DSEA | Domestic Security Enhancement Act of 2003 | OGC | |
| DSEC | Deputy Secretary | DHS | |
| DSEL | Dynamic Synchronization Event Log | FEMA | |
| DSES | Directory Services and E-mail System | MGMT | |
| DSFO | Deputy Senior FEMA Official | FEMA | |
| DSL | Digital Subscriber Line | FEMA | |
| DSN | Defense Switched Network | FEMA | |
| DSO | Director of Site Operations | FEMA | |
| DSO | Disaster Safety Officer | FEMA | |
| DSP | Disaster Support Package | FEMA | |
| DSR | Damage Survey Report | FEMA | |
| DSS | Digital Signature Standard | FEMA | |
| DSS | Decision Support System | CISA | |
| DSS | Diplomatic Security Service | ICE | USSS | |
| DSSG | Defense Science Study Group | S&T | |
| DSWA | Defense Special Weapons Agency | CISA | |
| DT | Development Team | FEMA | |
| DT&E | Development Test and Evaluation | FEMA | |
| DT/CPS | Domestic Terrorism/Counterterrorism Planning Section (FBIHQ) | FEMA | |
| DTAPPS | Disposable Toxicological Agent Personal Protection System | FEMA | |
| DTD | Data Transfer Device | FEMA | |
| DTD | Document Type Definition | FEMA | |
| DTE | Disaster Temporary Employee(s) | FEMA | MGMT | OPA | |
| DTED | Digital Terrain Elevation Data | FEMA | |
| DTG | Date-Time Group | FEMA | |
| DTIC | Defense Technical Information Center | FEMA | |
| DTM | Digital Terrain Model | FEMA | |
| DTMF | dual tone multi frequency switch | S&T | |
| DTMS | Disaster Transportation Management System | FEMA | |
| DTO | Drug Trafficking Organization | ICE | |
| DTOC | Deployable Tactical Operations Center | FEMA | |
| DTOS | Deployable Tactical Operations System | FEMA | |
| DTRA | Defense Threat Reduction Agency | CISA | CWMD | I&A | |
| DTRG | Defense Technical Response Group | FEMA | |
| DTRIM | Domestic Threat Reduction and Incident Management | FEMA | |
| DTS | Diplomatic Telecommunications Service | FEMA | |
| DTSA | Defense Technical Security Agency | FEMA | |
| DU | Dobson Unit | FEMA | |
| DUA | Disaster Unemployment Assistance | FEMA | |
| DUH | Detached Unit Housing | FEMA | |
| DUL | Documentation Unit Leader | FEMA | |
| DULL SWORD | Nuclear safety deficiency | FEMA | |
| DUNS | Data Universal Numbering System | MGMT | |
| DURC | dual use research of concern [life sciences] | S&T | |
| DUS | Deputy Under Secretary | FEMA | |
| DUSIO | Deputy Under Secretary for Intelligence Operations | I&A | |
| DUSM | Deputy United States Marshal | FEMA | |
| DUST OFF | Medical Evacuation via Helicopter (slang) | FEMA | |
| DV | Distinguished Visitor | FEMA | |
| DVA | Department of Veterans Affairs | FEMA | |
| DVD | Digital Versatile Disk | FEMA | |
| DVM | Doctor of Veterinary Medicine | FEMA | |
| DW | Data Window | FEMA | |
| DWG | Drawing (file) | FEMA | |
| DWI | Disaster Welfare Information (or Inquiry) | FEMA | |
| DWI | Driving While Intoxicated | FEMA | |
| DWML | Digital Weather Markup Language | FEMA | |
| DWR | Department of Water Resources | FEMA | |
| DWT | Dead Weight | FEMA | |
| DWT | deadweight ton | PLCY | |
| DXF | Drawing Exchange Format | FEMA | |
| DZOP | Dozer Operator | FEMA | |
| E 911 | Enhanced 9-1-1 | FEMA | |
| E number | Equipment number | FEMA | |
| E.O. | Executive Order of the President | FEMA | |
| EA | Eastern Area | FEMA | |
| EA | Emergency Action | FEMA | |
| EA | Energy Assurance | FEMA | |
| EA | Environmental Assessment | FEMA | |
| EA | External Affairs | FEMA | |
| EA | Enterprise Architecture | MGMT | |
| EAB | Enterprise Architecture Board | FEMA | |
| EAB | Exclusion Area Boundary | FEMA | |
| EACC | Eastern Area Coordination Center | FEMA | |
| EACG | Eastern Area Coordinating Group | FEMA | |
| EACOE | Enterprise Architecture Center of Excellence | MGMT | |
| EACT | Emergency Action and Coordination Team | FEMA | |
| EAD | Executive Associate Director | FEMA | |
| EAD | Employment Authorization Document | USCIS | PLCY | PRIV | |
| EADRCC | Euro-Atlantic Disaster Response Coordination Center | FEMA | |
| EAG | Exercise Analysis Group | FEMA | |
| EAGLE | Enterprise Acquisition Gateway for Leading Edge Solutions | MGMT | |
| EAI | Enterprise Application Integration | I&A | MGMT | |
| EAL | Emergency Action Level | FEMA | |
| EAL | Entry Authority List | FEMA | |
| EAM | Emergency Action Message | FEMA | |
| EAO | Emergency Action Officer | FEMA | |
| EAO | Energy Assurance Office (see also EA) | FEMA | |
| EAP | Emergency Action Plan | FEMA | |
| EAP | Emergency Action Procedures | FEMA | |
| EAP | Emergency Assistance Personnel | FEMA | |
| EAP | Employee Assistance Program | FEMA | |
| EAP | Event Action Plan | FEMA | |
| e-APIS | electronic-Advanced Passenger Information System | FEMA | |
| EAPMO | Enterprise Architecture Program Management Office | MGMT | |
| EAR | Emergency Alert Radio | FEMA | |
| EAR | Exercise Analysis Report | FEMA | |
| EARN | Employer Assistance Referral Network | CRCL | |
| EARS | Emergency Animal Rescue Service | FEMA | |
| EART | Evening Advisory Risk Threat | FEMA | |
| EAS | Emergency Alert System | FEMA | |
| EAWA | Employ American Workers Act | FEMA | |
| EBR | Endogenous Biological Regulators | S&T | |
| EBS | Emergency Broadcast System (see EAS) | FEMA | |
| EBT | Electronic Benefits Transfer | FEMA | |
| EBW | Electronic Bridge Wire | FEMA | |
| EBW | Exploding Bridge Wire | FEMA | |
| EBW | exploding bridge wire initiator | S&T | |
| EC | Electronic Commerce | FEMA | |
| EC | Elevation Certificate | FEMA | |
| EC | Emergency Coordinator | FEMA | |
| EC | Environment of Care (medical) | FEMA | |
| EC | Extraordinary Circumstances | FEMA | |
| ECA | Earth-orbit Crossing Asteroid | FEMA | |
| ECA | Edgewood Chemical Activity | FEMA | |
| ECAB | Emergency Change Advisory Board | MGMT | |
| ECAPS | Enterprise Coordination & Approval Processing System | FEMA | |
| ECBC | Edgewood Chemical Biological Center | FEMA | |
| ECC | Emergency Communications Center | FEMA | OPA | |
| ECCS | Emergency Core Cooling System | FEMA | |
| ECCV | Emergency Command and Control Vehicle | FEMA | |
| ECD | Effective Cumulative Dose | FEMA | |
| ECD | Emergency Contacts Directory | FEMA | |
| ECD | Estimated Completion Date | FEMA | |
| ECFG | Emergency Coordination Functional Group | FEMA | |
| ECG | Emergency Coordination Group | FEMA | |
| ECG | Exercise Control Group | FEMA | |
| ECI | Export-Controlled Information | FEMA | |
| ECL | Emergency Classification Level | FEMA | |
| ECN | Executive Control Node | FEMA | |
| ECP | Emergency Conservation Program | FEMA | |
| ECP | Entry Control Point | FEMA | |
| ECPC | Emergency Communications Preparedness Center | FEMA | |
| ECS | Electronic Certification System | FEMA | |
| ECS | Emergency Communications Staff | FEMA | |
| ECS | Emergency Coordinating Staff | FEMA | |
| ECSAP | Electronic Crimes Special Agent Program | USSS | |
| ECT | Emergency Coordinating Team, | FEMA | |
| ECT | Exercise Control Team | FEMA | |
| ECT | See IQ (formerly Executive or Enterprise Correspondence Tracking System) | DHS | |
| ECTF | Electronic Crimes Task Force | USSS | |
| ECU | Environmental Control Unit | FEMA | |
| ECWAG | Emergency Community Water Assistance Grant | FEMA | |
| ED | Effective Dose | S&T | |
| ED | Emergency Department | FEMA | |
| ED | United States Department of Education | DHS | |
| ED&DG | Exercise Design and Development Group | FEMA | |
| EDA | Economic Development Administration | FEMA | |
| EDAC | Economic Defense Advisory Committee | FEMA | |
| EDAP | Excess Delivery Acquisition Program | FEMA | |
| EDC | Energy Disruption Committee | FEMA | |
| EDC | EROS Data Center | FEMA | |
| EDD | Explosive Detection Device | TSA | |
| EDE | Effective Dose Equivalent | FEMA | |
| EDEN | Education Disaster Extension Network | OPA | |
| EDI | Electronic Data Interchange | CBP | I&A | MGMT | PLCY | |
| EDIFACT | EDI for Administration, Commerce, and Transport | FEMA | |
| EDIS | Emergency Disaster Information System | FEMA | |
| EDITH | Exit Drills In The Home | FEMA | |
| EDL | Environmental Disposal Liability | FEMA | |
| EDMO | Enterprise Data Management Office (formerly MCOE) | MGMT | |
| EDPP | Electronic Design and Pre-Press | FEMA | |
| EDR | Economic Development Representative | FEMA | |
| EDR | External Data Request | FEMA | |
| EDRC | Expanded Dispatch Recorder | FEMA | |
| EDS | Explosive Detection System(s) | FEMA | TSA | |
| EDT | Eastern Daylight Time | DHS | |
| EDT | Explosive Device Team | FEMA | |
| EDXL | Emergency Data Exchange Language | FEMA | |
| EDXL-DE | EDXL Distribution Element | FEMA | |
| EDXL-RM | Emergency Data Exchange Language Resource Messaging | FEMA | |
| EEE | Eastern Equine Encephalitis | FEMA | |
| EEE | Essential Evaluation Elements | FEMA | |
| EEG | Exercise Evaluation Guide | FEMA | |
| EEGL | Emergency Exposure Guidance Level | FEMA | |
| EEI | External Environment Interface | I&A | MGMT | PLCY | |
| EEI | Essential Elements of Information | DHS | |
| EEM | Exercise Evaluation Methodology | FEMA | |
| EENET | Emergency Education Network | FEMA | |
| EEO | Equal Employment Office | FEMA | |
| EEO | Equal Employment Opportunity | FEMA | |
| EEOC | Equal Employment Opportunity Commission | FEMA | CRCL | |
| EER | Eligible Existing Resources | FEMA | |
| EERI | Earthquake Engineering Research Institute | FEMA | |
| EESL | Extreme Events Simulation Laboratory | S&T | |
| EET | Emergency Evacuation Team | FEMA | |
| EEVS | Employment Eligibility Verification System | CBP | ICE | USCIS | |
| EEX | Employee Express | FEMA | |
| EEZ | Exclusive Economic Zone | FEMA | |
| EFAP | Emergency Feed Assistance Program | FEMA | |
| EFL | environmental financial liabilities | S&T | |
| EFO | Emergency Field Office | FEMA | |
| EFOP | Executive Fire Officer Program | FEMA | |
| EFP | Emergency Feed Program | FEMA | |
| EFP | explosively formed projectile charge | S&T | |
| EFPOP | Executive Fire Prevention Officer Program | FEMA | |
| EFS | Emergency Food & Shelter | FEMA | |
| EFSNB | Emergency Food and Shelter National Board | FEMA | |
| EFSP | Emergency Food and Shelter Program | FEMA | |
| EFT | Electronic Funds Transfer | FEMA | |
| E-GIS | DHS-wide enterprise GIS system | FEMA | |
| EGM | Enhancing Grants Management | FEMA | |
| E-Gov | E-Government | FEMA | |
| EHM | Earthquake Hazard Mitigation | FEMA | |
| EHP | Environmental Planning & Historic Preservation | FEMA | |
| EHP | Environmental/Historic Preservation | FEMA | |
| EHR | Electronic Health Records | FEMA | |
| EHS | Extremely Hazardous Substance | FEMA | |
| EHU | Emergency Housing Unit | FEMA | |
| EI | Exercise Information | FEMA | |
| EIC | Earned Income Credit | FEMA | |
| EIC | Emergency Interoperability Consortium | FEMA | |
| EICC | Emergency Information and Coordination Center | FEMA | |
| EID | Enforcement Integrated Database | CBP | ICE | USCIS | I&A | PLCY | |
| EIDA | Executive Information and Display Area | FEMA | |
| EIDL | Economic Injury Disaster Loan | FEMA | |
| EIIP | Emergency Information Infrastructure Partnership | FEMA | |
| EIM | Emergency Information Management | FEMA | |
| EIMA | Emergency Information and Media Affairs | FEMA | |
| EIN | Employer Identification Number | FEMA | |
| EIO | Emergency Information Officer | FEMA | |
| EIPA | Emergency Information and Public Affairs | FEMA | |
| EIPT | Exercise Integrated Process Team | FEMA | |
| EIRS | Emergency Information Retrieval System | FEMA | |
| EIS | Epidemic Intelligence Service | I&A | |
| EIS | Emergency Information System | FEMA | OPA | |
| EIS | Environmental Impact Statement | FEMA | |
| EIS | Epidemiological Intelligence Service | FEMA | |
| EIT | Electronic Information Technology | CRCL | |
| EIT | electronic and information technology | MGMT | |
| EITS | Enhanced International Travel Security System | S&T | PLCY | PRIV | |
| EKU | Eastern Kentucky University | FEMA | |
| ELC | Engineering Logistics Center | USCG | |
| ELF | Earth Liberation Front | FEMA | |
| ELINT | Electronic Intelligence | CWMD | I&A | OPS | |
| ELO | Enabling Learning Objectives | FEMA | |
| ELO | Environmental Liaison Officer | FEMA | |
| ELR | Employee Labor Relations | FEMA | |
| ELT | Emergency Location Transmitter | USCG | |
| ELT | Evacuation Liaison Team | FEMA | |
| EM | Emergency Management | FEMA | |
| EM | Emergency Manager | FEMA | |
| EM | Environmental Management | FEMA | |
| EM | Exercise Manual | FEMA | |
| EMA | Emergency Management Agency | FEMA | |
| EMAC | Emergency Management Assistance Compact | FEMA | |
Electronic Mail | FEMA | | |
| EMAP | Emergency Management Accreditation Program Standard | FEMA | S&T | |
| EMAS | Emergency Management Assessment System | FEMA | |
| EMD | Electronic Monitoring Device | ICE | |
| EMD | Emergency Management Director | FEMA | |
| EMD | Emergency Management Division | FEMA | |
| EMD | Emergency Medical Dispatcher | FEMA | |
| EMERCOM | Emergency Command | FEMA | |
| EMERGCON | Emergency Condition | FEMA | |
| eMerge2 | electronically Managing enterprise resources for government effectiveness and efficiency | DHS | |
| EMERS | Emergency Management Exercise Reporting System | FEMA | |
| EMI | Electromagnetic Interference | FEMA | |
| EMI | Emergency Management Institute | FEMA | |
| EMI | Emergency Management Institute, Board of Visitors for the | FEMA | |
| EMIO | Expanded Maritime Interdiction Operation | USCG | |
| EMIS | Emergency Management Information System | FEMA | |
| EML | Environmental Measurements Laboratory | S&T | CWMD | |
| EMMIE | Emergency Management Mission Integrated Environment (disasters) | FEMA | |
| EMNPP | Emergency Management and National Preparedness Program | FEMA | |
| EMOC | Emergency Management Operations Center | FEMA | |
| EMOC | Emergency Management Operations Course | FEMA | |
| EMP | Electromagnetic Pulse | FEMA | |
| EMP | Emergency Management Plan | FEMA | |
| EMPA | Emergency Management Planning and Assistance | FEMA | |
| EMPG | Emergency Management Performance Grant | FEMA | |
| EMPO | Emergency Medical Preparedness Office | FEMA | |
| EMPS | Emergency Management Program Specialist | FEMA | |
| EMPTY QUIVER | Theft, seizure, or loss of a nuclear weapon or component | FEMA | |
| EMR | Electromagnetic Radiation | FEMA | |
| EMR | Emergency Minimal Repair | FEMA | |
| EMR | Environmental Management Review | FEMA | |
| EMR-ISAC | Emergency Management & Response-Information Sharing & Analysis Center | FEMA | |
| EMRS | Emergency Management Response System | FEMA | |
| EMRT | Emergency Medical Response Team | FEMA | |
| EMS | Emergency Management Specialist | FEMA | |
| EMS | Emergency Medical Services | FEMA | |
| EMS | Emergency Medical System | FEMA | |
| EMS | Environmental Management System | FEMA | |
| EMS | Evacuation Management System | FEMA | |
| EMSHG | Emergency Management Strategic Healthcare Group | FEMA | |
| EMSSA | Emergency Medical Services System Act | FEMA | |
| EMSTEAC | Emergency Medical Services Training Education Advisory Council | MGMT | |
| EMT | Emergency Management Team | FEMA | |
| EMT | Emergency Management Training | FEMA | |
| EMT | Emergency Medical Technician | FEMA | |
| EMTALA | Emergency Medical Treatment and Active Labor Act | FEMA | |
| EMTASC | Emergency Management Training, Analysis & Simulation Center | FEMA | |
| EMT-B | Emergency Medical Technician - Basic | FEMA | |
| EMT-I | Emergency Medical Technician - Intermediate | FEMA | |
| EMT-P | Emergency Medical Technician - Paramedic | FEMA | |
| EMWIN | Emergency Managers Weather Information Network | FEMA | |
| END | Exotic Newcastle Disease | FEMA | |
| ENDEX | End of Exercise | FEMA | |
| ENGB | Engine Boss | FEMA | |
| ENOP | Engine Operator | FEMA | |
| ENR | Environmental and Natural Resources | FEMA | |
| ENS | Emergency Notification Service/System | FEMA | |
| ENSO | El Nino / Southern Oscillation | FEMA | |
| EO | Electro-Optical | FEMA | OGC | |
| EO | Emergency Office | FEMA | |
| EO | Environmental Officer | FEMA | |
| EO | Executive Order | FEMA | OGC | |
| EO | Exterior Orientation (Parameter) | FEMA | |
| EO/IR | Electro Optical/Infrared | CBP | ICE | |
| EOC | Emergency Operations Center | FEMA | |
| EOC | European Olympic Committee | FEMA | |
| EOD | Entered on Duty | FEMA | |
| EOD | Explosive Ordnance Disposal | FEMA | S&T | |
| EOD | entrance on duty | MGMT | |
| EOD | entry on duty | MGMT | |
| EOD determination | entry on duty determination | MGMT | |
| EOD determination | entrance on duty determination | MGMT | |
| EOE | Equal Opportunity Employer | FEMA | |
| EOEA | Executive Office of Environmental Affairs | FEMA | |
| EOF | Emergency Operations/Operating Facility | FEMA | |
| EOF | End of File | FEMA | |
| EOG | Exercise Observation Group | FEMA | |
| EOIR | Executive Office for Immigration Review | ICE | USCIS | |
| EOM | End of Month | FEMA | |
| EOO | Emergency Operations Organization | FEMA | |
| EOP | Emergency Operations/Operating Plan | FEMA | |
| EOP | Executive Office of the President | DHS | |
| EOP | Extent of Play | FEMA | |
| EOPT | Emergency Operations Planning Template | FEMA | |
| EOS | Earth-Observing System | FEMA | |
| EOS | Emergency Operations Software | FEMA | |
| EOS | Equation of State | FEMA | |
| EOT | Emergency Operations Team | FEMA | |
| EOV | Emergency Operations Vehicle | FEMA | |
| EOW | Envelope of Water | FEMA | |
| EP | Electric Power | FEMA | |
| EP | Emergency Programs | FEMA | |
| EP&HP | environmental planning and historic preservation | DHS | |
| EP&HP DSS | environmental planning and historic preservation decision support system | DHS | |
| EPA | United States Environmental Protection Agency | DHS | |
| EPAD | Emergency Provider Access Directory | FEMA | |
| EPAL | Enterprise Privacy Authorization Language | FEMA | |
| EPAP | Equipment Purchase Assistance Program | FEMA | |
| EPC | Emergency Preparedness Canada | FEMA | |
| EPCA | Energy Policy and Conservation Act | FEMA | |
| EPCRA | Emergency Planning and Community Right-to-Know Act | FEMA | |
| EPD | Electronic Personnel Dosimeter | FEMA | |
| EPEAT® | electronic product environmental assessment tool | MGMT | |
| EPG | Emergency Planning Guide | FEMA | |
| EPG | Exercise Preparation Guide | FEMA | |
| EPI | Emergency Public Information | FEMA | OPA | |
| EPIC | Emergency Preparedness Information Coordinator | FEMA | OPA | |
| EPIC | Electronic Privacy Information Center | TSA | S&T | PLCY | PRIV | |
| EPICS | Emergency Preparedness Incident Command Stimulation | FEMA | |
| EPL | Evaluated Products List | FEMA | |
| EPLO | Emergency Preparedness Liaison Officer | FEMA | |
| EPM | Environmental Planning and Historic Preservation Program Manager | DHS | |
| EPMS | Environmental Portable Monitoring System | FEMA | |
| EPO | Environmental Protection Officer | FEMA | |
| EPOC | Emergency Point(s) of Contact | FEMA | |
| EPOC | Emergency Preparedness Operations Center | FEMA | |
| EPP | environmentally preferable | DHS | |
| EPP | Employee Personal Page | FEMA | |
| EPP | Executive Potential Program | FEMA | |
| EPPC | Emergency Prevention and Preparedness Council | FEMA | |
| EPPM | Emergency Planning, Preparedness, and Mobilization | FEMA | |
| EPPM | Environmental Planning Program Manager | FEMA | |
| EPR | Emergency Preparedness and Response | DHS | |
| EPS | Encapsulated PostScript | FEMA | |
| EPSCoR | Experimental Program to Stimulate Competitive Research | FEMA | |
| EPW | Exercise Planning Workshop | FEMA | |
| EPZ | Emergency Planning Zone | FEMA | |
| EQPCE | Earthquake Preparedness Center of Expertise | FEMA | |
| EQPI | Equipment Inspector | FEMA | |
| EQPM | Equipment Manager | FEMA | |
| EQTR | Equipment Time Recorder | FEMA | |
| EQUIP | Earthquake Impacts Projection (Model) | FEMA | |
| E-Quip | Electronic Questionnaire for Investigation Processing | FEMA | |
| ER | Emergency Relief | FEMA | |
| ER | Emergency Room | FEMA | |
| ER | Equal Rights | FEMA | |
| ER | Expedited Removal | CBP | ICE | |
| ERAMS | Environmental Radiation Ambient Monitoring System | FEMA | S&T | |
| ERB | Economic Resources Board | FEMA | |
| ERC | Emergency Response Coordinator | FEMA | |
| ERCG | Emergency Response Coordination Group | FEMA | |
| ERCP | Emergency Response Concept Plan | FEMA | |
| ERDA | Energy Research and Development Administration | FEMA | |
| ERDC | Engineer Research and Development Center [United States Army] | S&T | |
| ERDEC | Edgewood Research, Development and Engineering Center | FEMA | |
| ERF | Emergency Response Facility | FEMA | |
| ERFOG | Emergency Responder Field Operating Guide | FEMA | |
| ERG | Emergency Relocation Group | FEMA | |
| ERL | Environmental Research Laboratories | FEMA | |
| ERLink | Emergency Response Link | FEMA | |
| ERM | Enforcement Removal Module | ICE | |
| ERM | Elevation Reference Mark | FEMA | |
| ERMS | Enterprise Records Management System | MGMT | |
| ERMS | Emergency Resource Management System | FEMA | |
| ERN | Emergency Response Network | FEMA | |
| ERO | Emergency Response Official | FEMA | |
| ERO | Equal Rights Office | FEMA | |
| ERO | Equal Rights Officer | FEMA | |
| EROS | Earth Resources Observing Satellite | FEMA | |
| ERP | Expedited Removal Process | ICE | |
| ERP | Elevation Reference Point | FEMA | |
| ERP | Emergency Response Plan | FEMA | |
| ERP | Enterprise Resource Planning | I&A | MGMT | |
| ERPA | Emergency Response Planning Area | FEMA | |
| ERPG | Emergency Response Guidelines | FEMA | |
| ERPS | Effluents Radiation Protection Section | FEMA | |
| ERPS | Emergency Response Planning Scenario | FEMA | |
| ERRO | Emergency Response/Recovery Office (USACE) | FEMA | |
| ERRS | Emergency and Rapid Response Services | FEMA | |
| ERS | Emergency Relocation Site | FEMA | |
| ERS | Executive Reporting System | FEMA | |
| ERSAC | Emergency Response Senior Advisory Committee | PLCY | |
| ERT | Environmental Response Team | FEMA | |
| ERT | Emergency Response Team | FEMA | TSA | |
| ERT | Evidence Response Team | FEMA | TSA | |
| ERT:BC | Emergency Response to Terrorism: Basic Concepts | FEMA | |
| ERT:SS | Emergency response to Terrorism: Self-Study | FEMA | |
| ERT-A | Emergency Response Team - Advance Element | FEMA | |
| ERT-N-NCR | National Emergency Response Team for the National Capital Region | FEMA | |
| ERT-S | Emergency Response Team Support Capability | FEMA | |
| ERV | Emergency Response Vehicle | FEMA | |
| ERW | Enhanced Radiation Weapon | FEMA | S&T | |
| ES | Emergency Support | FEMA | |
| ES | End System | FEMA | |
| ES | Engineering Section (Information Resources Division, FBIHQ) | FEMA | |
| ES | Environmental Specialist | FEMA | |
| ES | Executive Secretariat (see ESEC) | FEMA | |
| ESA | Endangered Species Act | FEMA | |
| ESA | essential supporting activity | MGMT | |
| ESAP | Energy Security and Assurance Program | CISA | |
| ESAR-VHP | Emergency System for the Advanced Registration of Volunteer Health Professionals | FEMA | |
| ESC | Executive Steering Committee | FEMA | |
| ESCAP | Electronic Crimes Special Agent Program | USSS | |
| ESD | Emergency Services Director | FEMA | |
| ESDP | Engineering Study Data Package | FEMA | |
| ESDPF | Engineering Study Data Package Facility | FEMA | |
| ESDRB | Emergency Services and Disaster Relief Branch | FEMA | |
| ESEC | Executive Secretariat | DHS | |
| ESEC | Office of the Executive Secretary | MGMT | |
| ESF | Emergency Support Function | FEMA | CISA | PLCY | |
| ESF 01 | Emergency Support Function - Transportation | FEMA | |
| ESF 02 | Emergency Support Function - Communications | FEMA | |
| ESF 03 | Emergency Support Function - Public Works and Engineering | FEMA | |
| ESF 04 | Emergency Support Function - Firefighting | FEMA | |
| ESF 05 | Emergency Support Function - Emergency Management | FEMA | |
| ESF 06 | Emergency Support Function - Mass Care, Emergency Assistance, Housing, and Human Services | FEMA | |
| ESF 07 | Emergency Support Function - Logistics Management and Resource Support | FEMA | |
| ESF 08 | Emergency Support Function - Public Health and Medical Services | FEMA | |
| ESF 09 | Emergency Support Function - Search and Rescue | FEMA | |
| ESF 10 | Emergency Support Function - Oil and Hazardous Materials Response | FEMA | |
| ESF 11 | Emergency Support Function - Agriculture and Natural Resources | FEMA | |
| ESF 12 | Emergency Support Function - Energy | FEMA | |
| ESF 13 | Emergency Support Function - Public Safety and Security | FEMA | |
| ESF 14 | Emergency Support Function - Long-term Community Recovery | FEMA | |
| ESF 15 | Emergency Support Function - External Affairs | FEMA | |
| ESFLG | Emergency Support Function Leaders Group | FEMA | |
| ESGR | Employer Support of the Guard and Reserve | USCG | |
| ESI | Electronically stored information | MGMT | |
| ESIC | Earth Science Information Center | FEMA | |
| ESIF | Emergency Services Interconnect Forum | FEMA | |
| ESL | English as a Second Language | FEMA | |
| ESM | Electronic Support Measures | FEMA | |
| ESM | Enterprise Security Manager | FEMA | |
| ESN | Electronic Serial Number | FEMA | |
| ESO | Energy Senior Official | FEMA | |
| ESOH | environment, safety, and occupational health requirements | MGMT | |
| ESP | Early Site Permit | FEMA | |
| ESP | Electric Service Priority | FEMA | |
| ESP | Extranet Secure Portal | FEMA | |
| ESPC | Energy Savings Performance Contract | MGMT | |
| ESS | Electronic Switching System | FEMA | |
| ESS | Emergency Services Sector | FEMA | |
| ESS | Environmental Sensor Station | FEMA | |
| ESS-SSA | Emergency Services Sector-Sector Specific Agency | FEMA | |
| ESSV | Emergency Support Service Vehicle | FEMA | |
| EST | Eastern Standard Time | DHS | |
| EST | Emergency Support Team | FEMA | |
| ESTA | Electronic System for Travel Authorization | CBP | TSA | PLCY | PRIV | |
| ESTD | Established | FEMA | |
| ESTED | Estimated Safe Time before Evacuation Decisions | FEMA | |
| ESTI | Emergency Services Training Institute | FEMA | |
| ET | Electronic Technician | FEMA | |
| ET | End of Transect (Line) | FEMA | |
| ETA | Employment and Training Administration | FEMA | |
| ETA | Estimated time of arrival | DHS | |
| ETAG | Employee Training Advisory Group | FEMA | |
| ETC | Emergency Transportation Center | FEMA | |
| etc | et cetera | FEMA | |
| ETD | Explosives Trace Detector | TSA | |
| ETD | Estimated time of departure | DHS | |
| ETE | Estimated Time Enroute | FEMA | |
| ETE | Evacuation Time Estimate | FEMA | |
| ETIC | Estimated Time in Commission | FEMA | |
| ETIS | Emergency Traffic Information System | FEMA | |
| ETJ | Extra-Territorial Jurisdiction (Limits) | FEMA | |
| ETL | Extraction, Transformation and Loading | I&A | MGMT | PLCY | PRIV | |
| ETO | Exercise and Training Officer | FEMA | |
| ETOC | Emergency Tactical Operations Center | FEMA | |
| ETP | Employment and Transition Plan | FEMA | |
| ETRMS | Emergency Transportation Resource Management System | FEMA | |
| ETS | Evacuation Time Study | FEMA | |
| ETT | Eligible Travel Trailer | FEMA | |
| EU | European Union | CBP | PLCY | |
| EU | Explosives Unit (BDC, FBI) | FEMA | |
| EUI | energy use intensity | DHS | |
| EVM | Earned Value Management | FEMA | |
| EVMS | earned value management system | MGMT | |
| EVT | Emergency Vehicle Technician | FEMA | |
| EVVE | Electronic Verification of Vital Events | USCIS | PLCY | PRIV | |
| EW | Emergency Worker | FEMA | |
| EWAC | Emergency Worker and Assistance Center | FEMA | |
| EWC | Emergency Worker Center | FEMA | |
| EWF | Electronic Warfare | FEMA | |
| EWI | Entry Without Inspection | CBP | ICE | USCG | |
| EWMDS | Emergency Worker Monitoring and Decontamination Station | FEMA | |
| EWO | Emergency War Order | FEMA | |
| EWP | Emergency Watershed Protection | FEMA | |
| EWRI | Environmental and Water Resources Institute | FEMA | |
| EX/IM Bank | Export/Import Bank of the United States | FEMA | |
| EXB | Export-Import Bank | I&A | |
| EXD | Explosives Division (S&T/EXD) | DHS | |
| EXPLAN | Exercise Plan | FEMA | |
| EXTIN | Extinguisher | FEMA | |
| F&STD | Fire and Safety Test Detachment | FEMA | |
| F/ERO | Federal Emergency and Mutual Aid Response Official | FEMA | |
| F/WRKGPS | For Work Groups | FEMA | |
| FAA | Federal Aviation Administration | DHS | |
| FAA | Foreign Assistance Act | FEMA | |
| FAADS | Federal Assistance Award Data System | FEMA | |
| FAAP | Foreign Airport Assessment Program | TSA | |
| FAAR | Facilitated After Action Report | FEMA | |
| FAAS | FEMA Automated Acquisition System | FEMA | |
| FAAT | FEMA Acronyms, Abbreviations, & Terms | FEMA | |
| FAAT | Fully Analytical Aerial Triangulation | FEMA | |
| FAB | FEMA Advisory Board | FEMA | |
| FAC | Foreign Air Carrier | TSA | |
| FAC | Family Assistance Center | FEMA | |
| FAC | Financial Attack Center | ICE | |
| FACA | Federal Advisory Committee Act | DHS | |
| FACL | Facilities Unit Leader | FEMA | |
| FACMAN | Facilities Management System | FEMA | |
| FACNET | Federal Acquisition Network | FEMA | |
| FACP | Fire Alarm Control Panel | FEMA | |
| FAC-P/PM | Federal Acquisition Certification for Program and Project Managers (*) | MGMT | |
| FAD | Foreign Animal Disease | FEMA | |
| FADED GIANT | Nuclear reactor radiological incident/ accident | FEMA | |
| FAE | Fuel Air Explosives | FEMA | |
| FAEST | Forward Area Emergency Support Trailers | FEMA | |
| FAI | Fire/Arson Investigation | FEMA | |
| FAIH | Federal Assistance to Individuals and Households | FEMA | |
| FAIR | Federal Activities Inventory Reform Act [of 1998] | OGC | |
| FAIR | Fair Access to Insurance Requirements | FEMA | |
| FAITS | FEMA Automated Inventory Tracking System | FEMA | |
| FALA | Faller A | FEMA | |
| FALB | Faller B | FEMA | |
| FALC | Faller C | FEMA | |
| FAM | Federal Air Marshal | TSA | |
| FAMA | Fire Apparatus Manufacturers' Association | FEMA | |
| FAMAS | Facility Accreditation Management and Administration System | FEMA | |
| FAMC | Fire Apparatus Manufactures’ Association | FEMA | |
| FAMIS | FEMA Audit Management Information System | FEMA | |
| FAMS | Federal Air Marshal Service (see OLE/FAMS) | TSA | |
| FANMAP | FEMA Automated Network Management Program | FEMA | |
| FAO | Federal Approving Officer | FEMA | |
| FAO | Federal Approving Official | FEMA | |
| FAO | Food & Agricultural Organization (UN) | FEMA | |
| FAOC | FEMA Alternate Operations Center | FEMA | |
| FAPRS | Federal Access Program Retrieval System | FEMA | |
| FAQ | Frequently Asked Questions | DHS | |
| FAR | Federal Acquisition Regulation | I&A | MGMT | |
| FAR | Federal Aviation Regulations | FEMA | |
| FARS | Financial Accounting and Reporting System | FEMA | |
| FAS | Freight Assessment System | TSA | |
| FAS | Federal Acquisition Service | FEMA | |
| FAS | Foreign Agricultural Service | FEMA | |
| FAS | Freely Associated States | FEMA | |
| FASSE | Federal Agency Support Service Element | FEMA | |
| FAST | Future Attribute Screening Technology | S&T | |
| FAST | Field Assessment Team | FEMA | |
| FAST | Free and Secure Trade [Initiative] | CBP | TSA | PLCY | PRIV | |
| FAST | Free and Secure Trade program | PLCY | |
| FAT | first article testing | MGMT | |
| FAX | Facsimile | FEMA | |
| FBAN | Fire Behavior Analyst | FEMA | |
| FBCI | Faith-Based and Community Initiatives | FEMA | |
| FBCO | Faith-Based and Community Organizations | FEMA | |
| FBFM | Flood Boundary and Floodway Map | FEMA | |
| FBI | Federal Bureau of Investigation | DHS | |
| FBIIC | Financial and Banking Information Infrastructure Committee | CISA | |
| FBINet | Federal Bureau of Investigation Network | I&A | |
| FBN | Federal Base Network | FEMA | |
| FBO | Fixed Base Operator | FEMA | |
| FBR | Fast Breeder Reactor | FEMA | |
| FC | Fire Control | FEMA | |
| FC | Fire Corps (Citizen Corps Program Partner administered by USFA) | FEMA | |
| FC | Federal Coordinator | OPS | |
| FCA | Farm Credit Administration | FEMA | |
| FCA | facility condition assessment | S&T | |
| FCBA | Federal Communications Bar Association | S&T | OGC | |
| FCC | Federal Coordinating Center | FEMA | |
| FCC | Federal Communications Commission | DHS | |
| FCD | Financial Crimes Division | FEMA | |
| FCDA | Federal Civil Defense Agency | FEMA | |
| FCE | Functional Capability Element | FEMA | |
| FCI | Facility Condition Index | FEMA | |
| FCIC | Federal Crop Insurance Corporation | FEMA | |
| FCIP | Federal Crime Insurance Program | FEMA | |
| FCIP | Federal Career Intern Program | FEMA | MGMT | |
| FCIS | Federal Crime Insurance System | FEMA | |
| FCM | Federal Communications Manager | FEMA | |
| FCMG | Fire Cache Manager | FEMA | |
| FCMSSR | Federal Committee for Meteorological Services and Supporting Research | FEMA | |
| FCO | Federal Coordinating Officer | FEMA | CISA | |
| F-codes | Charge codes for FEMA incidents | FEMA | |
| FCP | Federal Center Plaza | FEMA | |
| FCP | Field/Forward Command Post | FEMA | |
| FCRR | Fundamentals Course for Radiological Response | FEMA | |
| FCS | Farm Credit Service | FEMA | |
| FCS | Food and Consumer Service | FEMA | |
| FCSA | Fee-Charge System Administrator | FEMA | |
| FCT | Forward Coordinating Team | FEMA | |
| FD | Fire Department | FEMA | |
| FD | Foundation Data | FEMA | |
| FDA | Food & Drug Administration | FEMA | CISA | I&A | |
| FDC | Fire Department Connection | FEMA | |
| FDDI | Fiber Distributed Data Interface | I&A | MGMT | PLCY | |
| FDIC | Federal Deposit Insurance Corporation | DHS | |
| FDID | Fire Department Identification Number | FEMA | |
| FDL | Forensic Documents Laboratory | ICE | |
| FDMS | Federal Docketing Management System | OGC | |
| FDNS | Fraud Detection and National Security Unit | USCIS | |
| FDO | Flight Deck Officer | FEMA | |
| FDP | Federal Demonstration Project | FEMA | |
| FDRO | Foreign Disclosure and Release Officer | I&A | |
| FDSOA | Fire Department Safety Officers Association | FEMA | |
| FDSS | Federal Drug Seizure System | CBP | |
| FDUL | Food Unit Leader | FEMA | |
| FE | Fire Extinguisher | FEMA | |
| FE | Functional Exercise | FEMA | |
| FEA | Federal Enterprise Architecture | I&A | MGMT | |
| FEA | front-end analysis | MGMT | |
| FEB | Federal Executive Board | FEMA | |
| FEB | Federal Executive Branch | FEMA | |
| FEC | Facility Emergency Coordinator | FEMA | |
| FEC | Federal Election Commission | FEMA | |
| FEC | Federal Electronics Challenge | FEMA | |
| FECA | Federal Employees Compensation Act | FEMA | |
| FECC | Federal Emergency Communications Coordinator | FEMA | CISA | |
| FED – TRT | Federal Tactical Response Team | FEMA | |
| FEDCIRC | Federal Computer Incident Response Center | CISA | |
| FEDD | Flood Elevation Determination Docket | FEMA | |
| FEDMER | Federal Medical Evidence of Record | MGMT | |
| FED-STD | Federal Standard | FEMA | |
| FEEA | Federal Employee Education & Assistance | TSA | MGMT | |
| FEFFLA | Federal Employees Family Friendly Leave Act | FEMA | |
| FEGLI | Federal Employees' Group Life Insurance | MGMT | |
| FEHB | Federal Employees Health Benefits | MGMT | |
| FEHB | Federal Employee Health Benefits program | MGMT | |
| FEI | Federal Executive Institute | FEMA | |
| FEIMS | Fire and Explosion Investigation Management System | FEMA | |
| FEIS | Final Environmental Impact Statement | FEMA | |
| FEKC | FEMA Employee Knowledge Center | FEMA | |
| FELB | Felling Boss | FEMA | |
| FEMA | Federal Emergency Management Agency | DHS | |
| FEMAAR | Federal Emergency Management Agency Acquisition Regulation | FEMA | |
| FEMIS | Federal Emergency Management Information System | FEMA | |
| FEMO | Fire Effects Monitor | FEMA | |
| FEMSA | Fire and Emergency Manufacturers and Services Association | FEMA | |
| FEPA | Fair Employment Practices Agency | FEMA | |
| FERC | FEMA Emergency Response Capability | FEMA | |
| FERC | Federal Energy Regulatory Commission | CISA | S&T | |
| FERO | Federal Emergency Response Official | MGMT | |
| FERS | Federal Employees Retirement System | MGMT | |
| FES | Field Evaluation System | FEMA | |
| FESC | Federal Emergency Support Coordinator | FEMA | |
| FESHE | Fire and Emergency Services Higher Education | FEMA | |
| FEST | Foreign Emergency Support Team | FEMA | |
| FEVS | Federal Employee Viewpoint Survey | DHS | |
| FF | Firefighter | FEMA | |
| FFALC | Federal Fire and Aviation Leadership Council | FEMA | |
| FFAMIA | Federal Financial Assistance Management Improvement Act | FEMA | |
| FFARS | FEMA Facsimile and Record System | FEMA | |
| FFATA | Federal Funding Accountability and Transparency Act | FEMA | |
| FFC | FEMA Finance Center (OCFO) | FEMA | |
| FFCD | Full, Final, and Complete Disclosure | FEMA | |
| FFDO | Federal Flight Deck Officer | TSA | |
| FFE | Federal Field Exercise | FEMA | |
| FFFI&PP | Firefighter Fatality Investigation & Prevention Program (NIOSH) | FEMA | |
| FFI | Financial Fraud Institute | FLETC | |
| FFMIA | Federal Financial Management Improvement Act | FEMA | |
| FFMS | FEMA Frequency Management System | FEMA | |
| FFO | First Federal Official | FEMA | |
| FFRDC | Federally Funded Research and Development Center | S&T | OGC | |
| FFS | Federal Financial System | I&A | MGMT | |
| FFSTG | Federal Fire Service Task Group | FEMA | |
| FFT1 | Firefighter Type 1 | FEMA | |
| FFT2 | Firefighter Type 2 | FEMA | |
| FG | fiscal guidance | MGMT | |
| FGCC | Federal Geodetic Coordinating Committee | FEMA | |
| FGDC | Federal Geographic Data Committee | FEMA | |
| FGI | Foreign Government Information | FEMA | |
| FH | Fire Hydrant | FEMA | |
| FHA | Federal Housing Administration | FEMA | |
| FHA | Fire Hazards Analysis | FEMA | |
| FHA | Flood Hazard Area | FEMA | |
| FHAR | Flood Hazard Analyses Report | FEMA | |
| FHBM | Flood Hazard Boundary Map | FEMA | |
| FHCS | Federal Human Capital Survey | MGMT | |
| FHFB | Federal Housing Finance Board | FEMA | |
| FHH | Fire Hose House | FEMA | |
| FHM | Flood Hazard Mapping | FEMA | |
| FHML | Federal Hazardous Material Law | FEMA | |
| FHR | Fire Hose Rack | FEMA | |
| FHR | Fire Hose Reel | FEMA | |
| FHWA | Federal Highway Administration | FEMA | TSA | |
| FIA | Federal Insurance Administration | FEMA | |
| FIAB | Foreign Intelligence Advisory Board | I&A | |
| FIAMIS | Federal Insurance Administration Management Information System | FEMA | |
| FICA | Federal Insurance Contributions Act | FEMA | |
| FICC | Federal Interagency Coordination Council | S&T | |
| FICEMS | Federal Interagency Committee on Emergency Medical Services | FEMA | |
| FICO | Flood Insurance Claims Office | FEMA | |
| FICO | Flood Insurance Claims Officer | FEMA | |
| FIDA | FEMA Information Data and Analysis | FEMA | |
| FIDLER | Field Instrument for the Detection of Low Energy Radiation | FEMA | |
| FIE | foreign intelligence entity | I&A | |
| FIFMS | FEMA Integrated Financial Management System | FEMA | |
| FIG | Field Intelligence Groups | FEMA | |
| FIMO | Federal Incident Management Official | FEMA | |
| FIN | Fingerprint Identification Number | I&A | |
| FINCEN | Financial Center | FEMA | |
| FINCEN | Financial Crimes Enforcement Network | FLETC | ICE | |
| FinCEN | Financial Crimes Enforcement Network Project Gateway | I&A | |
| FINS | Federal Information Notices | FEMA | |
| FIO | Federal Information Officer | FEMA | |
| FIO | Fire Information Officer | FEMA | |
| FIOC | Federal Interagency Operations Center | FEMA | |
| FIP | Federal Information Processing | FEMA | |
| FIPNC | Flood Insurance Producers National Committee | FEMA | |
| FIPS | FOIA Information Processing System | PRIV | |
| FIPS | Federal Information Processing Standard | I&A | |
| FIR | Federal Inspection Report | FEMA | |
| FIR | Final Inspection Report | FEMA | |
| FIR | Flood Insurance Report | FEMA | |
| FIRB | Firing Boss | FEMA | |
| FIRESAT | Fire-Detection Satellite System (previously known as the Integrated Hazard Information System) | FEMA | |
| FIRESCOPE | Firefighting Resources of California Organized for Potential | FEMA | |
| FIRM | Flood Insurance Rate Map | FEMA | |
| FIRM-DLG | Flood Insurance Rate Map-Digital Line Graph | FEMA | |
| FIRMPD | FEMA Information Resources Management Procedural Directive | FEMA | |
| FIRMR | Federal Information Resources Management Regulation | FEMA | |
| FIS | Flood Insurance Study | FEMA | |
| FISA | Foreign Intelligence Surveillance Act | OGC | |
| FISH | Forensic Information System for Handwriting | USSS | S&T | |
| FISMA | Federal Information Security Management Act | I&A | MGMT | |
| FIST | Field Intelligence Support Team | USCG | |
| FIT | Failed Income Test | FEMA | |
| FIT | Financial Information Tool | FEMA | |
| FLAG | FEMA Logistics Advisory Group | FEMA | |
| FLAR | Forward Looking Airborne Radar | FEMA | |
| FLASH | Fellow Law Enforcement Agencies Securing the Homeland | ICE | |
| FLDPLN | Floodplains | FEMA | |
| FLEA | Fireline Explosive Advisor | FEMA | |
| FLEB | Fireline Blaster | FEMA | |
| FLETA | Federal Law Enforcement Training Accreditation | FEMA | |
| FLETC | Federal Law Enforcement Training Center | FEMA | |
| FLETC | Federal Law Enforcement Training Center (formerly Subcomponent under BTS) | DHS | |
| FLEX | Federal or FEMA Leadership Exercise | FEMA | |
| FlHB | Fire Line Hand Book | FEMA | |
| FLIR | Forward Looking Infrared Radar | CBP | TSA | |
| FLO | Fusion Liaison Officer | I&A | |
| FLRA | Federal Labor Relations Authority | FEMA | MGMT | OPA | |
| FLS | Flood Statement | FEMA | |
| FM | Financial Management | FEMA | |
| FM | Force Module | FEMA | |
| FM | Frequency Modulation | FEMA | |
| FMA | Field Mitigation Assistance | FEMA | |
| FMA | Floodplain Management Association | FEMA | |
| FMA | Flood Mitigation Assistance | FEMA | |
| FMAGP | Fire Management Assistance Grant | FEMA | USFA | |
| FMAGP | Fire Management Assistance Grant Program | FEMA | USFA | |
| FMANA | Fire Marshals Association of North America (see IFMA) | FEMA | |
| FMAP | Fire Management Assistance Program | FEMA | |
| FMAP | Flood Mitigation Assistance Program | FEMA | |
| FMC | Federal Maritime Commission | USCG | |
| FMC | Federal Management Circular | FEMA | |
| FMC | Federal Mobilization Center | FEMA | |
| FMC | Fully Mission Capable | FEMA | |
| FMCIMS | Flood Map Center Inventory Management System | FEMA | |
| FMCS | Federal Mediation and Conciliation Service | FEMA | OGC | |
| FMCSA | Federal Motor Carrier Safety Administration | TSA | CISA | |
| FMD | Foot and Mouth Disease | FEMA | |
| FMDC | Flood Map Distribution Center | FEMA | |
| FME | Federally Managed Exercise | FEMA | |
| FMH | Federal Meteorological Handbook | FEMA | |
| FmHA | Farmers Home Administration | FEMA | |
| FMHCSS | Federal Manufactured Home Construction and Safety Standards | FEMA | |
| FMLA | Family and Medical Leave Act | FEMA | |
| FMO | Fire Management Officer | FEMA | |
| FMP | Field Management Program | FEMA | |
| FMR | Fair Market Rental | FEMA | |
| FMS | Federal Medical Shelters | FEMA | CWMD | |
| FMS | Financial Management System | FEMA | |
| FMSIS | Flood Map Status Information Service | FEMA | |
| FMT | Field Monitoring Team | FEMA | |
| FMV | Fair Market Value | FEMA | |
| FMWC | Federal Multilingual Website Committee | USCIS | |
| FN | Foreign National | FEMA | |
| FNAMS | FEMA National Automated Message System | FEMA | |
| FNAPS | FEMA National Paging System | FEMA | |
| FNARS | FEMA National Radio System | FEMA | |
| FNF | Fixed Nuclear Facility | FEMA | |
| FNS | Food and Nutrition Services | FEMA | |
| FO | Field Office | FEMA | |
| FOB | Federal Office Building | FEMA | |
| FOBS | Field Observer | FEMA | |
| FOC | FEMA Operations Center | FEMA | |
| FOC | Forward Operations Center | FEMA | |
| FOC | Free of Charge | FEMA | |
| FOC | Full Operating Capability | FEMA | |
| FOD | Foreign Object Damage | FEMA | |
| FOF | Field Operating Facility | FEMA | |
| FOG | Field Operating Guide | FEMA | |
| FOG | Field Operation Guide | FEMA | |
| FOH | Federal Occupational Health | MGMT | |
| FOI | Functional Office Index | FEMA | |
| FOIA | Freedom of Information Act | FEMA | OGC | PRIV | |
| FONSI | Finding of No Significant Impact | FEMA | |
| FOP | Fugitive Operations Program | ICE | |
| FOP | Fraternal Order of Police | FEMA | |
| FORSCOM | Forces Command | FEMA | |
| FOS | Family of Services | FEMA | |
| FOS | Federal Operations Support | FEMA | |
| FOSA | Federal Operational/Operations Staging Area | FEMA | |
| FOSC | Federal On-Scene Coordinator/Commander | FEMA | |
| FOSET | finding of suitability [early transfer] | DHS | |
| FOSL | finding of suitability [lease] | DHS | |
| FOSS | Field Operating Site Setup | FEMA | |
| FOST | finding of suitability [transfer] | DHS | |
| FOUO | For official use only | DHS | |
| FOV | Field of View | FEMA | |
| FOX | fuel oxidizer explosive mixture | S&T | |
| FP | Fire Protection | FEMA | |
| FP | Force Protection | FEMA | |
| FP&S | Fire Prevention & Safety | FEMA | |
| FPA | Federal Preparedness Agency | FEMA | |
| FPBF | Fines, Penalties & Forfeiture | CBP | |
| FPC | Federal Power Commission | FEMA | |
| FPC | Federal Preparedness Circular | FEMA | |
| FPC | Federal Preparedness Coordinator | FEMA | |
| FPC | Final Planning Conference | FEMA | |
| FPCs | Federal Preparedness Coordinators | FEMA | |
| FPDL | Fire Protection Demonstration Lab | FEMA | |
| FPE | Fire Protection Engineering | FEMA | |
| FPEIS | Federal Programmatic Environmental Impact Statement | FEMA | |
| FPF | Federal Policy Fee | FEMA | |
| FPG | Federal Preparedness Guide | FEMA | |
| FPI | Floodplain Information Report | FEMA | |
| FPI | Foreign Person of Interest | FEMA | |
| FPMR | Federal Property Management Regulation | FEMA | |
| FPO | Federal Preservation Officer | FEMA | |
| FPO | Flood Potential Outlook | FEMA | |
| FPPS | Federal Personnel Payroll System | FEMA | |
| FPS | Federal Protective Service (ICE/FPS) | DHS | |
| FQI | Federal Quality Institute | FEMA | |
| FR | Field Reference | FEMA | |
| FR | Federal Register | USCG | OGC | |
| FRA | Federal Records Act | FEMA | |
| FRA | Federal Railroad Administration | TSA | CISA | |
| FRAC | First Responder Authorization Credential | FEMA | |
| FRATS | FEMA Recovery Action Tracking System | FEMA | |
| FRB | Federal Reserve Systems Board of Governors | DHS | |
| FRC | Fast Response Cutters | USCG | |
| FRC | Federal Regional Center | FEMA | |
| FRC | Federal Resource Coordinator | FEMA | |
| FRC | Federal Response Center | FEMA | |
| FRC | Federal Records Center | MGMT | |
| FRCA | Findings Requiring Corrective Action | FEMA | |
| FRCM | FEMA Regional Communications Manager | FEMA | |
| FRD | Formerly Restricted Data | FEMA | |
| FRERP | Federal Radiological Emergency Response Plan | FEMA | S&T | |
| FRESH | Fire, Rescue, Emergency, Safety, & Health | FEMA | |
| FRID | Flood Risk Directory | FEMA | |
| FRMAC | Federal Radiological Measurement and Assessment Center | CISA | S&T | |
| FRMAP | Federal Radiological Monitoring and Assessment Plan | CISA | S&T | |
| FRMT | Field Radiological Monitoring Team | FEMA | |
| FRN | Federal Reserve Note | USSS | |
| FRN | Federal Register Notice | FEMA | OGC | |
| FRN | FEMA Radio Network | FEMA | |
| FRO | Flood Response Office | FEMA | |
| FRP | facility response plan [oil discharge] | DHS | |
| FRP | Facility Response Plan | FEMA | |
| FRP | Federal Response Plan (see NRF) | FEMA | |
| FRPCC | Federal Radiological Preparedness Coordinating Committee | FEMA | |
| FRPG | Federal Response Planning Guidance | FEMA | |
| FRPI | First Responder Partnership Initiative | FEMA | |
| FRRATS | Federal Response and Recovery Automated Tracking System | FEMA | |
| FRRATS | FEMA Response & Recovery Applicant Tracking System | FEMA | |
| FRS | Federal Response Subcommittee | FEMA | |
| FRS | Federal Reserve System | CISA | |
| FRSA | Federal Railroad Safety Act | FEMA | |
| FRSD | First Responders and Small Departments | FEMA | |
| FRSGP | Freight Rail Security Grant Program | FEMA | |
| FRSSB | Facilities Radiological Safety and Safeguards Branch | FEMA | |
| FRTIB | Federal Retirement Thrift Investment Board | MGMT | |
| FRZ | Flight Restricted Zone | ICE | |
| FS | [United States] Forest Service [ESF-4] | FEMA | |
| FS | Feasibility Study | FEMA | |
| FSA | Flexible Spending Account | MGMT | |
| FSA | Farm Service Agency | FEMA | |
| FSA | FEMA/State Agreement | FEMA | |
| FSA | Fire Suppression Assistance | FEMA | |
| FSA | Forward Staging Areas | FEMA | |
| FSAR | Final Safety Analysis Report | FEMA | |
| FSB | Forward Support Base | FEMA | |
| FSC | Federal Support Center | FEMA | |
| FSC | FEMA Storage Center | FEMA | |
| FSC1 | Finance/Admin Section Chief | FEMA | |
| FSC2 | Finance/Admin Section Chief | FEMA | |
| FSD | Forensic Services Division | USSS | |
| FSD | Fire System Deficiency | FEMA | |
| FSD | Federal Security Director | TSA | S&T | |
| FSDO | Flight Service District Office | FEMA | |
| FSE | Full-Scale Exercise | FEMA | CISA | |
| FSG | Financial Services Group | FEMA | |
| FSH | Forest Service Handbook | FEMA | |
| FSIE | Fire Service Intelligence Enterprise | FEMA | |
| FSIS | Foreign Service Institute | I&A | |
| FSIS | Food Safety and Inspection Service | CISA | |
| FSIU | Field Support Intelligence Unit | FEMA | |
| FSL | Federal, State, Local | FEMA | CISA | |
| FSLC | Federal Senior Leadership Council | FEMA | |
| FSLIC | Federal Savings and Loan Insurance Corporation | FEMA | |
| FSM | Federated States of Micronesia | FEMA | |
| FSN | Federal Stock Number | FEMA | |
| FSN | FEMA Switched Network | FEMA | |
| FSO | Free Space Optics | FEMA | |
| FSR | Financial Status Report | FEMA | |
| FSS | Family Support Services | FEMA | |
| FSS | Federal Supply Service | FEMA | |
| FSSA | Flight School Security Awareness | TSA | |
| FSSC | Fleet Surveillance Support Command | ICE | |
| FSTC | Foreign Science Technology Center (United States Army) | FEMA | |
| FSTS | Federal Secure Telephone System | FEMA | |
| FSVS | FEMA Secure Video System | FEMA | |
| FSX | Full Scale Exercise | FEMA | |
| ft | foot/feet | FEMA | |
| FT | Full-Time | FEMA | |
| ft/min | feet per minute | FEMA | |
| ft3/min | cubic feet per minute | FEMA | |
| FTA | Federal Transit Administration | FEMA | TSA | |
| FTAA | Free Trade Area of the Americas | ICE | |
| FTC | Federal Training Coordinator | TSA | |
| FTC | Federal Trade Commission | DHS | |
| FTC | Field Team Coordinator | FEMA | |
| FTD | Federal Travel Directory | FEMA | |
| FTE | Full-Time Employees | FEMA | |
| FTE | Full-time Equivalent | FEMA | MGMT | OPA | |
| FTO | Foreign Terrorist Organizations | I&A | |
| FTP | File Transfer Protocol | I&A | MGMT | |
| FTS | Federal Technology Service | FEMA | |
| FTS | Forms Tracking System | FEMA | |
| FTS | Federal Telecommunications (or Telephone) System (or Service) | FEMA | MGMT | |
| FTSS | Federal Training Support Staff | TSA | |
| FTTTF | Foreign Terrorist Tracking Task Force | I&A | |
| FTX | Field Training Exercise | FEMA | |
| FTZ | Foreign Trade Zone | CBP | |
| FUM1 | Fire Use Manager 1 | FEMA | |
| FUM2 | Fire Use Manager 2 | FEMA | |
| FUNC | Functional | FEMA | |
| FW | Fire Weather | FEMA | |
| FWAN | FEMA Wide Area Network | FEMA | |
| FWBM | Fixed Wing Base Manager | FEMA | |
| FWCA | Fish and Wildlife Coordination Act | FEMA | |
| FWD | Forward | FEMA | |
| FWP | Federal Women’s Program | FEMA | |
| FWPCA | Federal Water Pollution Control Act | FEMA | |
| FWPT | Fixed Wing Parking Tender | FEMA | |
| FWS | United States Fish and Wildlife Service | FEMA | USCG | |
| FX | Functional Exercise | FEMA | |
| FY | Fiscal Year | DHS | |
| FYHSP | Future Years Homeland Security Program | MGMT | |
| FYI | For Your Information | FEMA | |
| FZ | Flood Zone | FEMA | |
| FZDC | Flood Zone Determination Company | FEMA | |
| G&T | Office of Grants and Training | FEMA | |
| GA | General Adjuster | FEMA | |
| GA/FBO | General Aviation/Fixed-Base Operations | FEMA | |
| GAAP | Generally Accepted Accounting Principles | FEMA | |
| GAAS | Generally Accepted Auditing Standards | FEMA | |
| GAAWG | General Aviation Airports Working Group | TSA | |
| GACC | Geographic Area Coordination Center | FEMA | |
| GACG | Geographic Area Coordinating Group | FEMA | |
| GADCOI | Global Air Domain Community of Interest | PLCY | |
| gal | gallon | FEMA | |
| GAL | Global Access List | MGMT | |
| GAMA | General Aviation Manufacturers Association | TSA | |
| GAN | Grant Adjustment Notice | FEMA | |
| GANTSEC | Greater Antilles Section | ICE | USCG | |
| GAO | General Accounting Office | FEMA | |
| GAO | Government Accountability Office | DHS | |
| GAR | Governor’s Authorized Representative | FEMA | |
| GARS | Global Area Reference System | FEMA | |
| GB | Gigabyte | FEMA | |
| GBL | Government/General Bill of Lading | FEMA | |
| GBPS | Gigabytes Per Second | FEMA | |
| GC | General Counsel (see also OGC) | FEMA | OGC | |
| GCC | Government Coordinating Council | FEMA | |
| GCCS | Global Command and Communications System | FEMA | |
| GCE | Government Cost Estimate | FEMA | |
| GCF | Ground Concentration Factor | FEMA | |
| GCO | Grant Coordinating Officer | FEMA | |
| GCOA | Gross Consequence of Attack | FEMA | |
| GCR | Gulf Coast Region | FEMA | |
| GCR | Gulf Coast Region, Recovery and Rebuilding of the | DHS | |
| GCS | Ground Control Station | FEMA | |
| GD&A | Grant Development and Administration | FEMA | |
| GDIN | Global Disaster Information Network | FEMA | |
| GDM | Geospatial Data Model | FEMA | |
| GDNP | Gross Domestic National Product | FEMA | |
| GDS | Geographic Display System | FEMA | |
| GDSS | Global Decision Support System | FEMA | |
| GDT | Ground Data Terminal | FEMA | |
| GE | General Emergency | FEMA | |
| Ge (Li) | Lithium Drifted Germanium | FEMA | |
| GEA | Geospatial Enterprise Architecture | FEMA | |
| GEIA | Government Electronic and Information Technology Association | CISA | |
| GEMA | Georgia Emergency Management Agency | FEMA | |
| GEMINI | Global Emergency Management Information Network Initiative | FEMA | |
| GEMS | Global Emergency Management System | FEMA | |
| GEOCC | Government Emergency Operations Coordination Center | FEMA | |
| GeoTIFF | Georeferenced Tagged Image File Format | FEMA | |
| GER | Global Emergency Response | FEMA | |
| GES | Global Enrollment System | CBP | ICE | USCIS | I&A | PLCY | PRIV | |
| GETA | Government Emerging Technology Alliance | FEMA | |
| GETS | Government Emergency Telecommunications Service | FEMA | CISA | |
| GFE | Government-Furnished Equipment | FEMA | |
| GFI | Government-Furnished Information | FEMA | |
| GFIP | Group Flood Insurance Policy | FEMA | |
| GFIRST | Government Forum of Incident Response and Security Teams | USSS | CISA | S&T | |
| GFM | Generic Financial Module (NEMIS) | FEMA | |
| GFM | Government-Furnished Material | FEMA | |
| GGI | Global Geospatial Intelligence | FEMA | |
| GGI&S | Global Geospatial Information and Services | FEMA | |
| GHAD | Geologic Hazard Abatement District | FEMA | |
| GHG | greenhouse gas | DHS | |
| GI | Geographic Information | FEMA | |
| GI | Ground Infantry | FEMA | |
| GIF | Graphical Image Format | DHS | |
| GIF | Graphics Interchange Format | FEMA | |
| GIG | Global Information Grid | I&A | |
| GIL | Grant-In-Lieu | FEMA | |
| GILS | Government Information Locator Service, | FEMA | |
| GIS | Geographic Information System(s) | FEMA | |
| GIS | Geospatial Information System | FEMA | |
| GISS | GIS Specialist | FEMA | |
| GISWG | Global Infrastructure and Standards Working Group | FEMA | |
| GIWG | Global Intelligence Working Group | FEMA | |
| GIWW | Gulf Intracoastal Waterway | FEMA | |
| GLD | General Law Division | OGC | |
| GLPAC | Great Lakes Pilotage Advisory Committee | USCG | |
| GLWRM | Great Lakes Wave Run-up Model | FEMA | |
| GM | Guidance Memorandum | FEMA | |
| G-M | Geiger-Mueller (radiation detector) | FEMA | |
| GMCOI | Global Maritime Community of Interest | PLCY | |
| GMDSS | Global Maritime Distress and Safety System | FEMA | |
| GMF | Government Master File | FEMA | |
| GML | Geographic Markup Language | FEMA | |
| GMO | Genetically Modified Organism | FEMA | |
| GMO | Geospatial Management Office | FEMA | |
| GMR | Graduated Mobilization Response | FEMA | |
| GMS | Grant Management Specialists | FEMA | |
| GMS | Grants Management System | FEMA | |
| GMSA | global maritime situational awareness | PLCY | |
| GMT | Greenwich Mean Time (aka: "ZULU Time") | FEMA | |
| GNDA | Global Nuclear Detection Architecture | CWMD | |
| GNIS | Geographic Names Information System | FEMA | |
| GOALS | Government On-Line Accounting Link System | FEMA | |
| GOES | Global Online Enrollment System | CBP | |
| GOGO | Government-Owned, Government-Operated | FEMA | |
| GOM | Gulf of Mexico | FEMA | |
| GOMEX | Gulf of Mexico | FEMA | |
| GOSC | Global Operations Security Center | FEMA | |
| GOTS | Government Off the Shelf | I&A | MGMT | |
| GOV | Government Owned Vehicle | FEMA | |
| GP | Grant Programs, Office of (FEMA/GP) | DHS | |
| GPCI | Geographical Physician Cost Index | FEMA | |
| GPD | Grant Programs Directorate | FEMA | |
| GPEA | Government Paperwork Elimination Act | FEMA | |
| GPL | General Population Level | FEMA | |
| GPL | General Population Limit | FEMA | |
| GPLD | Government Property Lost or Damaged | FEMA | |
| GPM | gallons per minute | FEMA | |
| GPMRC | Global Patient Movement Requirements Center | FEMA | |
| GPO | Government Printing Office | FEMA | MGMT | OPA | |
| GPRA | Government Performance and Results Act | FEMA | |
| GPS | Global Positioning System | FEMA | USCG | S&T | |
| GRASS | Geographic Resources Analysis and Support System | FEMA | |
| GRP | Grant Reporting Portal | FEMA | |
| GRS | general record schedule | MGMT | |
| GRS | Geodetic Reference System | FEMA | |
| GS | General Schedule | MGMT | |
| GS | Geological Survey | FEMA | |
| GS | Geo-Stationary | FEMA | |
| GS | Ground Support | FEMA | |
| GSA | General Services Administration | DHS | |
| GSAAR | General Services Administration Acquisition Regulation | FEMA | |
| GSACR | GSA Communications Representative | FEMA | |
| GSB | GIS Solutions Branch | FEMA | |
| GSE | Government-Sponsored Enterprise | FEMA | |
| GSSO | Government Special Access Program Security Officer | MGMT | |
| GST | Ground Support Team | FEMA | |
| GSUL | Ground Support Unit Leader | FEMA | |
| GTA | Government Travel Account | FEMA | |
| GTA | Government Travel Authorization | FEMA | |
| GTC | Government Travel Card | FEMA | |
| GTM | Government Technical Monitor | FEMA | |
| GTR | Government Technical Representative | FEMA | |
| GTR | Government Transportation Request | FEMA | |
| GTS | Global Telecommunications System | FEMA | |
| GUI | Geographical User Interface | FEMA | |
| GUI | Graphical User Interface | I&A | MGMT | |
| GUIRR | Government-University-Industry Research Roundtable | S&T | |
| GVO | Green Vinyl Overboot | FEMA | |
| GWA | Government Wide Accounting | FEMA | |
| GWAC | Government-wide Acquisition Contract | I&A | MGMT | |
| GZ | Ground Zero | FEMA | |
| H&H | Hydraulics and Hydrology | FEMA | |
| H&H | Hydrologic and Hydraulic (Analyses) | FEMA | |
| HA | Housing Assistance | FEMA | |
| HAB | Hostile Action Based | FEMA | |
| HADT | Hawaiian Daylight Time (GMT - 9) | FEMA | |
| HAG | Highest Adjacent Ground [grade] | FEMA | |
| HALE | High Altitude Long Endurance (see also MALE) | USCG | |
| HAMMER | Hazardous Materials Management and Emergency Response | FEMA | |
| HAMMER | Hazardous Agent Mitigation and Medical Emergency Response | USSS | S&T | |
| HAN | Health Alert Network | FEMA | |
| HAP | hazardous air pollutant | DHS | |
| HAP | Hazard Abatement Plan | FEMA | |
| HARN | High Accuracy Reference Network | FEMA | |
| HARTline | Hillsborough Area Regional Transit Authority (Florida) | FEMA | |
| HAS | Homeland Security Act [of 2002] | DHS | |
| HASP | Health and Safety Plan | FEMA | |
| HAST | Hawaiian Standard Time (GMT - 10) | FEMA | |
| HAST | Humanitarian Assistance Survey Team | FEMA | |
| HAWAS | Hawaiian Warning System | FEMA | |
| HAZCAT | Hazard Categorizing | FEMA | |
| HAZCOM | Hazard Communication | FEMA | |
| HAZMAT | Hazardous Material(s) | FEMA | S&T | PLCY | |
| HAZMIN | Hazard Minimization | FEMA | |
| HAZMIT | Hazard Mitigation | FEMA | |
| HAZUS | Hazards United States | FEMA | CISA | |
| HAZUS-MH | Hazards - United States (Multi-Hazard) | FEMA | |
| HAZWOPER | Hazardous Waste Operation and Emergency Response | FEMA | |
| HB | Health Benefit | FEMA | |
| HBCU | Historically Black College and Universities | S&T | |
| HBX | High-Blast Explosive | FEMA | |
| HC | Human Capital | FEMA | |
| HCA | High Consequence Area | FEMA | |
| HCC | Homeland Security Intelligence Council Coordinating Committee | I&A | |
| HCF | Height Correction Factor | FEMA | |
| HCFA | Health Care Financing Administration | FEMA | |
| HCFC | hydro-chlorofluorocarbons | DHS | |
| HCFSA | Health Care Flexible Spending Account | FEMA | |
| HCIB | Human Capital Investment Branch | FEMA | |
| HCO | see OCHCO | MGMT | |
| HCOP | Human Capital Operational Plan | FEMA | |
| HCP | health care provider | DHS | |
| HCQC | Health Care Quality Committee | MGMT | |
| HCTS | Hazardous Cargo Transportation Security | USCG | |
| HD | Hurricane Day | FEMA | |
| Hdbks | Handbooks | FEMA | |
| HDD | Heating Degree Days | FEMA | |
| HDER | Homeland Defense Equipment Reuse | FEMA | |
| HDP | Hurricane Destruction Potential | FEMA | |
| HDTC | Homeland Defense Technology Center | FEMA | |
| HE | High Explosive | FEMA | |
| HEAR | Hospital Emergency Administrative Radio | FEMA | |
| HEB1 | Helibase Manager (4+) | FEMA | |
| HEB2 | Helibase Manager (1-3) | FEMA | |
| HEC | Hydrologic Engineering Center | FEMA | |
| HECM | Helicopter Crewmember | FEMA | |
| HEICS | Hospital Emergency Incident Command System | FEMA | |
| HELB | Helicopter Boss | FEMA | |
| HELM | Helicopter Manager | FEMA | |
| HELP | Health Emergencies in Large Populations | FEMA | |
| HEMP | High Altitude Electromagnetic Pulse | FEMA | |
| HEOC | Hospital Emergency Operations Center (medical) | FEMA | |
| HEPA | High Efficiency Particulate Air (as in filters) | FEMA | |
| HERN | Hospital Emergency Radio Network | FEMA | |
| HERO | Hazards of Electromagnetic Radiation to Ordnance | FEMA | |
| HERS | Helicopter Rappel Spotter | FEMA | |
| HERT | Hospital Emergency Response Team | FEMA | |
| HES | Hurricane Evacuation Study | FEMA | |
| HESM | Helispot Manager | FEMA | |
| HET | Headquarters Emergency Transportation | FEMA | |
| HETA | Homeland Environment and Threat Analysis Division | I&A | |
| HEU | Highly Enriched Uranium | FEMA | |
| HEW | United States Department of Health, Education and Welfare | FEMA | |
| HF | High Frequency | FEMA | |
| HF | hydrogen fluoride | FEMA | |
| HF/SSB | High Frequency / Single Side Band | FEMA | |
| HFC | hydro-fluorocarbons | DHS | |
| HFD | Human Factors Division (S&T/HFD) | DHS | |
| HFE | human factors engineering | MGMT | |
| HFSC | Home Fire Sprinkler Coalition | FEMA | |
| HgI2 | mercuric iodide | FEMA | |
| HHA | High Hazard Area | FEMA | |
| HHC | Headquarters and Headquarters Company | FEMA | |
| HHD | Headquarters and Headquarters Detachment | FEMA | |
| HHMD | Hand-Held Metal Detector | TSA | |
| HHS | United States Department of Health and Human Services | DHS | |
| HHS SERT | Health and Human Services Secretary’s Emergency Response Teams | FEMA | |
| HHSEOC | Health and Human Services Emergency Operations Center | FEMA | |
| HHW | Household Hazardous Wastes | FEMA | |
| HIC | Hydrologist-in-Charge | FEMA | |
| HIDTA | High Intensity Drug Trafficking Area | ICE | |
| HIP | Housing Improvement Program | FEMA | |
| HIPAA | Health Insurance Portability and Accountability Act | PRIV | |
| HIPDB | Healthcare Integrity & Protection Data Bank | FEMA | |
| HIPS | Homeland Innovative Prototypical Solutions | S&T | |
| HIRA | Hazard Identification and Risk Assessment | CISA | |
| HITRAC | Homeland Infrastructure Threat and Risk Analysis Center | CISA | S&T | I&A | |
| HITRON | Helicopter Interdiction Tactical Squadron | USCG | |
| HITS | High Impact Technology Solutions | S&T | |
| HL | Help Line | FEMA | |
| HL | Hotline | FEMA | |
| HLCO | Helicopter Coordinator | FEMA | |
| HLD | Homeland Defense | S&T | MGMT | |
| HLDBU | Homeland Defense Budget Unit | FEMA | |
| HLS | Hurricane Local Statement | FEMA | |
| HLS | Homeland Security | S&T | MGMT | |
| HLS-CAM | Homeland Security Comprehensive Assessment Model | FEMA | |
| HLSEA | DHS Homeland Security Enterprise Architecture | MGMT | |
| HLSEA | Homeland Security Enterprise Architecture | S&T | MGMT | |
| HLT | Hurricane Liaison Team | FEMA | |
| HLW | High-Level Waste | FEMA | |
| HM | Hazard Mitigation | FEMA | |
| HM | Hazardous Materials | FEMA | |
| HMA | Hazardous Materials Accident | FEMA | |
| HMAC | Hazardous Materials Advisory Council | FEMA | |
| HMC | Hazard Mitigation Coordinator | FEMA | |
| HME | Hazardous Materials Endorsement | TSA | |
| HME | Health, Medical, and Environmental | FEMA | |
| HME | homemade explosive | S&T | |
| HMEP | Hazardous Materials Emergency Preparedness | FEMA | |
| HMER | Hazardous Material Emergency Response | FEMA | |
| HMG | Hazard Mitigation Grant | FEMA | |
| HMGP | Hazardous Mitigation Grants Program | FEMA | |
| HMIX | Hazardous Materials Information Exchange | FEMA | |
| HMMWV | Highly Mobile Multipurpose Wheeled Vehicle | FEMA | |
| HMRT | Hazardous Materials Response Team | FEMA | |
| HMRU | Hazardous Materials Response Unit (FBI) | FEMA | |
| HMST | Hazard Mitigation Survey Team | FEMA | |
| HMTA | Hazardous Materials Transportation Act | FEMA | |
| HMTAP | Hazard Mitigation Technical Assistance Plan | FEMA | |
| HMTAP | Hazard Mitigation Technical Assistance Program | FEMA | |
| HMTUSA | Hazardous Materials Transportation Uniform Safety Act | FEMA | |
| HNAT | Human Needs Assessment Team | FEMA | |
| HNT | Hostage Negotiation Team | FEMA | |
| HOB | Height of Burst | FEMA | |
| HOH | Head Of Household | FEMA | |
| HOO | [NRC] Headquarters Operations Officer | FEMA | |
| HOPWA | Housing Opportunities for Persons With AIDS | FEMA | |
| HOTMAC | High Order Turbulence Model for Atmospheric Circulation | FEMA | |
| HP | Health Physicist | FEMA | |
| HP | Historic Preservation | FEMA | |
| HP | Horsepower | FEMA | |
| HP | Hurricane Program | FEMA | |
| HPAC | Hazard Prediction and Assessment Capability | FEMA | |
| HPC | High Probability of Completion | FEMA | |
| HPC | Hydrometeorological Prediction Center | FEMA | |
| HPCC | High-performance computing and communications | FEMA | |
| HPPM | Health Promotion and Preventive Medicine [United States Army Center for] | S&T | CWMD | |
| HPRDS | Human Portable Radiation Detection System | CWMD | |
| HPRP | Home Protection Roofing Program | FEMA | |
| HPSI | High Pressure Safety Injection | FEMA | |
| HPT | Health Physics Technician | FEMA | |
| HPXe | high-pressure xenon | FEMA | |
| HQ | Headquarters | FEMA | |
| HQAMC | Headquarters Air Mobility Command | FEMA | |
| HQDA | Headquarters, Department of the Army | FEMA | |
| HQUSACE | Headquarters, United States Army Corps of Engineers | FEMA | |
| HR | Home Repair | FEMA | |
| hr | hour | FEMA | |
| HR | House of Representatives | FEMA | |
| HR | Human Resources | FEMA | |
| HRA | health risk assessment | MGMT | |
| HRAP | Helicopter Rappeller | FEMA | |
| HRCQ | Highway Route Controlled Quantity | FEMA | |
| HRD | Human Resources Division | FEMA | |
| HRDI | High Resolution Doppler Imager | FEMA | |
| HRLD | Human Rights Law Division | ICE | |
| HRMS | Human Resources Management System | MGMT | |
| HROA | human resources operations audit | MGMT | |
| HRPT | High Resolution Picture Transmission | FEMA | |
| HRS | Hours | FEMA | |
| HRSA | Health Resources & Services Administration | CISA | |
| HRSAN | Health Resources Services Administration (Federal) | FEMA | |
| HRSP | Human Resource Specialist | FEMA | |
| HRT | Hostage Rescue Team | FEMA | |
| HRT | Hydraulic Rescue Tool | FEMA | |
| HRV | Human Rights Violator/Violation | ICE | |
| HS | Homeland Security | FEMA | |
| HS | Human Services | FEMA | |
| HSA | Homeland Security Advisor | FEMA | |
| HSAC | Homeland Security Advisory Committees (PLCY/HSAC) | DHS | |
| HSAC | Homeland Security Advisory Council | FEMA | |
| HSAP | Homeland Security Assistance Program | FEMA | |
| HSARPA | Homeland Security Advanced Research Project Agency | S&T | |
| HSAS | Homeland Security Advisory System | DHS | |
| HSAT | Homeland Security Action Team | FEMA | |
| HSC | Homeland Security Center | FEMA | |
| HSC | Homeland Security Council (formerly OHS) | FEMA | |
| HSC | Health Service Command | FEMA | |
| HSCG | Homeland Security Coordination Group | FEMA | |
| HSD | Human Services Department | FEMA | |
| HSDF | Homeland Security Dialogue Forum | CISA | |
| HSDN | High Seas Drift Nets | USCG | |
| HSDN | Homeland Secure Data Network | I&A | MGMT | |
| HSEC SINs | Homeland Security Standing Information Needs | I&A | |
| HSEEP | Homeland Security Exercise and Evaluation Program | CISA | |
| HSEES | Hazardous Substances Emergency Event Surveillance (Program) | FEMA | |
| HSELP | Homeland Security Executive Leadership Program | FEMA | |
| HSGP | Homeland Security Grant Program | FEMA | |
| HSI | human systems integration | MGMT | |
| HSI | Homeland Security Institute | FEMA | |
| HSIA | Homeland Security Industry Alliance | PLCY | |
| HSIC | Homeland Security Intelligence Council | I&A | |
| HSIN | Homeland Security Information Network | I&A | |
| HSIN | Homeland Security Information Network (formerly JRIES) | CISA | I&A | OPS | PLCY | |
| HSIN Intel | Homeland Security Information Network Intelligence Community of Interest | I&A | |
| HSIPF | homeland security intelligence priorities framework | I&A | |
| HSIPP | Homeland Security Integrated Planning Process | CISA | |
| HSIR | Homeland Security Intelligence Report | I&A | |
| HSL | Health and Safety Laboratory | FEMA | |
| HSLA | Homeland Security Leadership Alliance | FEMA | |
| HSLD | Historic Shoreline Location Database | FEMA | |
| HSLRB | Homeland Security Labor Board | DHS | |
| HSNTP | Homeland Security National Training Program | FEMA | |
| HSO | Human Services Officer | FEMA | |
| HSOC | Homeland Security Operations Center [see new name under NOC] | DHS | |
| HSOMB | Homeland Security Operations Morning Brief | FEMA | |
| HSPCD | Historic Shoreline Positional Change Database | FEMA | |
| HSPD | Homeland Security Presidential Directive | DHS | FEMA | CISA | S&T | I&A | |
| HSPI | Homeland Security Policy Institute | FEMA | |
| HSPO | (DHS) Human Subjects Protection Official | FEMA | |
| HSPTAP | Homeland Security Preparedness Technical Assistance Program | FEMA | |
| HSS | Health Service Support | FEMA | |
| HSS | Hyperspectral Sensor System | FEMA | |
| HSSP | Homeland Security Standards Panel | PLCY | |
| HSSTAC | Homeland Security Science and Technology Advisory Committee | FEMA | |
| HSTA | Homeland Security Threat Assessment | FEMA | |
| HSTF | Homeland Security Task Force | FEMA | |
| HSTF-SE | Homeland Security Task Force - Southeast | DHS | |
| HSTS | Homeland Security Training System | FEMA | |
| HSTTIG | Homeland Security Terrorist Threat Intelligence Group | I&A | |
| HSUS | The Humane Society of the United States | FEMA | |
| HTCI | High-Tech Crime Investigation | FEMA | |
| HTGR | High-Temperature Gas-Cooled Reactor | FEMA | |
| HTMG | Helitorch Manager | FEMA | |
| HTML | Hypertext Markup Language | DHS | |
| HTMM | Helitorch Mixmaster | FEMA | |
| HTPT | Helitorch Parking Tender | FEMA | |
| HTRT | Hiring & Transition Response Team | FEMA | |
| HTS | High Temperature Superconductor | S&T | |
| HTTP | Hypertext Transfer Protocol | DHS | |
| HTUA | High Threat Urban Area | TSA | CISA | |
| HUB | Historically Underutilized Business | FEMA | |
| HUBZone | Historically Under-Utilized Business Zone | FEMA | |
| HUD | United States Department of Housing and Urban Development | DHS | |
| HUG | HAZUS User Group | FEMA | |
| HUMINT | Human Intelligence | FEMA | |
| HURCON | Hurricane Condition | FEMA | |
| HUREVAC | Hurricane Evacuation | FEMA | |
| HV/HR | High value/High risk | FEMA | |
| HVA | Hazard Vulnerability Analysis | FEMA | |
| HVAC | Heat, Ventilating, and Air Conditioning | FEMA | MGMT | |
| HVE | homegrown violent extremist | I&A | |
| HVSACO | handle via special access channels only material | MGMT | |
| HVT | High Value Target | CISA | |
| HWL | High Water Line | FEMA | |
| HWM | High Water Mark | FEMA | |
| HWP | Highway Watch Program | FEMA | |
| HWR | Heavy Water Reactor | FEMA | |
| Hz | Hertz (cycle per second) | FEMA | |
| I | Individual/Family | FEMA | |
| I | Iodine Exposure Intensity | FEMA | |
| I&A | Intelligence and Analysis | DHS | |
| I&A | Office of Intelligence and Analysis | MGMT | |
| I&P or I/P | Information and Planning | FEMA | |
| I&W | Indication and Warning | FEMA | CISA | |
| I/O | Input/Output | FEMA | |
| IA | In and around | FEMA | |
| IA | Individual Assistance | FEMA | |
| IA | Information Assurance | FEMA | |
| IA | Initial attack | FEMA | |
| IA | Internal Affairs | FEMA | |
| IA | Inter-agency | DHS | |
| IA | International Affairs (see OIA) | DHS | |
| IA (see I&A) | Information Analysis (former DHS Subcomponent) | I&A | |
| IAA | Interagency Agreement | FEMA | |
| IAAE | International Association of Airport Executives | TSA | PLCY | |
| IAAI | International Association of Arson Investigators | FEMA | |
| IAASP | International Association of Airport and Seaport Police | CBP | TSA | USCG | |
| IAB | Interagency Board | FEMA | |
| IABPFF | International Association of Black Professional Fire Fighters | FEMA | |
| IAC | Incident Action Council, formerly IIMG (NRP-CIS) | FEMA | |
| IAC | Incident Advisory Council | FEMA | |
| IAC | Information Analysis Center (DOD) | FEMA | |
| IAC | International Aviation Club | CBP | |
| IACET | International Association for Continuing Education and Training | FEMA | |
| IACG | Interagency Airspace Coordination Guide | FEMA | |
| IACNDR | Inter-American Committee for Natural Disaster Reduction | FEMA | |
| IACP | International Association of Chiefs of Police | FEMA | CISA | OPA | |
| IACUC | Institutional Animal Care and Use Committee | S&T | |
| IAD | Interagency Programs Division (S&T/IAD) | DHS | |
| IADP | Initial Attack Dispatcher | FEMA | |
| IAE | Integrated Acquisition Environment (eGovernment Initiative) | FEMA | |
| IAEA | International Atomic Energy Agency | CISA | S&T | |
| IAEGC | Interagency Electronic Grants Committee (Federal) | FEMA | |
| IAEM | International Association of Emergency Managers | FEMA | CISA | |
| IAFC | International Association of Fire Chiefs | FEMA | CISA | S&T | |
| IAFF | International Association of Fire Fighters | FEMA | |
| IAFIS | Integrated Automated Fingerprint Identification System | CBP | USCG | S&T | PLCY | |
| IAFPA | International Aviation Fire Protection Association | FEMA | |
| IAG | Interagency Advisory Group | FEMA | |
| IAHFF | International Association of Hispanic Firefighters | FEMA | |
| IAI | International Association for Identifications | USSS | |
| IAIP | Information Analysis and Infrastructure Protection (split into PREP and I&A October 2005) | DHS | |
| IALEIA | International Association of Law Enforcement Intelligence Analysts | FEMA | |
| IAM | Identity and Access Management | FEMA | |
| IAM | Incident Activity Manager | FEMA | |
| IANA | Intermodal Association of North America | CISA | |
| IAO | Individual Assistance Officer | FEMA | |
| IAP | Immigration Advisory Program | CBP | |
| IAP | Incident Action Plan | FEMA | |
| IAPH | International Association of Ports and Harbors | USCG | |
| IAPP | International Association of Privacy Professionals | CISA | PRIV | |
| IAQ | Indoor Air Quality | FEMA | |
| IARLJ | International Association of Refugee Law Judges | USCIS | |
| IARR | Interagency Resource Representative | FEMA | |
| IAS | International Assistance System | FEMA | |
| IASE | Information Assurance Support Environment (Dodd IA Portal) | FEMA | |
| IASIR | International Association of Security and Investigative Regulators | ICE | USCIS | |
| IASIU | International Association of Special Investigation Units | FEMA | |
| IAT | Incident Assessment Team | FEMA | |
| IATA | International Air Transport Association | TSA | |
| IATBOG | Interagency Air Tankers Base Operations Guide | FEMA | |
| IAVA | Information Assurance Vulnerability Alert | FEMA | |
| IAW | In accordance with | DHS | |
| IAWF | International Association of Wildland Fire | FEMA | |
| IBA | Incident Business Advisor | FEMA | |
| IBA1 | Incident Business Advisor Type 1 | FEMA | |
| IBA2 | Incident Business Advisor Type 2 | FEMA | |
| IBA3 | Incident Business Advisor Type 3 | FEMA | |
| IBAD | Interim Biological Agent Detector | FEMA | |
| IBC | Institutional Biosafety Committee | CWMD | |
| IBC | International Broadcast Center | FEMA | |
| IBC | International Building Code | FEMA | |
| IBD | Improvised Biological Device | FEMA | |
| IBDS | Integrated Biological Detection System | FEMA | |
| IBET | Integrated Border Enforcement Team | CBP | |
| IBHS | Institute for Business and Home Safety | FEMA | |
| IBIS | Interagency Border Inspection Services | FEMA | |
| IBIS | Interagency Border Inspection System | CBP | USCIS | PLCY | PRIV | |
| IBPAP | International Business Practices Advisory Panel | S&T | |
| IBS | Integrated Baseline System | FEMA | |
| IBSGP | Intercity Bus Security Grant Program | FEMA | |
| IBT | International Brotherhood of Teamsters | TSA | |
| IBWA | International Bottled Water Association | FEMA | |
| IC | Incident Command/Commander | FEMA | |
| IC | Information Collection | FEMA | |
| IC | Intelligence Community | DHS | I&A | |
| IC&V | Intelligent Collaboration and Visualization | FEMA | |
| ICAF | Industrial College of the Armed Forces | FEMA | |
| ICAHST | Interagency Center for Applied Homeland Security Technology | FEMA | |
| ICAO | International Civil Aviation Organization | CBP | TSA | CISA | |
| ICAP | Incident Communications Action Plan | FEMA | |
| ICAT | DHS Intelligence Crisis Action Team | I&A | |
| ICAV | Infrastructure Critical Asset Viewer | FEMA | |
| ICBM | Intercontinental Ballistic Missile | FEMA | |
| ICC | Incident Command Center | FEMA | |
| ICC | Increased Cost of Compliance | FEMA | |
| ICC | Information Control Cell | FEMA | |
| ICC | Intelligence Control Center | FEMA | I&A | |
| ICC | Interagency Coordination Council | CWMD | |
| ICC | International Code Council | FEMA | |
| ICCB | Intergovernmental Consultation and Coordination Board | FEMA | |
| ICCOH | Interagency Coordinating Committee On Hurricanes | FEMA | |
| ICCT | Incident Community Coordination Team | FEMA | |
| ICD | Improvised Chemical Device | CISA | |
| ICD | Institute of Chemical Defense | CISA | |
| ICD | Infrastructure Coordination Division | CISA | |
| ICDR | Interagency Committee on Disability Research | CRCL | I&A | |
| ICE | Immigration and Customs Enforcement, United States (formerly Bureau of) | DHS | |
| ICE | Interoperable Communications Equipment | FEMA | |
| ICE | U.S. Immigration and Customs Enforcement | MGMT | |
| ICE | United States Immigration and Customs Enforcement | MGMT | |
| ICEP | Incident Communications Emergency Plan | FEMA | |
| ICEPP | Incident Communications Emergency Policy and Procedures | FEMA | |
| ICER | Incident Communications Emergency Reference | PLCY | |
| ICF | Incident Command Facility | FEMA | |
| ICF | Insulating Concrete Forms | FEMA | |
| ICGP | Interoperable Communications Grant Program | FEMA | |
| ICHRO | Incident Command for High-rise Operations | FEMA | |
| ICIMPP | Integrated Civilian Industrial Mobilization Planning Process | FEMA | |
| ICISF | International Critical Incident Stress Foundation | FEMA | |
| ICITAP | International Criminal Investigative Training Assistance Program | FLETC | |
| ICLN | Integrated Consortium of Laboratory Networks | CISA | |
| ICMA | International City/County Management Association | FEMA | |
| ICML | Intelligence Community Markup Language | FEMA | |
| ICMOP | Integrated CONUS Medical Operations Plan | FEMA | |
| ICMSSR | Interdepartmental Committee for Meteorological Services and Supporting Research | FEMA | |
| ICODS | Interagency Committee on Dam Safety | FEMA | |
| ICP | Incident Command Post | FEMA | |
| ICP | Information Collection Plan | FEMA | |
| ICP | Integrated Cargo Processing | CBP | |
| ICPACC | Incident Communications Public Affairs Coordination Committee | FEMA | CISA | OPA | |
| ICPAE | Interagency Committee on Public Affairs in Emergencies | FEMA | OPA | |
| ICPO | (see INTERPOL) | ICE | |
| ICPS | Integrated Card Production System | USCIS | |
| ICR | Information Collection Request | FEMA | |
| ICRC | International Committee of the Red Cross | FEMA | |
| ICRI | Incident Commander Radio Interface | FEMA | |
| ICRP | International Commission on Radiological Protection | FEMA | S&T | CWMD | |
| ICS | Incident Command System | FEMA | |
| ICS | Initial Contingency Staff | FEMA | |
| ICSA | ICS Advisor | FEMA | |
| ICSC | International Cargo Security Council | CBP | |
| ICSCI | Incident Command for Structural Collapse Incidents | FEMA | |
| ICSSC | Interagency Committee on Seismic Safety in Construction | FEMA | |
| ICT | Incident Command Team | FEMA | |
| ICT1 | Incident Commander Type 1 | FEMA | |
| ICT2 | Incident Commander Type 2 | FEMA | |
| ICT3 | Incident Commander Type 3 | FEMA | |
| ICT4 | Incident Commander Type 4 | FEMA | |
| ICT5 | Incident Commander Type 5 | FEMA | |
| ICTAP | Interoperable Communications Technical Assistance Program | FEMA | |
| ICTOA | International Counter-Terrorism Officers Association | FEMA | |
| ICU | Incident Crisis Unit | FEMA | |
| ICU | Information Coordination Unit | FEMA | |
| ICU | Intensive Care Unit | FEMA | |
| ICWW | Intracoastal Waterway | FEMA | |
| ID | Identification credentials | CBP | TSA | |
| ID | Infectious Disease | FEMA | CISA | S&T | CWMD | |
| IDE | Initial Damage Estimate | FEMA | |
| IDE | Intrusion Detection Equipment [see IDS] | MGMT | |
| IDEC | International Drug Enforcement Conference | ICE | |
| IDEM | Iowa Department of Emergency Management | FEMA | |
| IDENT | Automated Biometric Identification System | CBP | CISA | I&A | PLCY | PRIV | |
| IDEX | Image Data Exploitation (System) | FEMA | |
| IDGA | Institute for Defense and Government Advancement | TSA | |
| IDIQ | Indefinite Delivery, Indefinite Quantity | FEMA | |
| IDLH | Immediate Danger to Life and/or Health | FEMA | |
| IDP | Imagery-Derived Product | FEMA | |
| IDPP | Infectious Disease Prevention Program | FEMA | |
| IDR | Institute for Disaster Research | FEMA | |
| IDS | Integrated Deepwater System | USCG | |
| IDS | Information Display System | FEMA | |
| IDS | Institute for Discrete Sciences | FEMA | |
| IDS | International District Station | FEMA | |
| IDS | Intrusion Detection System | TSA | I&A | |
| ID-WSF | Identity Web Services Framework | FEMA | |
| IE | Initial Elevation (Line) | FEMA | |
| IEA | Immigration Enforcement Agent | ICE | |
| IEA | International Energy Agency | FEMA | |
| IEC | Integrated Exploitation Capability | FEMA | |
| IEC | InterExchange Carrier | FEMA | |
| IECGP | Interoperable Emergency Communications Grant Program | FEMA | |
| IED | Incendiary Explosive Device | TSA | |
| IED | In-line Explosive Detection | TSA | |
| IED | Improvised Explosive Device | TSA | CISA | S&T | |
| IEEE | Institute of Electrical and Electronics Engineers | S&T | |
| IEISS | Interdependent Energy Infrastructure Simulation System | CISA | |
| IEMA | Illinois Emergency Management Agency | FEMA | |
| IEMC | Integrated Emergency Management Course | FEMA | |
| IEMG | International Emergency Management Group | FEMA | |
| IEMIS | Integrated Emergency Management Information System | FEMA | |
| IEMS | Integrated Emergency Management System | FEMA | |
| IEP | Ingestion Exposure Pathway | FEMA | |
| IEPD | Information Exchange Package Documentation | FEMA | |
| IES | Industry Executive Subcommittee | FEMA | |
| IETF | Internet Engineering Task Force | FEMA | |
| IETM | Interactive Electronic Technical Manual | FEMA | |
| IEVS | Income Eligibility Verification System | FEMA | |
| IF | Inland Fetch (Line) | FEMA | |
| IFALPA | International Federation of Airline Pilots Association | TSA | |
| IFB | Invitation for Bid | FEMA | |
| IFC | Intelligence Fusion Cell | FEMA | |
| IFC | internal fund code | MGMT | |
| IFC | internal fund code [financial] | MGMT | |
| IFE | In-flight Emergency | FEMA | |
| IFERWG | Industrial Fire & Emergency Response Working Group | FEMA | |
| IFERWG | International Fire & Emergency Response Working Group | FEMA | |
| IFG | Individual and Family Grant | FEMA | |
| IFGP | Individual and Family Grant Program | FEMA | |
| IFLOWS | Integrated Flood Observing and Warning System | FEMA | |
| IFMA | International Fire Marshals Association (formerly FMANA) | FEMA | |
| IFMIS | Integrated Financial Management Information System | FEMA | MGMT | |
| IFPA | Institute for Foreign Policy Analysis, Inc. | CBP | USCG | |
| IFR | Interim Final Rule | OGC | |
| IFR | Instrument Flight Rules | FEMA | |
| IFSAC | International Fire Service Accreditation Congress | FEMA | |
| IFSAR | Interferometric Synthetic Aperture Radar | FEMA | |
| IFSP | Integrated Federal Support Plan | OPS | |
| IFSTA | International Fire Service Training Association | FEMA | |
| IFTP | Internet Forensic Training Program | FLETC | |
| IG | Inspector General (see also OIG) | FEMA | OGC | |
| IG | Instructor Guide | FEMA | |
| IGA | Intergovernmental Affairs | DHS | |
| IGCE | independent government cost estimate | S&T | |
| IGD | Infrastructure and Geophysical Division (S&T/IGD) | DHS | |
| IGE | Independent Government Estimate | FEMA | |
| IGES | Initial Graphics Exchange Specification | FEMA | |
| IGP | Intergovernmental Programs, Office of (NPPD/IGP) | DHS | |
| IGPT | Interagency Geospatial Preparedness Team | FEMA | |
| IGRP | Interior Gateway Routing Protocol | FEMA | |
| IGSA | Inter-Governmental Service Agreement | FEMA | |
| IH | Industrial Hygiene | FEMA | |
| IH | Industrial Hygienist | FEMA | |
| IH | Inhalation | FEMA | |
| IH | Intense Hurricane | FEMA | |
| IHC | Interagency Hotshot Crew | FEMA | |
| IHC | International Hurricane Center | FEMA | |
| IHD | Intense Hurricane Day | FEMA | |
| IHE | Insensitive High Explosive | FEMA | |
| IHMT | Interagency Hazard Mitigation Team | FEMA | |
| IHOG | Interagency Helicopter Operation Guide | FEMA | |
| IHP | Individual and Households Program | FEMA | |
| IHS | Indian Health Service | FEMA | |
| IHSS | Institute for Homeland Security Solutions | S&T | |
| IIBMH | Interagency Incident Business Management Handbook | FEMA | |
| IIC | Interagency Intelligence Cell | FEMA | |
| IIC | Investigator in Charge | FEMA | |
| IICRC | Institute of Inspection Cleaning and Restoration Certification | FEMA | |
| IICT | Interagency Intelligence Committee on Terrorism | CISA | I&A | |
| IIFC | Information/Intelligence Fusion Center | FEMA | |
| III | Interstate Identification Index | TSA | |
| IIMG | Interagency Incident Management Group | FEMA | CISA | |
| IIMS | Integrated Information Management System | FEMA | |
| IIMT | Interagency Incident Management Team | FEMA | |
| IIOM | Install, Integrate, Operate, and Maintain | FEMA | |
| IIPLR | Insurance Institute for Property Loss Reduction | FEMA | |
| IIPO | Information Integration Program Office | FEMA | |
| IIRIRA | Illegal Immigration Reform and Immigrant Responsibility Act | USCIS | OGC | |
| IIT | Incident Investigation Team | FEMA | |
| IITCT | Interviewing and Interrogation Techniques for Courtroom Testimony | FEMA | |
| IITP | Internet Investigations Training Program | FLETC | |
| IJIS | Integrated Justice Information System | FEMA | |
| ILE | Installations, Logistics & Environment | FEMA | |
| ILEA | International Law Enforcement Academy | FLETC | |
| ILL | interlibrary loan | DHS | |
| ILM | Information Lifecycle Management | FEMA | |
| ILS | Integrated Logistics Support | CBP | |
| ILT | instructor-led training | MGMT | |
| IM | Incident Management (Task) | FEMA | |
| IMA | Individual Mobilization Augmentee | FEMA | |
| IMAAC | Interagency Modeling and Atmospheric Assessment Center | CISA | S&T | |
| IMAC | Infrastructure Monitoring, Analysis, and Coordination | CISA | |
| IMAGE | ICE Mutual Agreement Between Government and Employers | ICE | |
| IMAP | Interactive Mail Access Protocol | FEMA | |
| IMAR | Inspection Management Activity Report | FEMA | |
| IMAT | Incident Management Assist Team | FEMA | |
| IMC | Instrument Meteorological Conditions | FEMA | |
| IMC | Interim Message Change | FEMA | |
| IMC | International Mechanical Code | FEMA | |
| IMC | International Medical Corps | FEMA | |
| IMCS | Incident Management Communications Systems | FEMA | |
| IMD | Incident Management Division | FEMA | |
| IMET | Incident Meteorologist | FEMA | |
| IMG | Information Management Group | FEMA | |
| IMINT | Imagery Intelligence | FEMA | |
| IMO | International Maritime Organization | TSA | USCG | |
| IMOC | International Maritime Officers Course | FEMA | |
| IMPAC | International Merchant Purchase Authorization Card | FEMA | |
| IMPT | Incident Management Planning Team | OPS | |
| IMRD | Information Management and Requirements Division | I&A | |
| IMS | Incident Management System | I&A | |
| IMS | Image Management System | FEMA | |
| IMS | Information Management System | FEMA | |
| IMS | Institute of Museum Services | FEMA | |
| IMS | Intelligence Management System | FEMA | |
| IMS | Ion Mobility Spectrometry | FEMA | |
| IMSA | Incident Medical Special Assistant | FEMA | |
| IMSD | Incident Management Systems Division [of DHS/FEMA] (see IMSI or IMSID) | FEMA | |
| IMSI | Incident Management Systems Integration Division [of DHS/FEMA] | FEMA | |
| IMSID | Incident Management Systems Integration Division | FEMA | |
| IMSM | Incident Medical Special Manager | FEMA | |
| IMSR | Incident Management Situation Report | FEMA | |
| IMST | Incident Medical Special Technician | FEMA | |
| IMSuRT | International Medical Surgical Response Team | FEMA | |
| IMT | Incident Management Team | USCG | |
| IMT | Integrated Management Team | FEMA | |
| IMU | Inertial Measurement Unit | FEMA | |
| INA | Immigration and Nationality Act | USCIS | I&A | |
| INC | Income | FEMA | |
| INCITS | International Committee for Information Technology Standards | I&A | MGMT | |
| INCM | Incident Communications Manager | FEMA | |
| IND | Improvised Nuclear Device | CISA | S&T | CWMD | |
| IND | International Programs Division (S&T/IND) | DHS | |
| INEEL | Idaho National Engineering and Environmental Laboratory | FEMA | |
| INEOA | International Narcotic Enforcement Officers Association | FEMA | |
| INER | Interagency National Executive Reserve | FEMA | |
| INES | International Nuclear Event Scale | FEMA | |
| INF | Immediate Needs Funding | FEMA | |
| INF | Infrastructure | FEMA | |
| INFOCON | Information Operations Condition | FEMA | |
| INFOSEC | Information Security | I&A | |
| INL | International Narcotics and Law Enforcement Affairs [Bureau for] | DHS | |
| INMARST | International Maritime Satellite Terminal | FEMA | |
| INPASS | INS Passenger Accelerated Service System | CBP | CISA | |
| INPHO | Information Network for Public Health Officials | FEMA | |
| INPO | Institute for Nuclear Power Operations | FEMA | |
| INRP | Initial National Response Plan | FEMA | |
| INS | Immigration and Naturalization Service (replaced among USCIS, CBP and ICE at DHS; see also DMIATF and ASUFAC) | FEMA | |
| INS | Incident of National Significance (see IONS or CINS) | FEMA | |
| INS | Inertial Navigation System | FEMA | |
| INS | Insurance | FEMA | |
| INSARAG | International Search and Rescue Advisory Group | FEMA | |
| Insp | Inspection | FEMA | |
| INSPASS | see INPASS | CBP | CISA | |
| INT | Intelligence, Office of (ICE/INT) | DHS | |
| INTERCOM | Internal Communications | FEMA | |
| INTERPOL | International Criminal Police Organization | ICE | |
| INV | Investigations, Office of (ICE/INV), (USSS/INV) | DHS | |
| INVEST | Investment, Evaluation, Submission and Tracking System (*) | MGMT | |
| IO | Information Officer | FEMA | |
| IOC | Initial Operational Capability | FEMA | |
| IOC | International Olympic Committee | FEMA | |
| IOF | Initial Operating Facility | FEMA | |
| IOF | Interim Operating Facility | FEMA | |
| IOM | International Organization for Migration | FLETC | |
| IONS | Incident of National Significance | FEMA | |
| IOR | Initial Operating Report | FEMA | |
| IOS | see ISO | FEMA | |
| IP | Implementing Procedure | FEMA | |
| IP | Improvement Plan | FEMA | |
| IP | Infected Premises | FEMA | |
| IP | Information and Planning | FEMA | |
| IP | Infrastructure Protection, Office of (NPPD/IP) [formerly with IAIP] | DHS | |
| IP | Internet Protocol | FEMA | |
| IP | intellectual property | S&T | |
| IPA | Interagency Personnel Agreement | FEMA | |
| IPAWS | Integrated Public Alert and Warning System | FEMA | |
| IPB | Illustrated Parts Breakdown | FEMA | |
| IPC | Initial Planning Conference | FEMA | |
| IPC | Interagency Planning Committee | FEMA | |
| IPC | International Paralympic Committee | FEMA | |
| IPD | Infrastructure Protection Division | FEMA | |
| IPE | Integrated Performance Evaluation | FEMA | |
| IPE | Integrated Process Evaluation | FEMA | |
| IPFO | Interim Principle Federal Official | FEMA | |
| IPG | Integrated Planning Guidance | FEMA | |
| IPIA | Improper Payments Information Act | FEMA | |
| IPP | Imminent Peril to the Public | FEMA | |
| IPP | Infrastructure Protection Program | FEMA | |
| IPR | Incident Prevention and Response [Task] (National Preparedness Guidance) | FEMA | |
| IPR | Initial Projections Report | FEMA | |
| IPR | In-Process Review | FEMA | |
| IPR | In-Progress Review | FEMA | |
| IPR | Intellectual Property Rights | FEMA | |
| IPRL | Intelligent Personal Radiation Locator | CWMD | |
| IPRSGP | Intercity Passenger Rail Security Grant Program | FEMA | |
| IPS | International Port Security | USCG | |
| IPS | Information and Planning Section | FEMA | |
| IPS | Information Processing System | FEMA | |
| IPS | Integrated Planning System | FEMA | |
| IPSCOM | Imagery Policy and Security Committee | FEMA | |
| IPT | Integrated Project Team | MGMT | |
| IPT | integrated product/project team | MGMT | |
| IPT | Integrated Product Team | S&T | |
| IPT | Integrated Process Team | FEMA | |
| IPTI | Integrated Patient Tracking Initiative | FEMA | |
| IPX | Internetwork Packet Exchange | FEMA | |
| IPZ | Ingestion Pathway Zone | FEMA | |
| IQ | Internet Quorum | DHS | |
| IR | Infrared | FEMA | |
| IR | Infrared Radiation | FEMA | |
| IRA | Immediate Response Authority | FEMA | |
| IRAC | Interagency Radiological Assistance Committee | FEMA | |
| IRAPP | Infrastructure Risk Assessment Partnership Program | CISA | |
| IRB | Information Resources Board | FEMA | |
| IRB | Institutional Review Board (MD 10300) | FEMA | |
| IRB | Investment Review Board | FEMA | |
| IRBM | Intermediate Range Ballistic Missile | FEMA | |
| IRC | Information Resources Center | FEMA | |
| IRC | InfoSec (Information Security) Research Council | FEMA | |
| IRC | International Residential Code | FEMA | |
| IRCA | Immigration Reform and Control Act (1986) | CISA | OGC | |
| IRCM | Infrared Countermeasure | S&T | |
| IRF | Initial Response Force | FEMA | |
| IRFA | International Religious Freedom Act | FEMA | |
| IRFC | Initial Response Force Commander | FEMA | |
| IRFS | Infrared Field Specialist | FEMA | |
| IRI | Industrial Research Institute | S&T | |
| IRIN | Infrared Interpreter | FEMA | |
| IRIS | Incident Resource Inventory System | FEMA | |
| IRIS | Incorporated Research Institutions for Seismology | FEMA | |
| IRM | Information Resources Management | FEMA | |
| IRMCO | Interagency Resources Management Conference | FEMA | |
| IRMS | Information Resources Management Service | FEMA | |
| IRP | Institutional Removal Program | ICE | |
| IRP | Installation Restoration Plan | FEMA | |
| IRP | Investment Review Process | FEMA | |
| IRP | Interior Repatriation Program | CBP | ICE | |
| IRPMR | Information Resources Procurement and Management Review | FEMA | |
| IRR | Initial Response Resource(s) | FEMA | |
| IRRIS | Integrated Response and Recovery Information System | FEMA | |
| IRS | Internal Revenue Service | DHS | |
| IRT | Independent Review Team | FEMA | |
| IRT | Initial Response Team | FEMA | |
| IRT | International Registered Traveler | I&A | PLCY | PRIV | |
| IRTI | Immigration Reform Transformation Initiatives | USCIS | PLCY | |
| IRTPA | Intelligence Reform and Terrorism Prevention Act (2004) | CBP | CRCL | I&A | OGC | |
| IRVMC | Inland River Vessel Management Center | USCG | |
| IRZ | Immediate Response Zone | FEMA | |
| IS | Independent Study | FEMA | |
| IS | Information Security | FEMA | |
| IS | Information System | FEMA | |
| IS | Infrastructure Support | FEMA | |
| IS | Inspection Services | FEMA | |
| IS&C | Information Sharing and Coordination [Branch] (Office of Intelligence & Analysis) | FEMA | |
| ISA | Incident Staging Area | FEMA | |
| ISAA | information sharing and access agreement | MGMT | PRIV | |
| ISAAC | Integrated Security and Access Control | FEMA | |
| ISAAG | Information Systems Architectural Advisory Group | FEMA | |
| ISABP | International South Atlantic Buoy Program | FEMA | |
| ISAC | Information Sharing and Analysis Center | I&A | |
| ISAC | Infrastructure Sector Advisory Committee | FEMA | |
| ISACA | Information Systems Audit and Control Association | MGMT | |
| ISAMS | Information Sharing Agreement Management System | I&A | |
| ISAO | Information Sharing and Analysis Organization | I&A | |
| ISAR | Inspection Services Activity Report | FEMA | |
| ISBE | Infrastructure Security for the Built Environment | FEMA | |
| ISC | Interagency Security Committee | MGMT | |
| ISC | Information Sharing & Collaboration Office (I&A/ISC) | DHS | |
| ISC | Infrastructure Subcommittee | FEMA | |
| ISC | Inspection Services Coordinator | FEMA | |
| ISC | Interstate Commerce | FEMA | |
| ISCC | Information Sharing Coordinating Council | I&A | |
| ISCO | Information Sharing and Collaboration Office | FEMA | |
| ISCORS | Interagency Steering Committee on Radiation Standards | FEMA | |
| ISCP | Integrated Support Communications Plan | FEMA | |
| ISCS | International Satellite Communications Systems | FEMA | |
| ISD | Infrastructure Services Division | FEMA | |
| ISDL | Inert Skin Decontamination Lotion | FEMA | |
| ISDN | Integrated Services Digital Network | I&A | MGMT | |
| ISDR | International Strategy for Disaster Reduction | FEMA | |
| ISE | Information Sharing Environment | I&A | |
| ISEMA | Indiana State Emergency Management Agency | FEMA | |
| ISFSI | International Society of Fire Service Instructors | FEMA | |
| ISG | Incident Support Group | FEMA | |
| ISGB | Information Sharing Governance Board | FEMA | |
| ISI | Immigration Security Initiative | USCIS | |
| ISIP | Initial Strategy Implementation Plan | FEMA | |
| ISIS | Integrated Surveillance Intelligence System | CBP | |
| ISM | Information Security Marketing | FEMA | |
| ISM | Integrated Safety Management | FEMA | |
| ISMA | International Security Management Association | PLCY | |
| ISMS | integrated security managements systems | MGMT | |
| ISO | Incident Support Organization | FEMA | |
| ISO | Insurance Services Office | FEMA | |
| ISO | International Security Organization | FEMA | |
| ISO | International Organization for Standardization | S&T | I&A | |
| ISOC | Information Security Oversight Committee | FEMA | |
| ISOC | Interagency SEAT Operations Guide | FEMA | |
| ISOO | Information Security Oversight Office | MGMT | |
| ISP | Interagency Security Plan | CISA | |
| ISP | Internet Service Provider | USSS | |
| ISP | Intensive Supervision Program | ICE | |
| ISP | Immediate Services Program | FEMA | |
| ISP | Information Systems Plan | FEMA | |
| ISP | Information Security Program | MGMT | |
| ISPAG | Information Systems Policy Advisory Group | FEMA | |
| ISPP | Information Systems Planning Program | FEMA | |
| ISPS | International Ship and Port Facility Security | USCG | |
| ISR | Intelligence, Surveillance and Reconnaissance | USCG | |
| ISRS | Image Storage and Retrieval System | CBP | ICE | USCIS | CISA | |
| ISSA | Information Systems Security Association | USSS | |
| ISSA | Interservice Support Agreement | FEMA | |
| ISSGB | DHS Information Sharing and Safeguarding Governance Board | MGMT | |
| ISSGB | Information Sharing and Safeguarding Governance Board | I&A | |
| ISSM | Information System Security Manager | MGMT | |
| ISSO | Information System Security Officer | MGMT | |
| ISSP | Information Systems Security Program | FEMA | |
| IST | Incident Support Team | FEMA | |
| IST-A | Incident Support Team – Advance Element | FEMA | |
| I-STAFF | DHS Headquarters Operational Integration Staff (folded into new Directorate for Preparedness Oct 2005) | FEMA | |
| ISTEA | Intermodal Surface Transportation Efficiency Act | FEMA | |
| ISTL | Incident Support Team Leader | FEMA | |
| ISTS | Institute for Security Technology Studies | CISA | S&T | |
| ISVB | Imagery Science Validation Board | FEMA | |
| ISWG | Import Safety Working Group | PLCY | |
| IT | Information Technology | DHS | |
| ITA | Integrated Transport Analysis | TSA | |
| ITA | Information Technology Architecture | FEMA | |
| ITAA | Information Technology Association of America | PRIV | |
| ITAC | Information Technology Acquisition Center | MGMT | |
| ITACG | Interagency Threat Assessment and Coordination Group | FEMA | |
| ITAR | Information Technology Acquisition Review | MGMT | |
| ITAR | International Traffic in Arms Regulations | CBP | S&T | |
| ITC | Information Technology Committee | FEMA | |
| ITC | Information Technology Coordinator | FEMA | |
| ITC | International Trade Commission | CBP | FEMA | |
| ITD | information technology dashboard (*) | MGMT | |
| ITD | International Training Division | USCG | |
| ITDS | International Trade Data System | CBP | I&A | |
| ITE | Institute of Transportation Engineers | FEMA | |
| I-Team | Incident Team | FEMA | |
| I-Team | Intelligence Team | FEMA | |
| ITED | IFSAR Terrain Elevation Data | FEMA | |
| ITEP | Information Technology & Evaluation Program | FEMA | |
| ITF | Intelligence Task Force | FEMA | |
| ITI | International to International | CBP | TSA | |
| ITIPS | Information Technology Investment Portfolio System | I&A | MGMT | |
| ITL | Information Technology Laboratory | FEMA | |
| ITM | Inspection Transfer Manager | FEMA | |
| ITMRA | Information Technology Management Reform Act | I&A | |
| ITOC | Insider Threat Operations Center | I&A | |
| ITP | Infrastructure Transformation Program | MGMT | |
| ITP | Individual Training Plan | FEMA | |
| ITPM | Insider Threat Program Manager | I&A | |
| ITPMO | Infrastructure Transformation Program Office | MGMT | |
| I-TRAP | Interagency Terrorism Response Awareness Program | FEMA | |
| ITS | Information Technology Services | FEMA | |
| ITS | Intelligent Transportation System | FEMA | |
| ITSD | Information Technology Services Directorate | FEMA | |
| ITSH | Internal Transport, Storage, and Handling | FEMA | |
| ITSO | Information Technology Services Office | MGMT | |
| ITTC | Identity Theft Technology Council | S&T | |
| ITU | International Telegraphic Union | FEMA | |
| ITV | In-Transit Visibility | FEMA | |
| ITWG | International Technical Working Group | S&T | |
| IUPA | International Union of Police Associations | FEMA | |
| IV | Intravenous | FEMA | |
| IV&V | Interdependent Verification and Validation | TSA | CISA | |
| IVD | Interactive Video Disk | FEMA | |
| IVHHN | International Volcanic Health Hazard Network | FEMA | |
| IVR | Interactive Voice Response | FEMA | |
| IWG | Implementation Working Group | ICE | |
| IWG | Investment Working Group | FEMA | |
| IWIN | Interactive Weather Information Network | FEMA | |
| IWN | Integrated Wireless Network | MGMT | |
| IWOMEN | Women in the Fire Services, Inc. (former WFS) | FEMA | |
| IWP | Integrated Warning Program | FEMA | |
| IWS | Information Warfare and Strategy | FEMA | |
| JAARS | Joint After-Action Reporting System | FEMA | |
| JAC | Joint Advisory Committee | FEMA | |
| JAC | Joint Analysis Center | CWMD | I&A | |
| JACADS | Johnston Atoll Chemical Agent Disposal System | FEMA | |
| JACE | Joint Assessment of Catastrophic Events | FEMA | |
| JAD | Joint Application Development | FEMA | |
| JAG | Joint Action Group | FEMA | |
| JAG | Judge Advocate General (DOD) | FEMA | |
| JANAP | Joint Army-Navy-Air Force Publication | FEMA | |
| JAS | Joint Alternate Site | FEMA | |
| JATS | Joint Air Transportation System | FEMA | |
| JAWAS | Joint Automated Weather Observing System | FEMA | |
| JBPDS | Joint Biological Point Detection Systems | FEMA | |
| JCAH | Joint Commission on Accreditation of Hospitals | FEMA | |
| JCAHO | Joint Commission on Accreditation of Healthcare Organizations | FEMA | |
| JCC | Joint Coordination Center | FEMA | |
| JCCC | Joint Customs Coordination Council [United States and European Union] | CBP | |
| JCGC | Joint Center for Global Connectivity | CWMD | |
| JCS | Joint Chiefs of Staff | DHS | |
| JDCC | Joint Data Coordination Center | FEMA | |
| JDISS | Joint Deployable Intelligence Support System | FEMA | |
| JDOMS | Joint Director of Military Support | FEMA | |
| JEAD | Joint Exercise and Analysis Division (Joint Staff - J-7) | FEMA | |
| JECG | Joint Exercise Control Group | FEMA | |
| JEEP | Joint Emergency Evacuation Plan | FEMA | |
| JEMP | Joint Exercise Management Program | FEMA | |
| JEOC | Joint Emergency Operations Center | FEMA | |
| JFACC | Joint Force Air Component Commander | FEMA | |
| JFC | Joint Force Commander | FEMA | |
| JFCOM | Joint Forces Command | FEMA | |
| JFHQ-HLS | Joint Forces Headquarters - Homeland Security | FEMA | |
| JFHQ-State | Joint Force Headquarters-State | FEMA | |
| JFLCC | Joint Force Land Component Commander | FEMA | |
| JFMCC | Joint Force Maritime Component Commander | PLCY | |
| JFO | Joint Field Office | FEMA | |
| JFOCG | Joint Field Office Coordination Group | FEMA | |
| JFSP | Joint Fire Science Program | FEMA | |
| JHA | Job Hazard Analysis | FEMA | |
| JHAT | Joint Hazardous Assessment Team | FEMA | |
| JHEC | Joint Hazard Evaluation Center | FEMA | |
| JHOC | Joint Harbor Operations Command Center | USCG | |
| JHOC | Joint Harbor Operations Center | PLCY | |
| JI | Johnston Island | FEMA | |
| JIACG | Joint Interagency Coordination Group | FEMA | |
| JIALO | Joint Interagency Liaison Officer | FEMA | |
| JIATF | Joint Interagency Task Force | ICE | TSA | |
| JIATF-S | Joint Interagency Task Force - South | ICE | TSA | |
| JIB | Joint Information Bureau | FEMA | |
| JIC | Joint ICE Center | FEMA | |
| JIC | Joint Information Center | FEMA | |
| JIC | Joint Intelligence Center | FEMA | |
| JICG | Joint International Control Group | FEMA | |
| JICPAC | Joint Intelligence Center, Pacific | FEMA | |
| JIISE | Joint Interagency Intelligence Support Element | FEMA | |
| JIMPP | Joint Industrial Mobilization Planning Process | FEMA | |
| JIOC | Joint Investigative Operations Center | USCG | |
| JIS | Joint Information System | FEMA | |
| JIT | Job Instruction Training | FEMA | |
| JIT | Just In Time | FEMA | |
| JITC | Joint Interoperability Test Command | FEMA | |
| JITF-CT | Joint intelligence Task Force for Combating Terrorism | FEMA | |
| JITT | just-in-time training | MGMT | |
| JLCO | Joint Legal Claims Office | FEMA | |
| JMC | Joint Movement Center | FEMA | |
| JMET | Joint Mission Essential Task | FEMA | |
| JMFU | Joint METOC Forecast Unit | FEMA | |
| JMIE | Joint Maritime Information Element | I&A | PLCY | PRIV | |
| JMIP | Joint Military Intelligence Program | I&A | |
| JMMO | Joint Medical Mobilization Office | FEMA | |
| JMRO | Joint Medical Regulating Office | FEMA | |
| JMT | Joint Management Team (combination of IST and MST - US&R and DMAT or NDMS) | FEMA | |
| JNACC | Joint Nuclear Accident Coordinating Center | FEMA | |
| JNAIRT | Joint Nuclear Accident/Incident Response Team | FEMA | |
| JNC | Joint News Center | FEMA | |
| JOA | Joint Operational Area | FEMA | |
| JOC | Joint Operations Center | FEMA | |
| JOPES | Joint Operations Planning and Execution System | FEMA | |
| JPAC | Joint Planning Augmentation Cell (for CBIRF) | FEMA | |
| JPAS | Joint Personnel Adjudication System | FEMA | |
| JPATS | Justice Prisoner and Alien Transportation System | ICE | |
| JPEG | Joint Photographic Experts Group | FEMA | |
| JPEO/CBD | Joint Program Executive Office for Chemical and Biological Defense | CISA | |
| JPIC | Joint Public Information Center | FEMA | |
| JPMRC | Joint Patient Movement Requirements Center | FEMA | |
| JPMT | Joint Patient Movement Team | FEMA | |
| JPO | Joint Program Office | FEMA | |
| JPSG | Justice-Defense Program Steering Group | FEMA | |
| JRC | Joint Requirements Council | FEMA | |
| JRCT | Joint Requirements Coordination Team | MGMT | |
| JRERP | Joint Radiological Emergency Response Plan | FEMA | |
| JRIC | Joint Regional Intelligence Center | FEMA | |
| JRIES | JITF-CT RISSNET Information Exchange System | FEMA | |
| JRIES | Joint Regional Information Exchange System | CISA | I&A | OPS | |
| JRMP | Joint Regional Medical Planner | FEMA | |
| JRMPO | Joint Regional Medical Planning Office | FEMA | |
| JRS | Joint Reporting System | FEMA | |
| JRT | Joint Response Team | FEMA | |
| JS | Joint Staff | FEMA | |
| JSCP | Joint Strategic Capabilities Plan | FEMA | |
| JSERA | Joint Special Events Risk Assessment | CISA | |
| JSIPP | Joint Service Installation Pilot Program | FEMA | |
| JSOTF | Joint Special Operations Task Force | FEMA | |
| JSTARS | Joint Surveillance Target Attack Radar System | FEMA | |
| JTA | Jacksonville Transportation Authority | FEMA | |
| JTF | Joint Task Force | FEMA | |
| JTF - O | Joint Task Force - Olympics | FEMA | |
| JTF-CM | Joint Task Force - Consequence Management | FEMA | |
| JTF-CS | Joint Task Force - Civil Support | FEMA | |
| JTF-FF | Joint Task Force - Firefighter | FEMA | |
| JTF-Katrina | Joint Task Force-Katrina | FEMA | |
| JTF-NCR | Joint Task Force - National Capital Region | FEMA | |
| JTF-State | Joint Task Force-State | FEMA | |
| JTIMS | Joint Training Information Management System | FEMA | |
| JTMS | Joint Training Master Schedule | FEMA | |
| JTOT | Joint Tactical Operations Team | FEMA | |
| JTOT | Joint Technical Operations Team | FEMA | |
| JTPA | Job Training Partnership Act | FEMA | |
| JTR | Joint Travel Regulations | FEMA | |
| JTRB | Joint Telecommunications Resources Board | FEMA | |
| JTTF | Joint Terrorism Task Force | FEMA | I&A | |
| JTWC | Joint Typhoon Warning Center | FEMA | |
| JULL | Joint Universal Lessons Learned (Report) | FEMA | |
| JULLS | Joint Universal Lessons Learned System | FEMA | |
| JVM | Java Virtual Machine | FEMA | |
| JWARN | Joint Warning and Reporting Network | FEMA | |
| JWC | Joint Warfare Center | FEMA | |
| JWFC | Joint Warfighting Center | FEMA | |
| JWICS | Joint Worldwide Intelligence Communication System | FEMA | I&A | |
| JWID | Joint Warrior Interoperability Demonstration | FEMA | |
| JXDM | [Global] Justice XML Data Model | I&A | |
| k | kilo (1,000) | FEMA | |
| KAPP | Key Asset Protection Program (see CAAP) | FEMA | |
| Kb | Kilobit | FEMA | |
| kB | Kilobyte | FEMA | |
| kBPS | Kilobits Per Seconds | FEMA | |
| KBRM | Knowledge-Based Risk Management | CBP | |
| KCCO | Kansas City Commodity Office | FEMA | |
| KD | Knocked Down | FEMA | |
| KDEM | Kansas Department of Emergency Management | FEMA | |
| KDEM | Kentucky Department of Emergency Management | FEMA | |
| KDP | Key Decision Point | FEMA | |
| KEDB | known error database | MGMT | |
| kg | kilogram | FEMA | |
| kHz | kiloHertz | FEMA | |
| KI | Potassium Iodide | FEMA | S&T | |
| KIO | Key Intelligence Official | I&A | |
| km | kilometer | FEMA | |
| KMI | Key Management Infrastructure | FEMA | |
| KML | Keyhole Markup Language | FEMA | |
| KMS | Knowledge Management System | FEMA | |
| kN | kilo-Newton | FEMA | |
| KPI | key performance indicator | MGMT | |
| KPP | key performance parameter | S&T | |
| KR | key resource | DHS | |
| KSA | Knowledge, Skills, and Abilities | FEMA | |
| KSO | Key Security Official (MD 10300) | FEMA | |
| KST | Known or Suspected Terrorist | FEMA | |
| KT | Kiloton | FEMA | |
| kV | kilovolt | FEMA | |
| KVERT | Kamchatkan Volcanic Eruptions Response Team | FEMA | |
| kW | Kilowatt | FEMA | |
| kWh | kilowatt hour | FEMA | |
| L | Locality | FEMA | |
| L&D | Learning & Development | FEMA | |
| LA | Legislative Affairs (see OLA) | FEMA | |
| LAC | Local Assistance Center | FEMA | |
| LAG | Lowest Adjacent Ground [grade] | FEMA | |
| LAN | Local Area Network | FEMA | I&A | MGMT | OPA | |
| LAN/WAN | Local Area Network/Wide Area Network | FEMA | |
| LANDSAT | Land Satellite | FEMA | |
| LANL | Los Alamos National Laboratory | CWMD | |
| LAO | Lead Agency Official | FEMA | |
| LAP | Lesson Administration Page | FEMA | |
| LASP | Large Aircraft Security Program | TSA | |
| lb | pound | FEMA | |
| LBAD | Lexington Blue Grass Army Depot | FEMA | |
| lbf | pound force | FEMA | |
| LBP | lead-based paint | DHS | |
| LC | Logistics Center | FEMA | |
| LC-A | Logistics Center-Atlanta | FEMA | |
| L-CAR | Local Capability Assessment for Readiness | FEMA | |
| LCAT | Logistics Closeout Assistance Team | FEMA | |
| LCCE | Life Cycle Cost Estimate | CISA | |
| LC-FW | Logistics Center-Fort Worth | FEMA | |
| LCM | Life Cycle Management | FEMA | |
| LC-MF | Logistics Center-Moffett Field | FEMA | |
| LCMS | Learning Content Management System | FEMA | |
| LCO | Limiting Condition for Operation | FEMA | |
| LCS | Local Communications System | FEMA | |
| LCT | Liaison Coordination Team | FEMA | |
| LD | Lethal Dose | FEMA | |
| LD | Limited Data | FEMA | |
| LDAP | Light Directory Access Protocol | FEMA | |
| LDM | logical data model | MGMT | |
| LDR | Lutheran Disaster Response | FEMA | |
| LDS | Lightning Detection System | FEMA | |
| LDW | Last Day Worked | FEMA | |
| LE | loaned executive | MGMT | |
| LE | law enforcement [activity] | DHS | |
| LE | Law Enforcement | FEMA | |
| LEA | Light Enforcement Aircraft | ICE | |
| LEA | Law Enforcement Agency | FEMA | FLETC | USCG | |
| LEADERS | Lightweight Epidemiology Advanced Detection and Emergency Response System | FEMA | |
| LEAINTP | Law Enforcement Advanced Interviewing Training Program | FLETC | |
| LEAP | Law Enforcement Availability Pay | ICE | |
| LEC | Local Exchange Carrier | FEMA | |
| LECC | Law Enforcement Coordination Center | FEMA | |
| LEDET | Law Enforcement Detachment | USCG | |
| LEED® | leadership in energy and environmental design | FLETC | |
| LeeTran | Lee County Transit Authority (Florida) | FEMA | |
| LEGAT | Legal Attache | FEMA | OGC | |
| LEH | Light Enforcement Helicopter | ICE | |
| LEISP | Law Enforcement Information Sharing Program | FEMA | |
| LEL | Lower Explosive Limit | FEMA | |
| LEL | Lowest Effect Level | FEMA | |
| LELI | Law Enforcement Leadership Institute | FLETC | |
| LEM | Local Emergency Management | FEMA | |
| LEMA | Local Emergency Management Authority | FEMA | |
| LEMDP | Law Enforcement Management Development Program | FLETC | |
| LEO | Law Enforcement Online | I&A | |
| LEO | Law Enforcement Officer | FLETC | TSA | |
| LEOC | Local Emergency Operations Center | FEMA | |
| LEOSA | Law Enforcement Officers Safety Act | CBP | FLETC | TSA | |
| LEP | Loaned Executive Program | MGMT | |
| LEP | limited English proficient person | CRCL | |
| LEP | Leadership Excellence Program | FEMA | |
| LEP | Limited English Proficiency | FEMA | CRCL | |
| LEPB | Loaned Executive Program Board | MGMT | |
| LEPC | Local Emergency Planning Committee | FEMA | |
| LEPPC | Local Emergency Prevention and Preparedness Council | FEMA | |
| LERN | Law Enforcement Radio Net | FEMA | |
| LERT | Logistics Emergency Response Team | FEMA | |
| LES | law enforcement sensitive | I&A | |
| LESC | Law Enforcement Support Center | ICE | |
| LESO | Law Enforcement Security Officer | FEMA | |
| LETPP | Law Enforcement Terrorism Prevention Program | CISA | |
| LETS | Law Enforcement Telecommunications System | FEMA | |
| LEU | Low-Enriched Uranium | FEMA | |
| LEVEL 1 EST | Full EST activation level (NRCC) | FEMA | |
| LEVEL 2 EST | Intermediate EST activation level (NRCC) | FEMA | |
| LEVEL 3 EST | Minimal EST activation level (NRCC) | FEMA | |
| LEWG | Law Enforcement Working Group | FEMA | |
| LF | Linear Foot | FEMA | |
| LF | Low Frequency | FEMA | |
| LFA | Lead Federal Agency | FEMA | |
| LFD | Letter of Final Determination | FEMA | |
| LFE | Lowest Floor Elevation | FEMA | |
| LFEOC | Local Federal Emergency Operations Center | FEMA | |
| LFFE | Lowest Finished Flood Elevation | FEMA | |
| LFO | Lead Federal Official | FEMA | |
| LFP | Livestock Feed Programs | FEMA | |
| LH | Local Hire | FEMA | |
| LHA/LHD | Landing Helicopter - Assault/ Landing Helicopter - Deck | FEMA | |
| LHD | Local Health Department | FEMA | CISA | CWMD | |
| LHMC | Local Hazard Mitigation Coordinator | FEMA | |
| LHR | Limited Home Repair | FEMA | |
| LHW | Last Hour Worked | FEMA | |
| LIBSYS | Library System | FEMA | |
| LIC | License | FEMA | |
| LID | Low-Impact Development | FEMA | |
| LIDAR | Light Detection and Ranging (system) | FEMA | |
| LIDEF | Levee Inventory Data Entry Form | FEMA | |
| LIFE | Legal Immigration Family Equity | USCIS | |
| LIHEAP | Low Income Household Energy Assistance Program | FEMA | |
| LIMFAC | Limiting Factor | FEMA | |
| LIMS | Logistics Information Management System | USCG | |
| LIMS | Laboratory Information Management System | FEMA | |
| LINX | Law Enforcement Information Exchange [Navy] | I&A | |
| LISS | Linear Imaging and Self-Scanning | FEMA | |
| LL | Lessons Learned | FEMA | |
| LLEA | Lead Law Enforcement Agency | FEMA | |
| LLEA | Local Law Enforcement Agency | FEMA | FLETC | CISA | |
| LLIS | Lessons Learned Information Sharing System | PLCY | |
| LLNL | Lawrence Livermore Laboratory | S&T | CWMD | |
| LLP | Limited Liability Partnership | DHS | |
| LLR | Lessons Learned (Hot Wash) Report | FEMA | |
| LLW | Low-Level Waste | FEMA | |
| LLWS | Low-Level Wind Shear | FEMA | |
| LM | Logistics Management (FEMA/LM) | DHS | |
| LMA | Land Management Agencies | FEMA | |
| LMD | Logistics Management Directorate (of DHS/FEMA) | FEMA | |
| LMF | Logistics Management Facility | FEMA | |
| LMFBR | Liquid Metal Fast Breeder Reactor | FEMA | |
| LMI | Logistics Management Institute | FEMA | |
| LMPC | Labor-Management Partnership Council | FEMA | |
| LMR | Living Marine Resource | FEMA | |
| LMS | Learning Management System | MGMT | |
| LNG | Liquefied Natural Gas | USCG | S&T | |
| LNO | Liaison Officer | FEMA | |
| LOA | Letter of Agreement | FEMA | |
| LOAD | Loadmaster | FEMA | |
| LOAEL | Lowest Observed Adverse Effect Level | FEMA | |
| LOC | Letter of Credit | FEMA | |
| LOC | Levels of concern | FEMA | |
| LOC | Line of Communication | FEMA | |
| LOC | Library of Congress | DHS | |
| LOCA | Loss of Coolant Accident | FEMA | |
| LOC-TFCS | Letter of Credit - Treasury Financial Communications System | FEMA | |
| LODR | Letter of Determination Review | FEMA | |
| LOEP | Louisiana Office of Emergency Preparedness | FEMA | |
| LOFR | Liaison Officer | FEMA | |
| LOG | Logistics | FEMA | |
| LOI | Letter of Instruction | FEMA | |
| LOI | Letter of Intent | FEMA | |
| LOINC | Logical Observation Identifiers Names and Codes | FEMA | |
| LOMA | Letter of Map Amendment | FEMA | |
| LOMC | Letter of Map Change | FEMA | |
| LOMC-VALID | Letter of Map Change Revalidation | FEMA | |
| LOMR | Letter of Map Revision | FEMA | |
| LOMR-F | Letter of Map Revision Based on Fill | FEMA | |
| LOP | level of protection | MGMT | |
| LOP | Legal Orientation Program | FEMA | |
| LOS | Line of Sight | FEMA | |
| LOSA | Logistical Operations Staging Area | FEMA | |
| LOSAP | Length-of-service Award Program | FEMA | |
| LOSSEST | Loss Estimation | FEMA | |
| LOU | Limited official use | DHS | |
| LPA | Legislative and Public Affairs | FEMA | |
| LPDP | Livestock Preservation Donation Program | FEMA | |
| LPG | Liquefied Petroleum Gas | FEMA | |
| LPN | Licensed Practical Nurse | FEMA | |
| LPOC | Last Port of Call | CBP | USCG | |
| LPPC | Local Preparedness and Prevention Council | FEMA | |
| LPR | lawful permanent resident | MGMT | |
| LPR | Lawful Permanent Resident (status) | CBP | USCIS | |
| LPR | Legal Permanent Resident (person) | CBP | USCIS | PLCY | |
| LPZ | Low Population Zone | FEMA | |
| LR | Limited Response | FEMA | |
| LRA | Louisiana Recovery Authority | FEMA | |
| LR-BSDS | Long Range Biological Standoff Detection System | FEMA | |
| LRC | Learning Resource Center | FEMA | |
| LRC | Logistics Resource Center | FEMA | |
| LRC | Logistics Response Center | FEMA | |
| LRCT | long range cordless telephone switch | S&T | |
| LRFD | Load and Resistance Factor Design | FEMA | |
| LRIP | Low Rate Initial Production | FEMA | |
| LRIT | long range identification and tracking | PLCY | |
| LRMP | Long Range Management Plan | FEMA | |
| LRN | Laboratory Response Network | S&T | |
| LRT | Long Range Tracker | CBP | |
| LRU | Lowest Replaceable Unit | FEMA | |
| LS | Logistics Support | FEMA | |
| LS | Lump Sum | FEMA | |
| LSA | Logistics Staging Area | FEMA | |
| LSC | Life Safety Code (National Fire Protection Association 101) | FEMA | |
| LSC | Legal Services Corporation | OGC | |
| LSC | Life Support Center | FEMA | |
| LSC1 | Logistics Section Chief Type 1 | FEMA | |
| LSC2 | Logistics Section Chief Type 2 | FEMA | |
| LSCAD | Lightweight Stand-off Chemical Agent Detector | FEMA | |
| LSCD | Life Safety Code Deficiency | FEMA | |
| LSCT | Line Scout | FEMA | |
| LSE | Local Subscriber Environment | FEMA | |
| LSFE | Life Safety and Fire Engineering | FEMA | |
| LSFE | Life Safety and Fire Engineering Branch of FEMA Office of Occupational Safety, Health & Environment (OSHE) | FEMA | |
| LSFP | Life Safety and Fire Protection | FEMA | |
| LSFP | Life Safety and Fire Protection Program | FEMA | |
| LSG | Large Scale Game | FEMA | |
| LSP | Lump Sum Payment | FEMA | |
| LSS | Laboratory Scientific Services | S&T | |
| LSS | Life Support System | FEMA | |
| LSU | Louisiana State University (NDPC) | FEMA | |
| LSV | Logistical Staging Vehicle | FEMA | |
| LT | Lieutenant (aka: Lt or Lieut) | FEMA | |
| LTA | Lead Technical Authority | MGMT | |
| LTA | Lighter Than Air | FEMA | |
| LTATP | Land Transportation Anti-terrorism Training Program | FLETC | |
| LTCR | Lost Time Case Rate | FEMA | |
| LTD | Limited | DHS | |
| LTG | Lieutenant General | FEMA | |
| LTL | Less-than Truck Load | FEMA | |
| LTR | Long-Term Recovery | FEMA | |
| LTRC | Long Term Recovery Committee | FEMA | |
| LTRC | Long Term Recovery Coordinator | FEMA | |
| LTRO | Long Term Recovery Office | FEMA | |
| LUC | land use control | DHS | |
| LULC | Land Use and Land Cover | FEMA | |
| LVA | Low Volatility Agent | FEMA | |
| LVB | Large Vehicle Bomb | FEMA | |
| LVBIED | large vehicle-borne improvised explosive device | S&T | |
| LWDR | Lost Work Day Rate | FEMA | |
| LWF | Lutheran World Federation | FEMA | |
| LWOP | Leave Without Pay | FEMA | |
| LWR | Light Water Reactor | FEMA | |
| LYNX | Central Florida Regional Transportation Authority | FEMA | |
| LZ | Landing Zone | FEMA | |
| m | meter | FEMA | |
| M&A | Management and Administrative | FEMA | |
| M&IE | Meals and Incidental Expenses | FEMA | |
| M&IE | Miscellaneous and Incidental Expenses | FEMA | |
| M&S | Modeling and Simulation | FEMA | |
| M/S | Meters per Second | FEMA | |
| M/V | Merchant Vessel | CBP | USCG | |
| MA | Marshalling Area | FEMA | |
| MA | Mission Assignment | FEMA | |
| MAA | Mutual Aid Agreement | FEMA | |
| MAAD | Mobile Asset Activities Document | FEMA | |
| MAAFS | Mid-Atlantic Association of Forensic Scientists | USSS | |
| MABAS | Mutual Aid and Box Alarm System | FEMA | |
| MAC | Multiple award contract | USCG | |
| MAC | Mapping and Analysis Center | FEMA | |
| MAC | Mission Assignment Coordinator | FEMA | |
| MAC | Mitigation Assistance Clinic | FEMA | |
| MAC | Monitoring and Analysis Coordinator | FEMA | |
| MAC | Multi-Agency Command | FEMA | |
| MAC | multiagency committees | FEMA | |
| MAC | Multiagency Coordinating (Entity) | FEMA | |
| MAC | Multiagency Coordination | FEMA | |
| MAC Entity | Multiagency Coordinating Entity | FEMA | |
| MACA | Military Assistance to Civil Authorities | FEMA | |
| MACC | Multi Agency Crime Center | ICE | |
| MACC | Multiagency Command Center | FEMA | |
| MACC | Multi-Agency Coordination Center | FEMA | |
| MACDIS | Military Assistance for Civil Disturbances | FEMA | |
| MACGp | Multi-Agency Coordination Group | FEMA | |
| MACOM | Major Command | FEMA | |
| MACS | Multi-Agency Coordination System | FEMA | |
| MAEC | Mid-America Earthquake Center | FEMA | |
| MAELU | Mutual Atomic Energy Liability Underwriters | FEMA | |
| MAF | Master Appropriation File | FEMA | |
| MAFC | MAFFS Clerk | FEMA | |
| MAFFS | Modular Airborne Fire Fighting System | FEMA | |
| MAGIC | Mid-America Geographic Information Council | FEMA | |
| MaHIMS | Medical and Health Incident Management System | FEMA | |
| MALE | Medium Altitude Long Endurance (see also HALE) | USCG | |
| MANPADS | Man Portable Air Defense System | OGC | |
| MAOC | Military Air Operations Coordinator | FEMA | |
| MAPs | Motorist Assist Points | FEMA | |
| MAR | Monthly Accomplishments Report | FEMA | |
| MARAC | Mutual Aid Regional Advisory Committee | FEMA | |
| MARAD | Maritime Administration | FEMA | TSA | USCG | |
| MARC | Maryland Rail Commuter | FEMA | TSA | |
| MARC | Mid-America Regional Council | FEMA | |
| MAREP | Marine Report | FEMA | |
| MARFORLANT | Marine Forces Atlantic | FEMA | |
| MARPLOT | Mapping Applications for Response, Planning, and Local Operational Tasks | FEMA | |
| MARR | Mission Assignment Reimbursement Request | FEMA | |
| MARS | Military Affiliated Radio System | FEMA | |
| MARS | Mobile Analytical Response System | FEMA | |
| MARS | Multi-function Acquisition and Reporting System | FEMA | |
| MARSA | Military Assumes Responsibility for Separation of Aircraft | FEMA | |
| MARSEC | Maritime Security | USCG | |
| MARSEC | maritime security level | PLCY | |
| MarshMALLOW | Marsh Management Activities for Learning the Lifestyles of Wildlife | FEMA | |
| MART | Morning Advisory Risk Threat (see also DART and EART) | FEMA | |
| MAS | Mapping Activity Statement | FEMA | |
| MASF | Mobile Aeromedical Staging Facility | FEMA | |
| MASFO | Multi-Agency Strike Force Operation | USCG | |
| MASH | Mobile Army Surgical Hospital | FEMA | |
| MASINT | Measurement and Signature Intelligence | TSA | I&A | OPS | |
| MAST | Maritime Security and Strategic Toolkit | FEMA | CISA | |
| MAST | Midwestern Alliance of Sovereign Tribes | FEMA | |
| MAST | Military Assistance to Safety and Traffic | FEMA | |
| MAST | Mitigation Advisors' Strategic Tracker | FEMA | |
| MAT | Mobilization Assistance Team | FEMA | |
| MATES | Mobilization and Training Equipment Site | FEMA | |
| MATF | Multi-Agency Task Force | FEMA | |
| MATRIX | Multistate Anti-Terrorism Information Exchange | I&A | |
| MATTS | Marine Asset Tag Tracking System | S&T | |
| MATTS | Mobile Air Transportable Telecommunications System | FEMA | |
| MAV | Micro Air Vehicle | I&A | |
| MB | Megabyte | FEMA | |
| mb | millibar | FEMA | |
| MBA | Master of Business Administration | FEMA | |
| MBO | Management by Objectives | FEMA | |
| MBPS | Megabytes per Second | FEMA | |
| MBTA | Migratory Bird Treaty Act | FEMA | |
| MC | Marine Corps | FEMA | |
| MC | Member of Congress | FEMA | |
| MC | Mobilization Center | FEMA | |
| MCA | Multi-Channel Analyzer | FEMA | |
| MCAD | Military Crew Advisor | FEMA | |
| M-CAST | Medical Capabilities Assessment & Status Tool | FEMA | |
| MCB | Movement Coordination Branch | FEMA | |
| MCC | Major Cities [police] Chiefs | FEMA | S&T | |
| MCC | Master Control Cell | FEMA | |
| MCC | Mission Control Center | FEMA | |
| MCC | Mobility Control Center | FEMA | |
| MCC | Movement Coordination Center | FEMA | |
| MCD | Medical Crew Director | FEMA | |
| MCE | Maximum Credible Event | FEMA | |
| MCEER | Multidisciplinary Center for Earthquake Engineering Research | FEMA | |
| MCF | Mass Care and Feeding | FEMA | |
| MCF | Movement Coordination Function | FEMA | |
| MCI | Mass Casualty Incident | FEMA | |
| MCL | maximum contaminant level | DHS | |
| MCLG | maximum contaminant level goal | DHS | |
| MCMC | Mid-Continent Mapping Center | FEMA | |
| MCMT | Mobilization Center Management Team | FEMA | |
| MCO | MERS Coordination Office | FEMA | |
| MCOC | Marine Corps Operations Center | FEMA | |
| MCOE | Metadata Center of Excellence (see EDMO) | MGMT | |
| MCR | Military Communications Representative | FEMA | |
| MCS | Movement Coordination System | FEMA | |
| MCSAP | Motor Carrier Safety and Assistance Program | FEMA | TSA | |
| MCU | Movement Coordination Unit | FEMA | |
| MCV | Mobile Coordinating Vehicle | FEMA | |
| MD | Management Directive | FEMA | |
| MD | Medical Doctor | FEMA | |
| MDA | Maritime Domain Awareness | USCG | |
| MDC | Maintenance and Deactivation Contracts | FEMA | |
| MDD | Metal Detection Device | TSA | |
| MDF | Medical, Dental and Funeral | FEMA | |
| MDRC | Mobile Disaster Recovery Center | FEMA | |
| MDRO | Mission Disaster Relief Officer | FEMA | |
| MDRV | Mobile Disaster Recovery Vehicle | FEMA | |
| MDS | Mennonite Disaster Service | FEMA | |
| MDST | Mountain Daylight Savings Time (see MDT) | FEMA | |
| MDT | Mountain Daylight Time (GMT - 6) | FEMA | |
| ME | Medical Examiner | FEMA | |
| MEA | Multi-Role Enforcement Aircraft | ICE | |
| MEA | Major Emergency Action | FEMA | |
| MEAG | Major Emergency Action Guide | FEMA | |
| MEAP | Mobile Environmental Analytical Platform | FEMA | |
| MED | Medium | FEMA | |
| MEDEVAC | Medical Evacuation | FEMA | |
| MEDL | Medical Unit Leader | FEMA | |
| MEDRED | Medical Readiness (OHA/MEDRED) | DHS | |
| MEEMCN | Minimum Essential Emergency Medical Communications Network | FEMA | |
| MEF | Mission Essential Function | FEMA | |
| MEG | Medical Evaluation Guidance | FEMA | |
| MEIR | Medical Effects of Ionizing Radiation | FEMA | |
| MEL | Mobile-Erector Launcher | FEMA | |
| MEMA | Motor & Equipment Manufacturers Association | ICE | |
| MEMA | Maine Emergency Management Agency | FEMA | |
| MEMA | Maryland Emergency Management Agency | FEMA | |
| MEMA | Massachusetts Emergency Management Agency | FEMA | |
| MEMA | Mississippi Emergency Management Agency | FEMA | |
| MEMA | Missouri Emergency Management Agency | FEMA | |
| MEMU | Mass Evacuation Management Unit | FEMA | |
| MEOW | Maximum Envelope of Water | FEMA | |
| MEOW | Maximum Envelope of Winds | FEMA | |
| MEP | Management Engineering Plan | FEMA | |
| MEPI | Middle East Partnership Initiative | DHS | |
| MEPP | Master Exercise Practitioner Program | FEMA | |
| MERRT | Medical Emergency Radiological Response Team | FEMA | |
| MERS | Mobile Emergency Response Support | FEMA | |
| MERSA | Mobile Emergency Response Support Assets | FEMA | |
| MET | Meteorological | FEMA | |
| MET | Meteorologist | FEMA | |
| MET | Mission Essential Task | FEMA | |
| METAR | Management Evaluation Technical Assessment Review | FEMA | |
| METAR | Meteorological Aviation Report | FEMA | |
| METL | Mission-Essential Task List | FEMA | |
| METOC | Meteorological and Oceanographic | FEMA | |
| METSAT | Meteorological Satellite | FEMA | |
| MeV | Megaelectronvolt | FEMA | |
| meV | millielectronvolt | FEMA | |
| MEWT | Mobile Electronic Warfare Technologies | FEMA | |
| MFAS | Marriage Fraud Amendment System | USCIS | |
| MFR | Memorandum For the Record | FEMA | |
| MFRI | Maryland Fire and Rescue Institute | FEMA | |
| MFTR | Manufacturer | FEMA | |
| MG | Marsh Vegetation (Line) | FEMA | |
| mg | milligram | FEMA | |
| MG/M3 | Milligrams per Cubic Meter | FEMA | |
| MG-MIN/M3 | Milligram Minutes per Cubic Meter | FEMA | |
| MGMT | Management | DHS | |
| MGMT | Management [Directorate] | MGMT | |
| MH | Manufactured Housing | FEMA | |
| MH | Mental Health | FEMA | |
| MH | Mobile Home | FEMA | |
| MHC | Mobile Health Clinic | FEMA | |
| MHE | Materiel Handling Equipment | FEMA | |
| MHEC | Military Helicopter Crewmen | FEMA | |
| MHEM | Military Helicopter Manager | FEMA | |
| MHMS | Military Helicopter Manager Supervisor | FEMA | |
| MHS | Message Handling System | FEMA | |
| MHTGR | Modular High Temperature Gas Reactor | FEMA | |
| MHW | Mean High Water | FEMA | |
| MHWL | Mean High Water Line | FEMA | |
| MHz | Megahertz | FEMA | |
| MI | Major Incident (medical) | FEMA | |
| MI | Middle Initial | FEMA | |
| MI2 | Multi-level-secure Information Infrastructure | FEMA | |
| MIC | Media Information Center | FEMA | |
| MIC | Meteorologist in Charge | FEMA | |
| MICS | Monitoring Information on Contracted Studies (System) | FEMA | |
| MIDAS | Micro-fluidic Integrated DNA Analysis System | FEMA | |
| MIEP | Mass Immigration Emergency Plan | FEMA | |
| MIFC | Maritime Intelligence Fusion Center | USCG | |
| MIIS | Microsoft Identity Integration Server | MGMT | |
| MIL | Military Advisor's Office | DHS | |
| MILES | Multiple Integrated Laser Engagement System | FEMA | |
| MIL-STD | Military Standard | FEMA | |
| MIM | Major Incident Management (medical) | FEMA | |
| MIME | Multi-purpose Internet Mail Extensions | FEMA | |
| MIN | Minimum | FEMA | |
| MIN | Mobile Identification Number | FEMA | |
| MIND | Maritime Interceptor for Nuclear Detection | S&T | CWMD | |
| MINICAM | Miniature Chemical Agent Monitor | FEMA | |
| MIP | management-in-place [asbestos] | DHS | |
| MIPR | Military Interdepartmental Purchase Request | FEMA | |
| MIPT | Memorial Institute for the Prevention of Terrorism | FEMA | |
| MIRP | Military Improved Response Program | FEMA | |
| MIRV | Multiple Independent Re-entry Vehicle | FEMA | |
| MIS | Management Information System | FEMA | |
| MISLE | Maritime Information for Safety and Law Enforcement | USCG | |
| MIT | Mitigation | FEMA | |
| MITT | Mobile Implementation Training Team | FEMA | |
| M-JPEG | Motion JPEG | FEMA | |
| MKT | Mobile Kitchen Trailer | FEMA | |
| MLAT | Mutual Legal Assistance Treaty | I&A | |
| MLD | Median Lethal Dose | FEMA | |
| MLETP | Marine Law Enforcement Training Program | FLETC | |
| MLH | Medium Lift Helicopter | ICE | |
| MLOS | Microwave Line of Sight | FEMA | |
| MLW | Mean Low Water | FEMA | |
| mm | millimeter | FEMA | |
| MMA | Major Metropolitan Area | FEMA | |
| MMC | Main Media Center | FEMA | |
| MMCE | Medical Management of Chemical Exposure | FEMA | |
| MMD | Merchant Mariner Document | USCG | |
| MMI | Modified Mercalli Intensity | FEMA | |
| MMIS | Municipal Management Information System | FEMA | |
| MMPA | Marine Mammal Protection Act | FEMA | |
| MMPAC | Merchant Marine Personnel Advisory Committee | USCG | |
| MMRS | Metropolitan Medical Response System | FEMA | |
| MMS | Minerals Management Service | FEMA | |
| MMST | Metropolitan Medical Strike Team | FEMA | |
| MMWR | Morbidity and Mortality Weekly Report | FEMA | |
| MNAP | Mapping Needs Assessment Process | FEMA | |
| MNS | Mission Needs Statement | FEMA | |
| MNUSS | Map Needs Update Support System | FEMA | |
| MO | Medical Officer | FEMA | |
| MO | Method of operation | DHS | |
| MOA | Memorandum of Agreement | DHS | |
| MOB | Main Operating Base | FEMA | |
| MOB | Mobilization (or Mobilize) | FEMA | |
| MOB Center | Mobilization Center | FEMA | |
| MOC | Mobile Operations Center | FEMA | |
| MOC | Maritime Operations Center | PLCY | |
| MODEM | Modulator/Demodulator | FEMA | |
| MODU | Mobile Offshore Drilling Unit | FEMA | |
| MOE | measure of effectiveness | MGMT | |
| MOM | Maximum of Maximums | FEMA | |
| MOM | Middle of Month | FEMA | |
| MOOTW | Military Operations Other Than War | FEMA | |
| MOP | measure of performance | MGMT | |
| MOPP | Mission-Oriented Protective Posture | FEMA | |
| MORE | Making Officer Redeployment Effective | FEMA | |
| MOS | measure of suitability | MGMT | |
| MOSS | Management Operations and Student Support | FEMA | |
| MOU | Memorandum of understanding | DHS | |
| MOX | Mixed Oxide Fuels | FEMA | |
| MP | Management Profiler | FEMA | |
| MP | Military Police | FEMA | |
| MPA | Maritime Patrol Aircraft | ICE | |
| MPAC | Muslim Public Affairs Council | CRCL | |
| MPC | Main Press Center | FEMA | |
| MPC | Maximum Permissible Concentration | FEMA | |
| MPC | Mid-term Planning Committee | FEMA | |
| MPC | Mid-term Planning Conference | FEMA | |
| MPD | Maximum Potential Destruction | FEMA | |
| MPE | Maximum Permissible Exposure | FEMA | |
| MPEG | Motion Picture Expert Group | FEMA | |
| MPH | Miles per Hour | FEMA | |
| MPPP | Mortgage Portfolio Protection Program | FEMA | |
| MPS | Mission Planning System | FEMA | |
| MPU | Microprocessor Unit | FEMA | |
| MPU | Mobile Power Unit | FEMA | |
| MQIT | Medical Quality Improvement Team | FEMA | |
| MQM | Medical Quality Management | FEMA | |
| MQM Program | Medical Quality Management Program | DHS | |
| MR | Medical Records | FEMA | |
| MR | Medical Response | FEMA | |
| mR | milliroentgen/millirem | FEMA | |
| mR/h | milliRoentgen per hour | FEMA | |
| MRA | Monthly Rental Assistance | FEMA | |
| MRA | Mortgage and Rental Assistance | FEMA | |
| MRAT | Medical Radiobiology Advisory Team | FEMA | |
| MRC | Medical Reserve Corps | FEMA | CISA | |
| MRC | Management Review Council | FEMA | |
| MRC | Monthly Recurring Costs | FEMA | |
| MRE | Meal, Ready-to-Eat | FEMA | USCG | |
| mRem | millirem | FEMA | |
| MRF | Medium Range Forecast | FEMA | |
| MRI | Mean Recurrence Interval | FEMA | |
| MRIC | Mobile Registration Intake Center | FEMA | |
| MRMC | Medical Research and Materiel Command | FEMA | |
| MRO | Mandatory Removal Offense | ICE | |
| MRP | Machine readable passport | CBP | |
| MRP | Minimal Repair Program | FEMA | |
| MRR | Measurement Residual Ratio | FEMA | |
| MRRS | MERS Response Reporting System | FEMA | |
| MRT | Medical Response Team | FEMA | |
| MRV | Mobile Response Van | FEMA | |
| MRV | Mobile Response Vehicle | FEMA | |
| MRV | Multi-Radio Van | FEMA | |
| MRV | Multi-Radio Vehicle | FEMA | |
| MS&G | Models, Simulations, and Games | FEMA | |
| MS-1 | Medical Service – 1 (Hospital) | FEMA | |
| MS4 | municipal separate storm water sewer system | DHS | |
| MSA | Metropolitan Statistical Area | FEMA | |
| MSA | Modeling, Simulation, & Analysis | FEMA | |
| MSA | Mutual Support Agreement | FEMA | |
| MSC | Major Subordinate Command | FEMA | |
| MSC | Map Service Center | FEMA | |
| MSC | Marine Safety Center | FEMA | |
| MSC | Mobile Switching Center | DHS | |
| MSCA | Military Support to Civil Authorities | FEMA | |
| MSCLEA | Military Support to Civilian Law Enforcement Agencies | FEMA | |
| MSD | Military Support Detachment | FEMA | |
| MSD | Musculoskeletal Disorder | FEMA | |
| MSDS | Manpower Standards Development System | FEMA | |
| MSDS | Material Safety Data Sheet | FEMA | |
| MSE | MERS Support Element | FEMA | |
| MSEL | Master Scenario Events List | FEMA | |
| MSF | Mobile Screening Force | TSA | |
| MSFCMA | Magnuson-Stevens Fisheries Conservation and Management Act | FEMA | |
| MSFO | Marine Safety Field Office | FEMA | |
| MSHA | Mine Safety and Health Administration | FEMA | |
| MSI | Minority-Serving Institution | CRCL | MGMT | |
| MSIA | Metadata Standards for Information Assurance | FEMA | |
| MSIC | Missile and Space Intelligence Center | S&T | |
| MSIIP | Minority Serving Institutions Internship Program | FEMA | |
| MSIS | Marine Safety Information System | FEMA | |
| MSIs | Minority Serving Institutions | FEMA | |
| MSL | Mean Sea Level | FEMA | |
| MSLO | Military Support Liaison Officer | FEMA | |
| MSO | Maritime Security Operations | USCG | |
| MSO | Marine Safety Office | FEMA | |
| MSO | Military Support Officer | FEMA | |
| MSPB | Merit Systems Protection Board | FEMA | MGMT | OPA | |
| MSR | Main Supply Route | FEMA | |
| MSRAM | Maritime Security Risk Assessment Model | USCG | CISA | |
| MSST | Maritime Safety and Security Team | USCG | |
| MST | Management Support Team | FEMA | |
| MST | Master | FEMA | |
| MST | METRO Strike Team | FEMA | |
| MST | Mountain Standard Time (GMT - 7) | FEMA | |
| MSU | Management Support Unit | FEMA | |
| MSU | Marine Safety Unit | FEMA | |
| MSU | Medical Support Unit | FEMA | |
| MSW | municipal solid waste | DHS | |
| MT | Megaton | FEMA | |
| MT | metric ton | FEMA | |
| MT | Mitigation (FEMA/MT) | DHS | |
| MTA | Material Transfer Area | FEMA | |
| MTF | Medical Treatment Facility | FEMA | |
| MTI | Methodology Technical Implementation | CISA | |
| MTMC | Military Traffic Management Command | FEMA | |
| MTOE | Modified Table of Organization and Equipment | FEMA | |
| MTOW | Maximum Takeoff Weight | TSA | |
| MTP | Master Trainer Program | FEMA | |
| MTR | Maritime Training Response | FEMA | |
| MTR | Military Training Route | FEMA | |
| MTS | marine transportation system | PLCY | |
| MTSA | Maritime Transportation Security Act | TSA | USCG | |
| MTSP | Mass Transit Security Program | TSA | |
| MTT | Mobile Training Team | FEMA | |
| MTTR | mean time to repair | MGMT | |
| MTTRS | mean time to restore service | MGMT | |
| MUDAC | Meteorological and Unified Dose Assessment Center | FEMA | |
| MUF | Materials Unaccounted For | FEMA | |
| MUTCD | Manual of Uniform Traffic Control Devices | FEMA | |
| MVGP | Mission, Vision and Guiding Principles | FEMA | |
| MW | megawatt | FEMA | |
| MW | Microwave | FEMA | |
| MW | Mount Weather | FEMA | |
| MWA | Metropolitan Washington Area | FEMA | |
| MWCOG | Metropolitan Washington Council of Governments | FEMA | |
| MWEAC | Mount Weather Emergency Action Center | FEMA | |
| MWEOC | Mount Weather Emergency Operations Center | FEMA | |
| MWFRS | Main Wind Force Resisting System | FEMA | |
| MWH | megawatt hour | FEMA | |
| MWMD | Mount Weather Management Division | FEMA | |
| MWS | Marine Weather Statement | FEMA | |
| MXMS | Mixmaster | FEMA | |
| M-ZONE | High Mudflow Hazard Area | FEMA | |
| N/A | Not affected | DHS | |
| N/A | Not applicable | DHS | |
| N/P | Not Provided | FEMA | |
| N2O | nitrous oxide | DHS | |
| NA | Northeastern Area | FEMA | |
| NA | North American | DHS | |
| NAAE | National Association of Agricultural Employees | MGMT | |
| NAAK | Nerve Agent Antidote Kit | FEMA | |
| NAAP | Newport Army Ammunition Plant | FEMA | |
| NAAQS | National Ambient Air Quality Standards | FEMA | |
| NAAT | North American Aviation Trilateral | TSA | |
| NAC | National Advisory Committee | FEMA | |
| NAC | National Advisory Council | FEMA | |
| NAC | Nebraska Avenue Complex | DHS | |
| NAC | National Agency Check | FEMA | MGMT | |
| NAC/AEGL | National Advisory Committee on Acute Exposure Guidelines Levels (for Chemical Substances) | FEMA | |
| NACA | National Air Carrier Association | TSA | |
| NACCHO | National Association of County and City Health Officials | FEMA | |
| NACD | National Association of Corporate Directors | FEMA | |
| NACDD | National Association of Councils on Developmental Disabilities | CRCL | |
| NACE | National Association of County Engineers | FEMA | |
| NACI | National Agency Check with Inquiries | FEMA | |
| NACIC | National Counterintelligence Center | I&A | |
| NACo | National Association of Counties | FEMA | |
| NACS | NEMIS Access Control System | FEMA | |
| NACS | Netware Asynchronous Communications Service | FEMA | |
| NACWA | National Association of Clean Water Agencies | FEMA | |
| NAD27 | North American Datum of 1927 | FEMA | |
| NAD83 | North American Datum of 1983 | FEMA | |
| NADB | National Assets Data Base | CISA | |
| NADO | National Association of Development Organizations | FEMA | |
| NAEMT | National Association of Emergency Medical Technicians | FEMA | |
| NAERG | North American Emergency Response Guidebook | FEMA | |
| NAFAX | National Facsimile Network | FEMA | |
| NAFSMA | National Association of Flood & Stormwater Management Agencies | FEMA | |
| NAFTA | North America Free Trade Agreement | FEMA | |
| NAFTZ | National Association of Free Trade Zones | CBP | ICE | |
| NAHB | National Association of Home Builders | FEMA | |
| NAHERC | National Animal Health Emergency Response Corps | FEMA | |
| NAHF | National Association of Hispanic Firefighters | FEMA | |
| NAI | North American Initiative | PLCY | |
| NaI(Tl) | Sodium Iodide Doped with Thallium (scintillator) | FEMA | |
| NAIC | National Association of Insurance Commissioners | FEMA | |
| NAII | National Association of Independent Insurers | FEMA | |
| NAIIA | National Association of Independent Insurance Adjusters | FEMA | |
| NAILS | National Automated Immigration Lookout System | CBP | USCG | USCIS | |
| NAMRI | Naval Medical Research Institute | FEMA | |
| NANDA | North American Nuclear Detection Architecture | FEMA | |
| NAOC | National Airborne Operations Center | FEMA | |
| NAOS | North American Atmospheric Observing System | FEMA | |
| NAP | Nuclear Assessment Program | S&T | |
| NAP | National AIDS Policy | FEMA | |
| NAPA | National Academy of Public Administration | FEMA | |
| NAPI | National Arson Prevention Initiative | FEMA | |
| NAPO | National Organization of Police Organizations | CISA | |
| NARA | National Archives and Records Administration | DHS | |
| NARAC | National Atmospheric Release Advisory Center | FEMA | CISA | |
| NARCL | Nuclear Accident Response Capabilities Listing | FEMA | |
| NARFE | National Active & Retired Federal Employees Association | FEMA | |
| NARP | National Agriculture Release Program | CBP | |
| NARP | Nuclear Accident Response Plan | FEMA | |
| NARP | Nuclear Accident Response Procedures | FEMA | |
| NARS | National Archives and Records Service | MGMT | |
| NARSAP | National Advanced Remote Sensing Applications Program | FEMA | |
| NARTC | National Advanced Resource Technology Center | FEMA | |
| NAS | National Academy of Sciences | FEMA | |
| NASA | National Aeronautics and Space Administration | DHS | |
| NASAR | National Association for Search and Rescue | FEMA | CISA | |
| NASBLA | National Association of State Boating Law Administrators | USCG | |
| NASCDD | National Association of State Civil Defense Directors | FEMA | |
| NASCIO | National Association of State Chief Information Officers | S&T | MGMT | |
| NASEMSD | National Association of State Emergency Medical Services Directors | FEMA | |
| NASEMSO | National Association of State Emergency Medical Officials | FEMA | S&T | CWMD | |
| NASF | National Association of State Foresters | FEMA | |
| NASFM | National Association of State Fire Marshals | FEMA | |
| NASNA | National Association of 9-1-1 Administrators | FEMA | |
| NASTTPO | National Association of State Title Three Program Officials | FEMA | |
| NASULGC | National Association of State Universities and Land-Grant Colleges | USCIS | S&T | |
| NATA | National Air Transportation Association | TSA | S&T | |
| NATCA | National Air Traffic Controllers Association | TSA | |
| NATO | North Atlantic Treaty Organization | FEMA | PLCY | |
| NAVAID | Navigational Aid | FEMA | |
| NAVC | National Audio-Visual Center | FEMA | |
| NAVD88 | North American Vertical Datum of 1988 | FEMA | |
| NAWAS | National Warning System | FEMA | |
| NAWAS/BCC | National Warning System Bridge and Conference Controller | FEMA | |
| NAWC | National Association of Water Companies | FEMA | |
| NAWE | National Association for Waterfront Employees | MGMT | |
| NBACC | National Biodefense Analysis and Countermeasures Center | S&T | MGMT | |
| NBAF | National Bio- and Agro-Defense Facility | S&T | |
| NBC | Nuclear, Biological and Chemical | FEMA | |
| NBFAC | National Bioforensic Analysis Center | S&T | |
| NBFSPQ | National Board on Fire Service Professional Qualifications | FEMA | |
| NBHPP | National Bioterrorism Hospital Preparedness Program | FEMA | |
| NBIC | National Biosurveillance Integration Center | CWMD | |
| NBIS | National Biosurveillance Integration System | FEMA | |
| NBSAC | National Boating Safety Advisory Council | USCG | |
| NBSCAB | National Bomb Squad Commanders Advisory Board | FEMA | |
| NBSG | National Biosurveillance Group | FEMA | |
| NBTA | National Business Travel Association | TSA | |
| NBWDA | National BioWeapons Defense Analysis Center | S&T | |
| NC&B | Nuclear, Chemical and Biological | FEMA | |
| NCA | National Command Authority | FEMA | |
| NCAI | National Congress of American Indians | FEMA | |
| NCAP | National Corrective Action Program | FEMA | |
| NCAR | National Center for Atmospheric Research | FEMA | |
| NCAS | National Cyber Alert System | S&T | |
| NCATF | National Church Arson Task Force | FEMA | |
| NCAVC | National Center for the Analysis of Violent Crime | FEMA | |
| NCBFAA | National Customs Brokers and Forwarders Association of America | CBP | |
| NCC | National Continuity Coordinator | MGMT | |
| NCC | National Coordinating Center (for Telecommunications) | FEMA | |
| NCCC | National Council of the Churches of Christ | FEMA | |
| NCCC | National Civilian Conservation Corps (AmeriCorps) | FEMA | |
| NCCG | National Civilian Community Group | FEMA | |
| NCD | National Council on Disability | CRCL | |
| NCDDM | National Center for Disaster Decision Making | FEMA | CISA | |
| NCE | National Counterintelligence Executive | I&A | |
| NCEH | National Center for Environmental Health | FEMA | CISA | S&T | |
| NCEP | National Centers for Environmental Prediction | FEMA | |
| NCFPD | National Center for Food Protection and Defense | S&T | |
| NCFS | National Center for Forensic Science | ICE | |
| NCGIA | National Center for Geographic Information and Analysis | FEMA | |
| NCIC | National Crime Information Center | CBP | FEMA | |
| NCID | National Center for Infectious Diseases | FEMA | |
| NCIS | Naval Criminal Investigative Service | ICE | I&A | PLCY | PRIV | |
| NCISP | National Criminal Intelligence Sharing Plan | FEMA | |
| NCIT | National Council on International Trade (see NCITD) | FEMA | |
| NCITD | National Council on International Trade and Development | FEMA | |
| NCIX | Office of National Counterintelligence Executive | I&A | |
| NCJA | National Criminal Justice Association | FEMA | |
| NCLIS | National Commission on Libraries and Information Science | S&T | |
| NCMEC | National Center for Missing and Exploited Children | ICE | |
| NCO | Non-Commissioned Officer | FEMA | |
| NCP | National Continuity Programs (FEMA/NCP) | DHS | |
| NCP | National Oil and Hazardous Substances Pollution Contingency Plan (aka: "National Contingency Plan") | FEMA | |
| NCPC | National Capitol Planning Commission | FEMA | |
| NCPC | National Crime Prevention Council | FEMA | |
| NCPI | National Committee on Property Insurance | FEMA | |
| NCR | National Capitol Region | FEMA | |
| NCRC | National Capitol Region Coordination (FEMA/NCRC) | DHS | |
| NCRCG | National Cyber Response Coordination Group | FEMA | |
| NCRPM | National Council on Radiation Protection and Measurements | FEMA | |
| NCS | non-critical sensitive [position] | MGMT | |
| NCS | National Communications System | FEMA | CISA | I&A | |
| NCS | Net Control System | FEMA | |
| NCSA | National Center for Super-computing Applications | FEMA | |
| NCSA | North Carolina Sheriffs' Association | FEMA | |
| NCSC | National Cybersecurity Center | DHS | |
| NCSD | National Cybersecurity Division | CISA | S&T | I&A | |
| NCSD | National Communications System Directive | FEMA | |
| NCSH | National Communications System Handbook | FEMA | |
| NCSL | National Council of State Legislators | CISA | |
| NCSLLET | National Center for State & Local Law Enforcement Training, Advisory Committee to the | FLETC | |
| NCSM | National Communications System Manual | FEMA | |
| NCSP | National Cyber Security Partnership | CISA | OGC | |
| NCSP | National Communications Support Plan | FEMA | |
| NCSRM | National Communications Systems Regional Manager | FEMA | |
| NCSSA | National Cartographic Standards for Spatial Accuracy | FEMA | |
| NCTC | National Counterterrorism Center | DHS | |
| NCUA | National Credit Union Administration | FEMA | MGMT | OPA | |
| NCVIP | National Child Victim Identification Program | USSS | |
| NDA | National Defense Area | FEMA | |
| NDA | Nevada Department of Agriculture | FEMA | |
| NDA | Non-Disclosure Agreement | FEMA | | [Page truncated to keep GeezerVison snappy.]
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