UNCLASSIFIED // PUBLIC RELEASERELEASE 04 · JULY 10, 2026

PENTAGON UFO FILE · DOCUMENT · DOW-UAP-D092

Department of the Air Force Committee to Review Project Bluebook, 1966-1967

Department of WarIncident: April 17, 1967Various24 MB

This file covers a turning point in the Air Force’s handling of UFOs. In 1966–67 an ad hoc committee of the USAF Scientific Advisory Board reviewed Project Blue Book, the program that had been logging and explaining sightings since 1952, and recommended handing selected cases to outside scientists.

What the committee recommended

The panel’s central advice was that the Air Force should contract a team of scientists drawn from universities to look closely at a selection of sightings, rather than relying on Blue Book’s small in-house staff alone. The file records the committee’s discussions as well as its recommendation, and notes that the Air Force accepted it.

Where it led

This review is often called the O’Brien Committee, after its chairman, the physicist Brian O’Brien. Its recommendation produced the University of Colorado study led by Edward Condon, whose final report — the Condon Report — concluded that further UFO study was unlikely to advance science. That conclusion, in turn, was the basis on which the Air Force closed Blue Book in 1969. Records like these show an intermediate step on the way to that shutdown: a scientific review that first asked for more study, not less.

The official description

From war.gov/UFO, released July 10, 2026, quoted in full

This file documents the 1966-1967 deliberations and recommendations of the U.S. Air Force (USAF) Scientific Advisory Board’s Ad Hoc Committee to Review Project Blue Book. Project Blue Book was a 1952-1969 USAF program to investigate the nature and origin of unidentified flying objects (UFO). The Committee recommended that the USAF contract a scientific team composed of university-affiliated representatives to investigate selected UFO sightings. The USAF subsequently adopted the Committee’s recommendation.

The summary above is our own; the official description is the government’s, from war.gov/UFO. The Pentagon calls these unresolved cases — publishing a file does not mean it shows anything anomalous.

Last updated October 18, 2026