A federation of executive branch agencies and organizations that work separately and together to conduct intelligence activities necessary for the conduct of foreign relations and the protection of the national security of the United States. The US Intelligence Community functions as a single corporate enterprise, supporting those who manage the nation's strategic interests - political, economic, and military. The US Intelligence Community is comprised of the following sixteen (16) entities: (1) Central Intelligence Agency (2) Federal Bureau of Investigation (3) National Security Agency (4) National Reconnaissance Office (5) National Geospatial Intelligence Agency (6) Department of State (7) Department of Homeland Security (8) Department of Energy (9) Defense Intelligence Agency (10) Army (11) Air Force (12) Navy (13) Marines (14) Coast Guard (15) Department of Treasury (16) Drug Enforcement Administration. (FEMA, IIFOG Version 3 Draft, Feb 2008, 41)