Federal Bureau of Investigation

Agency / Organization· 24 declassified document(s)

Also: F. B. I. · F.B.I. · FBI · Federal Bureau of Investigation · F B I

The Federal Bureau of Investigation is the domestic intelligence and security service of the United States. During the late 1940s and 1950s, the FBI actively investigated early flying saucer reports, often working alongside the Air Force to determine if sightings were of Soviet origin or domestic hoaxes. The FBI's 'Guy Hottel memo' remains one of the most frequently requested documents in the agency's FOIA vault.

Investigated early UFO sightings, hoaxes, and contactees during the Cold War to assess domestic security threats.

Appears in these declassified files

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