|Acronym used to describe U.S. intelligence agencies|
Since the 1990s, the term alphabet agencies has been commonly used to describe the agencies of the U.S. national security state. Many are members of the United States Intelligence Community, and several were founded or expanded in the aftermath of the September 11 attacks. Alphabet agencies in this sense of the term may also be called three-letter agencies, because they often use three-letter acronyms.
|ATF||1972||Bureau of Alcohol, Tobacco, Firearms and Explosives|
|CIA||1947||Central Intelligence Agency|
|DEA||1973||Drug Enforcement Administration|
|DIA||1961||Defense Intelligence Agency|
|DHS||2002||Department of Homeland Security|
|DOJ||1870||Department of Justice|
|FBI||1908||Federal Bureau of Investigation|
|FEMA||1979||Federal Emergency Management Agency|
|ICE||2003||Immigration and Customs Enforcement|
|NGA||2003||National Geospatial-Intelligence Agency|
|NRO||1961||National Reconnaissance Office|
|NSA||1953||National Security Agency|
|ONI||1882||Office of Naval Intelligence|
|OSI||1949||Office of Scientific Intelligence|
|TSA||2001||Transportation Security Administration|
- Elder, Grant (November 7, 2014). Wiki vs NWO (New World Order): Moving to Collaboration from Domination. FriesenPress. ISBN 9781460248683 – via Google Books.
- Saeger, Michael (1997). Defend Yourself Against Criminal Charges. ISBN 9781570711626 – via books.google.ie.
- Doss, Kevin; Shepherd, Charles (August 17, 2015). Active Shooter: Preparing for and Responding to a Growing Threat. Butterworth-Heinemann. ISBN 9780128027837 – via Google Books.