FBI's 21-Year UAP Case File, Section 10

Brief

The FBI's 62-HQ-83894 case file consolidates investigative records, public reports, and eyewitness testimonies related to UAP activity collected over roughly twenty-one years. Photographic evidence from Oak Ridge, Tennessee — a sensitive Atomic Energy Commission site — is among the most operationally significant items cited. The file also contains technical proposals addressing possible propulsion systems, alongside researcher accounts and convention materials that document the period's civilian and scientific response to the phenomenon. This release represents the complete case file, incorporating newly declassified pages absent from the redacted version previously posted to the FBI Vault.

Metadata

Agency

FBI

Release

5/8/26

Type

PDF • .pdf

Length

184 pages

Classification

UNCLASSIFIED

Tags

flying disc, UAP, Oak Ridge TN, 1947–1968, 62-HQ-83894, photographic evidence, propulsion hypothesis

Key points

• The case file spans June 1947 through July 1968, making it one of the Bureau's longest-running UAP investigative records from the early Cold War era.
• Photographic evidence tied to Oak Ridge, Tennessee was collected — significant given Oak Ridge's status as a classified nuclear research and production facility.
• Technical proposals regarding potential UAP propulsion systems are included, indicating the Bureau received or solicited engineering-level hypotheses about the phenomenon.
• Eyewitness testimonies and public reports constitute a substantial portion of the record, reflecting both civilian and possibly military-adjacent source contributions.
• Convention programs and researcher accounts appear in the file, suggesting FBI monitoring of civilian UAP research organizations during this period.
• Extensive media coverage from 1947–1968 is incorporated, providing contemporaneous public-record context alongside internal investigative material.
• This release carries only minor redactions and includes pages not present in the version previously available on the FBI Vault, representing a materially more complete disclosure.

Most interesting

• Oak Ridge, Tennessee — where photographic evidence was reportedly gathered — was the site of uranium enrichment for the Manhattan Project and remained a top-tier nuclear security priority throughout the file's entire date range.
• The file predates the Air Force's Project Blue Book closure (1969) by one year at its end date, placing it within the peak period of government-acknowledged UAP investigation.
• The presence of technical propulsion proposals in an FBI (law enforcement) file rather than an Air Force or intelligence file suggests the Bureau was functioning as a collection node for unsolicited civilian and scientific correspondence about the phenomenon.
• The gap between the FBI Vault version and this release — described as missing pages and heavier redactions — implies that prior public access to this case was deliberately incomplete for reasons not yet disclosed.