[arjie]

Page 60 of Coup d'État by Edward Luttwak describes a large number of US intelligence agencies, the nominal hierarchy, and (I think) the actual hierarchy.

The NGA is in there, interestingly, along with a bunch of others I never thought existed.

[theWatcher37]

Care to list it here?

[notpeter]

It lists 21 distinct agencies:

* Office of the Director of National Intelligence (ODNI)

* Central Intelligence Agency (CIA)

* National Security Agency (NSA)

* Office of Intelligence and Counterintelligence (OICI)

* Border and Customs Service Intelligence Unit [Homeland]

* US Coast Guard Intelligence [Homeland]

* Office of Homeland investigations [Homeland]

* Bureau of Intelligence and Research (INR) [State]

* Office of Terrorism and Financial Intelligence [Treasury]

* Defense Intelligence Agency (DIA) [Defense]

* National Geospatial-Intelligence Agency (NGA)

* National Reconnaissance Office (NRO)

* US Cyber Command

* US Air Force Intelligence, Surveillance and Reconnaissance Agency (ISR)

* National Air and Space Reconnaissance Center (NASIC)

* US Army Intelligence and Security Command (INSCOM)

* National Ground Intelligence Center (NGIC) [Army]

* US Marine Core Intelligence Activity (MCIA)

* US Navy Department's Office of Naval Intelligence (ONI)

* FBI National Security Branch [Justice]

* Office of National Security Intelligence of Drug Enforcement Administration (ONSI DEA) [Justice]

Coup d'État: A Practical Handbook, Revised Edition (2016) by Edward N. Luttwak. Pages 60-62

http://amzn.to/2nlZrDC

The first edition (1968) is timeless, but the revised edition (2016) is amazingly on-point and is updated to reflect the structural changes which have occurred in the half century since it's first printing. It's only 300-odd pages, highly recommended.

[caf]

US Marine Core Intelligence Activity (MCIA)

Is that a... bureaucratic pun?

[QuarterReptile]

A misspelling, as Google will quickly confirm.