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| AAA | American Anthropological Association |
| AAEI | American Association of Exporters and Importers |
| AAI | Ansar al-Islam |
| ABB | Alex Boncayao Brigade |
| AC (1) | Air Conditioner/Air Conditioning |
| AC (2) | Alternating Current |
| AC (3) | Area of Concern |
| ACC | American Chemistry Council |
| ACE | Automated Commercial Environment (CBP) |
| ACI | American Concrete Institute |
| ACLA | American Coalition of Life Activists |
| ACLU | American Civil Liberties Union |
| ACMT | American College of Medical Toxicology |
| ACV | Actual Cash Value (NFIP) |
| ADA | Americans with Disabilities Act of 1990, as Amended 2008 (US) |
| AD/CVD | Antidumping/Countervailing Duty (DCBP) |
| ADF | Allied Democratic Forces (DRC) |
| AEG | Allgemeine Elektricitfäts Gesellschaft (German General Electric) |
| AEPA | Animal Enterprise Protection Act of 1992 (US) |
| AETA | Animal Enterprise Terrorism Act of 2006 (US) |
| AFDL | Alliance of the Democratic Forces for the Liberation of Congo-Zaire |
| AFISRA | Air Force Intelligence, Surveillance and Reconnaissance Agency (now designated 25th Air Force) |
| AFP | Agence France-Presse |
| AFPAK | Afghanistan-Pakistan |
| AFSOC | US Air Force Special Operations Command |
| AGFA | Aktien-Gesellschaft für Analin Fabrikation |
| AGU | American Geophysical Union |
| AI | Artificial Intelligence |
| AIDA | Asteroid Impact and Deflection Assessment |
| AIM | Asteroid Impact Monitor (NASA) |
| AISC | American Institute of Steel Construction |
| AJK | Azad (Free) Jammu & Kashmir |
| AK | Alaska |
| AK-47 | Avtomat Kalashnikova-47 |
| AKA | Also Known As |
| AKP (or JDP) | Justice and Development Party (Turkish: Adalet ve Kalkinma Partisi) (Turkey) |
| AL | Alabama |
| ALF | Animal Liberation Front |
| AM | Amplitude Modulation |
| AMU (1) | American Military University |
| AMU (2) | Aligarh Muslim University |
| AN | Aryan Nations |
| ANA | Afghan National Army |
| ANFO | Ammonium Nitrate Fuel Oil |
| ANI | Asian News International |
| ANO | Abu Nidal Organization |
| ANSI | American National Standards Institute |
| AO | Area of Operations |
| AP | Associated Press |
| APA | American Planning Association |
| APHC | All-Parties Hurriyat (Freedom) Conference (Kashmir) |
| APT | Advanced Persistent Threat |
| APU | American Public University |
| AQ | al-Qaeda |
| AQAP | al-Qaeda in the Arabian Peninsula |
| AQIM | al-Qaeda in the Islamic Maghreb |
| AR | Arkansas |
| ARC (1) | American Red Cross |
| ARC (2) | Ames Research Center (NASA) |
| ARES | Amateur Radio Emergency Service |
| ARFF | Animal Rights Foundation of Florida |
| ARM | Asteroid Redirect Mission (NASA) |
| ARPA | Advanced Research Projects Agency |
| ARPANET | Advanced Research Projects Agency Network |
| ARRL | American Radio Relay League |
| AS | Autonomous System |
| ASC | Area of Special Concern |
| ASCE | American Society of Civil Engineers |
| ASEAN | Association of Southeast Asian Nations |
| ASF | Afghan Security Forces |
| ASG | Abu Sayyaf Group |
| ASHP-CML | American Social History Project-Center for Media and Learning |
| ASPR | Assistant Secretary for Preparedness and Response (US DHHS) |
| ATC | Applied Technology Council |
| ATF | US Bureau of Alcohol, Tobacco, Firearms, and Explosives (US DoJ) |
| ATLAS | Asteroid Terrestrial-impact Last Alert System |
| AU (1) | African Union |
| AU (2) | Australia |
| AU (3) | Astronomical Unit |
| AUMF | Authorization for Use of Military Force |
| AZ | Arizona |
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| BARDA | Biological Advanced Research and Development Authority |
| BART | Bay Area Rapid Transport (San Francisco, CA) |
| BASF | Bayrischen Analin und Soda-Fabrik |
| BATS | Bomb Arson Tracking System (US) |
| BAU | Behavioral Analysis Unit (FBI) |
| BBC | British Broadcasting Corporation |
| BCA | Benefit-Cost Analysis |
| BCR | Benefit-Cost Ratio |
| BFE | Base Flood Elevation (NFIP) |
| BG Brigade | Bhimbar Gali Brigade (India) |
| BI | Business Intelligence |
| BIF | Benevolence International Foundation |
| BJP | Bharatiya Janata Party (India) |
| BLS | Basic Life Support |
| BMAP | Bomb-Making Materials Awareness Program (US) |
| BND | Bundesnachrichtendienst (Germany) |
| BOP | Federal Bureau of Prisons (DoJ) |
| BPA | Business Process Analysis |
| BSF | Border Security Force (India) |
| BTU | British Thermal Unit |
| BZP | Buffer Zone Plan |
| BZPP | Buffer Zone Protection Program |
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| CA (1) | California |
| CA (2) | Certificate Authority |
| CAFTA-DR | Dominican Republic-Central America Free Trade Agreement |
| CAIR | Council on American-Islamic Relations |
| CAP | Corrective Action Plan |
| CAR (1) | Capabilities Assessment for Readiness |
| CAR (2) | Central African Republic |
| CARVER | Criticality, Accessibility, Recuperability [Recoverability], Vulnerabilty, Effects on Population, Recognizability |
| CATV | Cable Television |
| CBM | Confidence-Building Measure |
| CBP | US Customs and Border Protection (DHS) |
| CBRNE | Chemical, Biological, Radiological, Nuclear, Explosive |
| CCO | Chief Compliance Officer |
| CCR | Center for Constitutional Rights |
| CCTV | Closed-Circuit Television |
| CDAT | Chemical Data Access Tool (EPA) |
| CDC | Centers for Disease Control and Prevention (DHHS) |
| CDI (1) | Center for Defense Information |
| CDI (2) | Cyberterrorism Defense Initiative (FEMA) |
| CD-ROM | Compact Disc-Read Only Memory |
| CDR | Chemical Data Reporting |
| CDT | Central Daylight Time (GMT/UTC-5) |
| CENTCOM | US Central Command |
| CENTO | Central Treaty Organization |
| CEO (1) | Chief Elected Official |
| CEO (2) | Chief Ethics Officer |
| CEO (3) | Chief Executive Officer |
| CEPEC | California Earthquake Prediction and Evaluation Council (US) |
| CERN | European Organization for Nuclear Research (French: Organisation Européenne pour la Recherche Nucléaire) |
| CERT (1) | Community Emergency Response Team (US) |
| CERT (2) | Computer Emergency Response Team (US) |
| CFATS | Chemical Facility Anti-Terrorism Standards (US) |
| CFIX | Central Florida Intelligence Exchange |
| CFL | Ceasefire Line |
| CFR (1) | US Code of Federal Regulations |
| CFR (2) | Council on Foreign Relations |
| CGC | Continuity Guidance Circular (US) |
| CHEMM | Chemical Hazards Emergency Medical Management |
| CHEMM-IST | CHEMM Intelligent Syndromes Tool |
| CHEMTREC | Chemical Transportation Emergency Cente |
| CI (1) | Counter Intelligence |
| CI (2) | Critical Infrastructure |
| CIA | US Central Intelligence Agency |
| CIKR | Critical Infrastructure And Key Resources |
| CIO | Chief Information Officer |
| CIP | Critical Infrastructure Protection |
| CIPAC | Critical Infrastructure Partnership Advisory Council |
| CIP/HLS | Critical Infrastructure Protection and Homeland Security |
| CJI | Criminal Justice Institute (U Arkansas) |
| CM (1) | Configuration Management |
| CM (2) | Critical Manufacturing |
| CMGP | Coastal and Marine Geology Program |
| CMU | Communications Management Unit (BOP) |
| CNDP | National Congress for the Defense of the Congolese People |
| CNO | Computer Network Operations |
| CO | Colorado |
| COAC | Commercial Operations Advisory Committee (CBP) |
| COG | Continuity of Government |
| COIN | Counter Insurgency |
| COOP | Continuity of Operations |
| COP | Common Operating Picture |
| CPG | Comprehensive Preparedness Guide |
| CPL | Center for Public Leadership (Harvard) |
| CPU | Central Processing Unit |
| CQ | Congressional Quarterly |
| CR (1) | Change Request |
| CR (2) | Comprehensive Review |
| CREW | Cascadia Regional Earthquake Workgroup |
| CRPF | Central Reserve Police Force (India) |
| CRS | Congressional Research Service |
| CRT | Cathode Ray Tube |
| CSA (1) | Confederate States of America |
| CSA (2) | Covenant, Sword, and Arm of the Lord |
| CSDMS | Community Surface Dynamics Modeling System |
| CSET | Cyber Security Evaluation Tool |
| CSI (1) | Chemical Substances Inventory (TSCA) |
| CSI (2) | Container Security Initiative |
| CSI (3) | Customer Satisfaction Index |
| CSM | Christian Science Monitor |
| CSSP | Control Systems Security Program |
| CST | Central Standard Time (GMT/UTC-6) |
| CT | Connecticut |
| CTC | Counterterrorism Center (CIA) |
| C-TPAT | Customs-Trade Partnership Against Terrorism |
| CUI | Controlled Unclassified Information |
| CUNY | City University of New York |
| CUSEC | Central US Earthquake Consortium |
| CVO | Cascades Volcano Observatory (VHP) |
| CVV | Code Verification Value |
| CWG | Continuity Working Groupk |
| CYBERCOM | Cyber Command (US) |
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| DAB | Digital Audio Broadcasting |
| DARPA | Defense Advanced Research Projects Agency (US) |
| DART | Double Asteroid Redirection Test (NASA) |
| DBA (1) | Database Administrator |
| DBA (2) | Doing Business As |
| DBIR | Data Breach Investigations Report (Verizon) |
| DC (1) | Direct Current |
| DC (2) | District of Columbia |
| DDoS | Distributed Denial of Service |
| DE | Deleware |
| DEOC | Department Emergency Operations Center |
| DFLP | Democratic Fron for the Liberation of Palestine |
| DFO | Dartmouth Flood Observatory |
| DHCPP | Division of High-Consequence Pathogens and Pathology (NCEZID) |
| DHL | [Adrian ]Dalsey[, Larry] Hillblom[, and Robert] Lynn |
| DHS | US Department of Homeland Security |
| DHHS or HHS | US Department of Health and Human Services |
| DIA | US Defense Intelligence Agency |
| DIB | Defense Industrial Base |
| DISA | Defense Information Systems Agency (US) |
| DLR | German Aerospace Center |
| DMAT | Disaster Medical Assistance Team (US) |
| DMORT | Disaster Mortuary Team (US) |
| DNDO | US Domestic Nuclear Detection Office (DHS) |
| DNI | US Director of National Intelligence |
| DNS | Domain Name Server (or System) |
| DoC or DOC | US Department of Commerce |
| DoD or DOD | US Department of Defense |
| DoE or DOE | US Department of Energy |
| DoI or DOI | US Department of the Interior |
| DoJ or DOJ | US Department of Justice |
| DoS (1) | Denial of Service |
| DoS or DOS (2) | US Department of State |
| DoT or DOT | US Department of Transportation |
| DRC | Democratic Republic of the Congo |
| DVBD | Division of Vector-Borne Diseases (NCEZID) |
| DVD | Digital Video/Versatile Disc |
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| EC | European Community |
| EDT | Eastern Daylight Time (GMT/UTC-4) |
| EEI | Essential Elements of Information |
| EERI | Earthquake Engineering Research Institute |
| EF | Essential Function |
| EHF | Extremely High Frequency |
| EHI | Energy Helicity Index |
| EHP | Environmental Planning and Historic Preservation |
| EIJ | Egyptian Islamic Jihad (Eqypt) |
| EIPB | Explosives Industry Programs Branch (ATF) |
| EIS | Environmental Impact Statement |
| EISA | Energy Independence and Security Act of 2007 (US) |
| ELF (1) | Earth Liberation Front |
| ELF (2) | Extremely Low Frequency |
| ELF (The Original) | Environmental Life Force |
| ELINT | Electronic Intelligence |
| EMA | Emergency Management Agency |
| EMAC | Emergency Management Assistance Compact (NEMA 2) |
| EMI | Emergency Management Institute (FEMA) |
| EMO | Executive Management Office |
| EMP | Electromagnetic Pulse |
| EMR-ISAC | Emergency Management and Response Information Sharing and Analysis Center |
| EMS | Emergency Medical Services |
| ENAP | Empresa Nacional del Petróleo (National Petroleum Company, Chile) |
| ENSO | El Niño/La Niña Southern Oscillation |
| EOC | Emergency Operations Center |
| EOD | Explosive Ordnance Disposal |
| EOP | Emergency Operations Plan |
| EPA | US Environmental Protection Agency |
| EPACT | Energy Policy Act of 2005 (US) |
| EPCD | Explosive Pest Control Device |
| EPI | Emergency Public Information |
| ERP | Emergency Response Plan |
| ESA | European Space Agency |
| ESF (1) | Economic Support Funds |
| ESF (2) | Emergency Support Function |
| ESRI | Environmental Systems Research Institute |
| ESS | Emergency Services Sector |
| EST | Eastern Standard Time (GMT/UTC-5) |
| ET | Extraterrestrial |
| ETA | Basque Homeland and Freedom (Basque: Euskadi Ta Askatasuna) |
| ETIM | East Turkistan Islamic Movement |
| EU | European Union |
| EWIDS | Early Warning Infectious Disease Surveillance (US) |
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| FAR | Rwandese Armed Forces |
| FARC or FARC-EP | Revolutionary Armed Forces of Colombia – People's Army (Spanish: Fuerzas Armadas Revolucionarias de Colombia – Ejército del Pueblo) |
| FARDC | Democratic Republic of Congo Armed Forces |
| FAS (1) | Federation of American Scientists |
| FAS (2) | Foreign Agriculture Service (USDA) |
| FASCAT | Food and Agriculture Sector Criticality Assessment Tool |
| FASCC | Food and Agriculture Sector Coordinating Council |
| FAST | Formulation and Assessment Support Team (NASA) |
| FATA | Federally Administered Tribal Areas (Pakistan) |
| FATD | Firearms and Ammunition Technology Division (ATF) |
| FBI | US Federal Bureau of Investigation |
| FBIIC | Financial and Banking Information Infrastructure Committee |
| FC | Frontier Corps (Pakistan) |
| FCC | Federal Communications Commission (US) |
| FCD | Federal Continuity Directive |
| FC-FS | First Come-First Served (TRQ, USDA) |
| FDA | US Food and Drug Administration |
| FDLR | Democratic Forces for the Liberation of Rwanda |
| FedEx | Federal Express |
| FedRAMP | Federal Risk and Authorization Management Program (US) |
| FEID | Firearms & Explosives Industry Division (ATF) |
| FEMA | US Federal Emergency Management Agency |
| FERPA | Family Educational Rights and Privacy Act (US) |
| FHBM | Flood Hazard Boundary Map (NFIP) |
| FICO | Flood Insurance Claims Office (NFIP) |
| FIF | Falah-e-Insaniyat Foundation (Kashmir) |
| FIMA | Flood Insurance and Mitigation Administration (FEMA) |
| FIPB | Firearms Industry Programs Branch (ATF) |
| FIRM | Flood Insurance Rate Map (NFIP) |
| FISA | Foreign Intelligence Surveillance Act of 1978 (US) |
| FL | Florida |
| FLASH | Federal Alliance for Safe Homes |
| FLQ | Front du libération du Québec |
| FM | Frequency Modulation |
| FNI | Front for National Integration (DRC) |
| FOIA | Freedom of Information Act of 1966, amended 2007 and 2009 (US) |
| FOUO | For Official Use Only |
| FPC | Federal Privacy Council (US) |
| FPS | Federal Protective Service (DHS) |
| FRB | Fast Radio Burst |
| FRO | Flood Response Office (NFIP) |
| FRP | Federal Response Plan (US) |
| FS-ISAC | Financial Services - Information Sharing and Analysis Center |
| FSSCC | Financial Services Sector Coordinating Council |
| FTA | Free Trade Agreement |
| FTB | Firearms Technology Branch (ATF) |
| FTO | Foreign Terrorist Organization |
| FY | Fiscal Year |
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| GA (1) | Lieutenant General Ghulam Ahmed Khan (Pakistan) |
| GA (2) | Georgia |
| GAO | Government Accountability Office |
| GAR | Governor's Authorized Representative |
| GCA | Gun Control Act of 1968 (US) |
| GCC | Government Coordinating Council |
| GCHQ | Government Communications Headquarters (UK) |
| GDP | Gross Domestic Product |
| GHG | Greenhouse Gas or Gasses |
| GHQ | General Headquarters of the Pakistan Army |
| GMT or GT | Greenwich Mean Time (See also UTC.) |
| GMU | George Mason University |
| GN | General Note |
| GPO | US Government Printing Office |
| GPS | Global Positioning System |
| GRaDER | Graduated Radiological/Nuclear Detector Evaluation and Reporting (US) |
| GREAT | Gang Resistance Education and Training (US ATF) |
| GRF | Global Relief Foundation |
| GSA | Geology Society of America |
| GT | See GMT. |
| GW | Gigawatts |
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| HACAN | Heathrow Association for the Control of Aircraft Noise (UK) |
| HAZMAT | Hazardous Materials |
| HD | High Definition |
| HEU | Highly Enriched Uranium |
| HF | High Frequency |
| HHS or DHHS | US Department of Health and Human Services |
| HI | Hawaii |
| HLF | Holy Land Foundation for Relief and Development |
| HLW | High-Level Radioactive Waste |
| HM | Hizb-ul-Mujahideen (Kashmir) |
| HME | Home-Made Explosive |
| HMLS | Homeland Security Studies |
| HORNET | High-speed Onion Routing NETwork |
| HPH | Healthcare and Public Health |
| HPP | Hospital Preparedness Program |
| HSIN | Homeland Security Information Network |
| HSI | Homeland Security Institute (US) |
| HSIN-CS | Homeland Security Information Network - Critical Sector |
| HSPD | Homeland Security Presidential Directive (US) |
| HTML | Hypertext Markyp Language |
| HTSUS | Harmonized Tariff Schedule of the United States |
| HTTP | Hypertext Transport Protocol |
| HTTP/S | Hypertext Transport Protocol/Secure |
| HUD | US Department of Housing and Urban Development |
| HuA or HUA | Harkat-ul-Ansar (now HUM; Pakistan) |
| HuJI or HUJI | Harkat ul Jihadi-i-Islami (Pakistan) |
| HuM or HUM | Harkat-ul-Mujahideen (Pakistan) |
| HuT or HUT | Hizb-ub-Tehreer (UK) |
| HUMINT | Human Intelligence |
| HVA | Hazard Vulnerability Assessment |
| HVAC | Heating, Ventilation, and Air Conditioning |
| HVT | High Value Target |
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| IA (1) | Intelligence Analysis |
| IA (2) | Intelligence Analyst |
| IA (3) | Iowa |
| IACP | International Association of Chiefs of Police |
| IAEA | International Atomic Energy Agency |
| IAP | Incident Action Plan |
| IAU | International Astronomical Union |
| IBI | Internal Business Information |
| ICANN | Internet Corporation for Assigned Names and Numbers |
| ICC (1) | International Chamber of Commerce |
| ICC (2) | International Code Council |
| ICC (3) | International Criminal Court |
| ICE | US Immigration and Customs Enforcement (DHS) |
| ICP | Incident Command Post |
| ICRC | International Committee of the Red Cross |
| ICRP | International Commission on Radiological Protection |
| ICS (1) | Incident Command System (US) |
| ICS (2) | Industrial Control System |
| ICT | International Policy Institute for Counter-Terrorism |
| ICTR | International Criminal Tribunal for Rwanda |
| ID (1) | Idaho |
| ID (2) | Identifier or Identification |
| IDA | In Defense of Animals |
| IDF | Israel Defense Forces |
| IEC | Independent Election Commission (Afghanistan) |
| IED | Improvised Explosive Device |
| IETF | Internet Engineering Task Force (ISOC) |
| I.G. Farben | Interessen-Gemeinschaft Farbenindustrie, A.G. |
| IIF | International Islamic Front for Jihad against the Jew and Crusaders (al-Qaeda) |
| IJK | Indian-controlled Jammu & Kashmir |
| IL | Illinois |
| IMB | International Maritime Bureau (ICC) |
| IMET | International Military Education and Training |
| IMF | International Monetary Fund |
| IMINT | Imagery Intelligence |
| IMPACT | The Incident Management Preparedness and Coordination Toolkit (ORNL) |
| IMU | Islamic Movement of Uzbekistan (Uzbekistan) |
| IN | Indiana |
| INLETS | Intelligence and Law Enforcement Training Seminar |
| InPhO | Indiana Philosophy Ontology Project |
| INRP | Initial National Response Plan |
| INSTAAR | Institute of Arctic and Alpine Research |
| IOK | India-Occupied Kashmir |
| IP (1) | Internet Protocol |
| IP (2) | Office of Infrastructure Protection (DHS) |
| IPAWS | Integrated Public Alert and Warning System |
| IPCC | Intergovernmental Panel on Climate Change |
| IPT | Integrated Project Team |
| IPTK | International People's Tribunal on Human Rights in Indian-Administered Kashmir |
| IRA | Irish Republican Army |
| IRC | International Residential Code |
| IRIS (1) | Incorporated Research Institutions for Seismology |
| IRIS (2) | Integrated Risk Information System (EPA) |
| IRS | US Internal Revenue Service |
| IRTPA | Intelligence Reform and Terrorism Prevention Act of 2004 (US) |
| IS | Information Systems |
| ISAC | Information Sharing and Analysis Center |
| ISAF | International Security Assistance Force (US/NATO) |
| ISI | Inter-Services Intelligence (Pakistan) |
| ISIL | Islamic State in Iraq and the Levant (Iraq & Syria; Same as ISIS.) |
| ISIS | Islamic State in Iraq and Syria (Iraq & Syria; Same as ISIL.) |
| ISOC | Internet Society |
| ISP | Internet Service Provider |
| ISTA | Internet Sacred Text Archive |
| IT (1) | Italy |
| IT (2) | Information Technology |
| ITCZ | Intertropical Convergence Zone |
| IT-ISAC | Information Technology - Information Sharing and Analysis Center |
| ITU | International Telegraph/Telecommunications Union |
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| JCPA | Jerusalem Center for Public Affairs |
| JDL | Jewish Defense League |
| JeM or JEM (or JiM or JIM) | Jaish-e-Mohammed |
| JHU/APL | Johns Hopkins University Applied Physics Laboratory |
| JI | Jama'at-i-Islami (Pakistan) |
| JIC | Joint Information Center |
| JiM or JIM (or JeM or JEM) | Jaish-i-Mohammed |
| JK or J-K or J&K | Jammu & Kashmir |
| JKLF | Jammu & Kashmir Liberation Front |
| JuD or JUD | Jama'at-ud-Da'awa or Jamaat-ud-Daawa (Kashmir) |
| JuI or JUI | Jamiat-ul-Ulema Islam |
| JuI-F or JUI-F | Jamiat-ul-Ulema Islam group led by Fazlur Rahman |
| JuI-Q or JUI-Q | Jamiat-ul-Ulema Islam group led by Ajmal Qudri |
| JuI-S or JUI-S | Jamiat-ul-Ulema Islam group led by Sami-ul-Haq |
| JVM | Joint Verification Mechanism |
| JWG Brigade | Jharen Wali Gali Brigade (India) |
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| KKK | Ku Klux Klan |
| KP | Khyber-Pakhtunkhwa (Pakistan) |
| KS | Kansas |
| KW | Kilowatts |
| KY | Kentucky |
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| LA | Louisiana |
| LA-SAFE | Louisiana State Analytical and Fusion Exchange |
| LBA | Ladakh Buddhist Association (India) |
| LAHDC | Ladakh Autonomous Hill Development Council (IJK) |
| LCA | Louisiana Chemical Association |
| LCIA | Louisiana Chemical Industry Alliance |
| LD | Lunar Distance |
| LeJ or LEJ | Lashkar e Jhangvi (Kashmir) |
| LeT or LET | Lashkar-e-Taiba (also Lashkar-e-Toiba and other variations) (Kashmir) |
| LF | Low Frequency |
| LHC (1) | Lahore High Court (Pakistan) |
| LHC (2) | Large Hadron Collider (CERN) |
| LINEAR | Lincoln Near-Earth Asteroid Research (MIT) |
| LLW | Low-Level Radioactive Waste |
| LMA | Louisiana Maritime Association |
| LNG | Liquefied Natural Gas |
| LOC | Line of Control (Kashmir) |
| LRA | Lord's Resistance Army (DRC) |
| LT | See LeT. |
| LTTE | Liberation Tigers of Tamil Eelam |
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|---|---|
| M-19 | April 19 Movement |
| MA | Massachusetts |
| MAD | Mutually Assured Destruction |
| MAK | Maktab al-Khidamat |
| MARSEC | Maritime Security |
| MARSOC | US Marine Corps Forces Special Operations Command |
| MASINT | Measures and Signatures Intelligence |
| MAT | Mitigation Assessment Team (FEMA) |
| MC | Muslim Conference (Kashmir) |
| MCI | Multiple Casualty Incident |
| MD | Maryland |
| MDA | Maritime Domain Awareness (CBP) |
| MDI | Markaz Dawa wal Irshad (also Markaz-ud-Dawa-wal-Irshad and other variations) (Kashmir) |
| MDT | Mountain Daylight Time (GMT/UTC-6) |
| ME | Maine |
| MI | Michigan |
| MI-5 | Security Service (Military Intelligence, Section 5) (UK) |
| MI-6 | Secret Intelligence Service (Military Intelligence, Section 6) (UK) |
| MI-9 | Escape and Evasion [1939-1945] (Military Intelligence, Section 9) (UK) |
| MISG | Military Information Support Group |
| MISG (A) | Military Information Support Group (Airborne) |
| MISO | Military Information Support Operations |
| MLA | Member of the Legislative Assembly (IJK) |
| MLC | Movement for the Liberation of Congo |
| MMA | Mutahida Majlise Amal |
| MMRS | Metropolitan Medical Response System (US) |
| MMWR | Morbidity and Mortality Weekly Report (CDC) |
| MN | Minnesota |
| MO | Missouri |
| MONUC | UN Organization Mission in the Democratic Republic of the Congo |
| MONUSCO | UN Organization Stabilization Mission in the Democratic Republic of the Congo |
| MOU | Memorandum of Understanding |
| MPC | Minor Planet Center (IAU) |
| MQM | Muttahida Quami Movement (Pakistan) |
| MRTA | Túpac Amaru Revolutionary Movement |
| MS | Mississippi |
| MST | Mountain Standard Time (GMT/UTC-7) |
| MT | Montana |
| MTU | Michigan Technological University |
| MUF (1) | Material Unaccounted For |
| MUF (2) | Muslim United Front (Kashmir) |
| MW | Megawatts |
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| N | |
|---|---|
| NAB | National Accountability Bureau (Pakistan) |
| NAF | Numbered Air Force (of the USAF Air Combat Command) |
| NAFTA | North American Free Trade Agreement |
| NAM | National Association of Manufacturers |
| NARM | Nuclear Accelerator-Produced Radioactive Materials |
| NAS | National Academy of Science |
| NASAHO | National Association of State Animal Health Officials |
| NASDA | National Association of State Departments of Agriculture |
| NatGeo | National Geographic |
| NATO | North Atlantic Treaty Organization |
| NBACC | US National Biodefense Analysis and Countermeasures Center |
| NC (1) | National Conference (J&K) |
| NC (2) | North Carolina |
| NCBFAA | National Customs Brokers and Forwarders Association of America |
| NCC | National Coordinating Center |
| NCDMPH | National Center for Disaster Medicine and Public Health (USU) |
| NCEP | National Centers for Environmental Prediction (NWS) |
| NCEZID | National Center for Emerging and Zoonotic Infectious Diseases (CDC) |
| NCFPD | National Center for Food Protection and Defense (US) |
| NCI | Nuclear Control Institute |
| NCIS | Naval Criminal Investigative Service |
| NCPIP | National Continuity Policy Implementation Plan (US) |
| NCRP | National Council on Radiation Protection and Measurements (US) |
| NCS | National Communications System |
| NCTC | US National Counterterrorism Center |
| ND | North Dakota |
| NDAA | National Defense Authorization Act of 2012 (US) |
| NDMS | National Disaster Medical System (US) |
| NDU | National Defense University (Pakistan) |
| NE (1) | Nebraska |
| NE (2) | Northeast |
| NEA | National Energy Act of 1978 (US) |
| NEC | National Electrical Code (US) |
| NEF | National Essential Function |
| NEHRA | National Earthquake Hazards Reduction Act of 1977 (US) |
| NEHRP | National Earthquake Hazards Reduction Program (FEMA) |
| NEI | Nuclear Energy Institute |
| NEMA (1) | National Electrical Manufacturers Association |
| NEMA (2) | National Emergency Management Association |
| NEO | Near Earth Object |
| NEOWISE | Near Earth Object Wide-field Infrared Survey Explorer (NASA) |
| NEPA | National Environmental Policy Act of 1969 (US) |
| NEPEC | National Earthquake Prediction and Evaluation Council (US) |
| NERC | North American Electricity Reliability Corporation |
| NESEC | Northeast States Emergency Consortium (US) |
| NESHAPs | National Emission Standards for Hazardous Air Pollutants (US) |
| NEST | Nuclear Emergency Support Team (US) |
| NETAP | National Earthquake Technical Assistance Program |
| NFA (1) | National Fire Academy |
| NFA (2) | National Firearms Act of 1934/1968 |
| NFDS | National Fire Data System |
| NFIP | National Flood Insurance Program (FEMA) |
| NFPA | National Fire Protection Association |
| NGBS | National Green Building Standard |
| NGO | Nongovernmental Organization |
| NH | New Hampshire |
| NHC | US National Hurricane Center |
| NHPA | National Historic Preservation Act of 1966, as Amended 2000 (US) |
| NIC | National Integration Center |
| NIH | US National Institutes of Health (DHHS) |
| NIJ | National Institute of Justice |
| NIMS | National Incident Management System (US) |
| NIPP | National Infrastructure Protection Plan (US) |
| NIST | National Institute of Standards and Technology (US) |
| NJ | New Jersey |
| NLD | National Levee Database (USACE) |
| NLM | US National Library of Medicine (NIH) |
| NLT | Not Later Than |
| NM | New Mexico |
| NMFS | National Marine Fisheries Service (NOAA) |
| NMSZ | New Madrid Seismic Zone (US) |
| NNSA | National Nuclear Security Administration (US) |
| NOAA | US National Oceanic and Atmospheric Administration |
| NORM | Naturally Occurring Radioactive Materials |
| NPT | Non-Proliferation Treaty |
| NRC | US Nuclear Regulatory Commission |
| NRDC | Natural Resources Defense Council |
| NREL | National Renewable Energy Laboratory (US) |
| NRF | National Response Framework (US) |
| NRHP | National Register of Historic Places (DOI) |
| NSA | National Security Agency (US) |
| NSDS | National Safety Data Sheet |
| NS/EP | National Security And Emergency Preparedness |
| NSEERS | National Security Entry-Exit Registration System |
| NSM | National Socialist Movement |
| NSMC | North-South Ministerial Council (Ireland) |
| NSPD | National Security Presidential Directive (US) |
| NSSA | National Storm Shelter Association (US) |
| NV | Nevada |
| NVFC | National Volunteer Fire Council |
| NVOAD | National Voluntary Organizations Active in Disasters |
| NW | Northwest |
| NWFP | Northwest Frontier Province (Pakistan) |
| NWO | New World Order |
| NWS | US National Weather Service (NOAA) |
| NY | New York |
| NYT | New York Times |
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| OCA | Observatoire de la Côte d´Azur (France) |
| OH | Ohio |
| OHA | Office of Health Affairs (DHS) |
| OK | Oklahoma |
| OMB | Office of Management and Budget (US) |
| ONEMI | Oficina Nacional de Emergencia del Ministerio del Interior (National Office of Emergency of the Interior Ministry, Chile) |
| ONG | Oil and Natural Gas |
| OPEO | Office of Preparedness and Operations (US DHHS) |
| OR | Oregon |
| ORE | Office of Reports and Estimates (CIA) |
| ORNL | Oak Ridge National Laboratory (US DoE) |
| OSHA | Occupational Safety and Health Administration (US) |
| OSI | Office of Scientific Intelligence (CIA) |
| OSINT | Open Source Intelligence |
| OSIRIS-REx | Origins Spectral Interpretation Resource Identification Security - Regolith Explorer (NASA) |
| OSO | Office of Special Operations (CIA) |
| OSU | Oregon State University |
| OT | Office of International Trade (CBP) |
| OUTCONUS | Outside the Continental United States |
| OWI | Office of Weapons Intelligence (CIA) |
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| PA (1) | Palestinian [National] Authority |
| PA (2) | Pennsylvania |
| PAG | Protective Action Guide (EPA) |
| Pan-STARRS | Panoramic Survey Telescope and Rapid Response System 1 and 2 |
| PBS | Public Broadcasting Service (US) |
| PC (1) | People's Conference (Kashmir) |
| PC (2) | Personal Computer |
| PCI-DSS | Payment Card Industry Data Security Standard |
| PDCO | Planetary Defense Coordination Office (NASA) |
| PDS | Professional Development Series (FEMA) |
| PDP | People's Democratic Party (India) |
| PDT | Pacific Daylight Time (GMT/UTC-7) |
| PETA | People for the Ethical Treatment of Animals |
| PeK | Paasban-e-Kashmir. |
| PF | Plebiscite Front (IJK) |
| PFC | Private First Class |
| PFNI | Police Federation for Northern Ireland |
| PHA | Potentially Hazardous Asteroid |
| PHEP | Public Health Emergency Preparedness |
| PHI | Protected Health Information |
| PHIN | Public Health Information Network |
| PHMSA | Pipeline and Hazardous Materials Safety Administration |
| PIA | Pakistan International Airlines |
| PiAH | Paasban-i-Ahle-Hadith (Kashmir) |
| PII | Personally Identifiable Information |
| PIJ | Palestinean Islamic Jihad |
| PIO | Public Information Officer |
| PIV | Personal Identification Verification |
| PKEMRA | Post-Katrina Emergency Management Reform Act of 2006 (US) |
| PKI | Public Key Infrastructure |
| PLA | People's Liberation Army (China) |
| PLO | Palestine Liberation Organization |
| PMEF | Primary Mission Essential Function |
| PML-N | Pakistan Muslim League - Nawaz |
| POG | Psychological Operations Group |
| POG (A) | Psychological Operations Group (Airborne) |
| POK | Pakistan-Occupied Kashmir |
| POTA | Prevention of Terrorism Act (India) |
| POTUS | President of the United States |
| POW | Prisoner of War |
| PPP | Pakistan Peoples Party |
| PR | Puerto Rico |
| PRISM | Project for the Research of Islamist Movements |
| PSA (1) | Protective Security Advisor (DHS) |
| PSA (2) | Public Safety Act of 1978 (India) |
| PSAP | Public Safety Answering Point |
| PSD | Prevention of Significant Deterioration (EPA) |
| PST | Pacific Standard Time (GMT/UTC-8) |
| PSYOP | Psychological Operations |
| PTWC | Pacific Tsunami Warning Center (NWS) |
| PURPA | Public Utilities Regulatory Policies Act of 1978 (US) |
| PVC | Polyvinylchloride |
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| No entries. |
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| R&D | Research and Development |
| RACES | Radio Amateur Civil Emergency Services |
| RAM | Random Access Memory |
| RAT | Remote Access Trojan |
| RAW | Research and Analysis Wing (India) |
| RCD-Goma | Congolese Democratic Rally |
| RCRA | Resource Conservation and Recovery Act (US) |
| RDD | Radiological Dispersal Device |
| RDX | Research Department Explosive |
| RED | Radiological Exposure Device |
| REMM | Radiation Emergency Medical Management |
| REP | Radiological Emergency Preparedness |
| RI | Rhode Island |
| RILA | Retail Industry Leaders Association |
| RMS | Rights Management Service |
| ROI (1) | Release of Information |
| ROI (2) | Return on Investment |
| ROVER | Rapid Observation of Vulnerability and Estimation of Risk |
| RPM | Revolutions Per Minute |
| RR (1) | Railroad |
| RR (2) | Rashtriya [National] Rifles (India) |
| RSS | National Patriotic Organization aka Sangh (Hindi: Rashtriya Swyansevak Sangh)(India) |
| RTLT | Resource Typing Library Tool (FEMA) |
| RUC | Royal Ulster Constabulary (Northern Ireland) |
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| SA | Situational Awareness |
| SAARC | South Asian Association for Regional Cooperation |
| SAJ | Scholars for Academic Justice |
| SAOP | Senior Agency Official for Privacy (FPC US) |
| SAR (1) | Society for the Anthropology of Religion (AAA) |
| SAR (2) | Search and Rescue |
| SAV | Site Assistance Visit |
| SAVE | Structural Assessment and Visual Evaluation |
| SBA | Small Business Association (US) |
| SC | South Carolina |
| SCADA | Supervisory Control And Data Acquisition |
| SCBA | Self-Contained Breathing Apparatus |
| SCEC | Southern California Earthquake Center (US) |
| SCO | Shanhai Cooperation Organization |
| SCOTUS | Supreme Court of the United States |
| SCUBA | Self-Contained Underwater Breathing Apparatus |
| SD | South Dakota |
| SDWA | Safe Drinking Water Act (US) |
| SE | Southeast |
| SEA or SEATAC | Seattle-Tacoma International Airport |
| SEAL | Sea, Air, Land (US Navy) |
| SEATO | South-East Asian Treaty Organization |
| SECDEF | US Secretary of Defense |
| SeM | Sipha e Mohammad (Pakistan) |
| SEP | Stanford Encyclopedia of Philosophy |
| SETI | Search for Extraterrestrial Intelligence |
| SFHA | Special Flood Hazard Area (NFIP) |
| SFIP | Standard Flood Insurance Policy (NFIP) |
| SHAC USA | Stop Huntingdon Animal Cruelty USA |
| SHARES | Shared Resources [High-Frequency Radio Program] |
| SHIRA | Strategic Homeland Infrastructure Risk Assessment |
| SIECA | Secretariat for Central American Economic Integration (Spanish: Secretaria de Integración Económica Centroamericana) |
| SIGINT | Signals Intelligence |
| SIPRNet | Secure Internet Protocol Router Network (US) |
| SIS | See MI-6. |
| SLS | Space Launch System (NASA) |
| SNU | Significant New Use |
| SNUN | Significant New Use Notice |
| SOAP | Security Outreach and Awareness Program |
| SOC | US Army Special Operations Command |
| SOCINT | Sociocultural Intelligence |
| SOCOM | US Special Operations Command |
| SOF | Special Operations Forces (US) |
| SOG | Special Operations Group (IJK) |
| SOP | Standard Operating Procedure |
| SPC | Storm Prediction Center (NCEP) |
| SPI | Sensitive Personal Information |
| SPLC | Southern Poverty Law Center |
| SPPA | Strategic Partnership Program Agroterrorism Initiative |
| SPRFMO | South Pacific Regional Fisheries Management Organization |
| SQL | Structured Query Language |
| SRAJ | Secret Intelligence and Analysis Wing (LET) |
| SRS | Substance Registry Service (TSCA) |
| SSA | Sector-Specific Agency |
| SSG | Special Services Group (Pakistan) |
| SSN | Social Security Number (US) |
| SSP | Sipha e Sahaba Pakistan (Pakistan) |
| SST | Space Surveillance Telescope (DARPA) |
| STQ | Screening Threshold Quantity |
| SV | Site Visit |
| SW | Southwest |
| SWAT | Special Weapons and Tactics and Tactical Operations |
| SWCC | Special Warfare Combatant-Craft Crewmen (US Navy) |
| SWPC | Space Weather Prediction Center (NCEP) |
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| T/APP | Textile/Apparel Policy and Programs Division (CBP) |
| TACS | Tactical Alternating Current System |
| TCP | Transmission Control Protocol |
| TECHINT | Technical Intelligence |
| TENORM | Technologically Enhanced Naturally Occurring Radioactive Materials |
| TFTP | Terrorist Finance Tracking Program (US) |
| THEPS | Transportable Hybrid Electric Power Station |
| TJP | Tehrik e Jafria Pakistan (Pakistan) |
| TIC | Toxic Industrial Chemicals |
| TIM | Toxic Industrial Materials |
| TN | Tennessee |
| TOR | The Onion Router |
| TOXNET | Toxicology Data Network |
| TRI | Toxics Release Inventory |
| TRIPR | Transportation Rail Incident Preparedness and Response (US PHMSA) |
| TRC (1) | Tourist Reception Centre (Srinagar, India) |
| TRC (2) | Truth and Reconciliation Committee |
| TRC (3) | Tsunami Research Center |
| TRIPS | Trade Related Aspects of Intellectual Property Rights |
| TRQ | Trade-Rate Quota |
| TSA | US Transportation Security Administration |
| TSCA | Toxic Substances Control Act (US) |
| TT&E | Test, Training, and Exercise |
| TTP | Tehrik-e-Taliban Pakistan |
| TTY | Text Telephone/Telephony |
| TV | Television |
| TWIC | Transportation Worker Identification Credential (US) |
| TX | Texas |
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|---|---|
| UAE | United Arab Emirates |
| UASI | Urban Area Security Initiative (US) |
| UHF | Ultra High Frequency |
| UJC | United (Muttahida) Jihad Council |
| UK | United Kingdom |
| UKFTA | US-Korea Free Trade Agreement |
| ULF | Ultra Low Frequency |
| UN | United Nations |
| UNCIP | United Nations Commission for India and Pakistan |
| UNDP | UN Development Program |
| UNHCR | UN High Commissioner for Refugees |
| UNMOGIP | UN Military Observer Group in India and Pakistan |
| UNODA | United Nations Office for Disarmament Affairs |
| UNR | University of Nevada Reno |
| UNRWA | UN Relief and Works Agency for Palestine Refugees in the Near East |
| UPC | Union of the Congolese Patriots |
| UPMC | University of Pittsburgh Medical Center |
| UPS | United Parcel Service |
| US | United States |
| USN&WR | US News and World Report |
| US&R | Urban Search and Rescue |
| USA | United States of America |
| USACE | US Army Corps of Engineers |
| USAID | US Agency for International Development |
| USAMRIID | US Army Medical Research Institute of Infectious Diseases |
| USA PATRIOT | Uniting and Strengthening America by Providing Appropriate Tools Required To Intercept and Obstruct Terrorism Act Of 2001 (US) |
| USBDC | US Bomb Data Center |
| US-CERT | US Computer Emergency Readiness Team |
| USC | University of Southern California |
| USCG | US Coast Guard |
| USDA | US Department of Agriculture |
| USFA | US Fire Administration |
| USGS | US Geological Survey |
| USIP | US Institute of Peace |
| USMC | US Marine Corps |
| USN | US Navy |
| USPS | US Postal Service |
| USSR | Union of Soviet Socialist Republics |
| USTR | US Trade Representative |
| USU | The Uniformed Services University of the Health Sciences (US) |
| UT | Utah |
| UTC | Coordinated Universal Time (See GMT.) |
| UUP | Ulster Unionist Party (Northern Ireland) |
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| VA (1) | Department of Veterans Affairs (US) |
| VA (2) | Virginia |
| VA (3) | Vulnerability Assessment |
| VDC | Village Defense Committee (India) |
| VEI | Volcanic Explosivity Index |
| VERIS | Vocabulary for Event Recording and Incident Sharing |
| VHF | Very High Frequency |
| VHP (1) | Volcano Hazards Program (USGS) |
| VHP (2) | World Hindu Council (Hindi: Vishwa Hindu Parishad) (India) |
| VI | Virgin Islands |
| ViSAT | Vulnerability Identification Self-Assessment Tool |
| VLF | Very Low Frequency |
| VOA | Voice of America (US) |
| VOAD | Voluntary Organization Active in Disaster |
| VR | Virtual Reality |
| VS | Vereinigte Stahlwerke (German: United Steelworks) |
| VSPB | Viral Special Pathogens Branch (NCEZID) |
| VT | Vermont |
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| WA | Washington |
| WARN | Water/Wastewater Agency Response Network |
| WCATWC | West Coast and Alaska Tsunami Warning Center (NWS) |
| WEM | Workshop in Emergency Management |
| WISER | Wireless Information System for Emergency Responders |
| WLA | Water Laboratory Alliance |
| WMD | Weapon(s) of Mass Destruction |
| WORM | Write Once Read Many |
| WP | Washington Post |
| WSI | Water Security Initiative |
| WSJ | Wall Street Journal |
| WSSPC | Western States Seismic Policy Council (US) |
| WTC | World Trade Center |
| WTO | World Trade Organization |
| WV | West Virginia |
| WWW | World Wide Web |
| WY | Wyoming |
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| XML | Extensible Markup Language |
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| ZOG | Zionist Occupied Government |
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