Federal Bureau of Investigation
US domestic intelligence and security service
The FBI maintains the longest-running US government UAP filing system. Its master 'flying saucers' file 62-HQ-83894 began in 1947 after the Kenneth Arnold sighting and accumulated thousands of reports through the Cold War. In 2023 the bureau reopened formal FD-302 witness interviews for UAP encounters at restricted facilities.
Key records
- ▸62-HQ-83894 master 'Flying Saucers' file (1947–1980, 10 sections + serials)
- ▸Box 186, 319.1 — 1949 flying-disc compendium
- ▸100-DE-18221 — Detroit field-office UFO reports (e.g. Weaver case 1958)
- ▸Serial-3 / Serial-4 (2023) — modern FD-302 interviews at a restricted facility
- ▸FBI Photos A1–A4 (date / location redacted)