The United States Intelligence Community (IC) is a group of separate United States government intelligence agencies that work separately and together to conduct intelligence activities to support the security of the United States. The 17 members are Central Intelligence Agency (CIA), National Security Agency (NSA), Defense Intelligence Agency (DIA), Federal Bureau of Investigation (FBI), Defense Intelligence Agency (DIA), Air Force Intelligence, (USAF IR), Army Intelligence, Coast Guard Intelligence, Department of Energy, Department of Homeland Security, Department of State, Department of the Treasury, Drug Enforcement Administration, Marine Corps Intelligence, National Geospatial-Intelligence Agency, National Reconnaissance Office, Navy Intelligence.