Project Blue Book was the U.S. Air Force’s systematic UFO investigation program, running from the early 1950s until 1969. It was headquartered at wright-patterson-afb and concluded that none of its investigated sightings threatened national security or demonstrated technology beyond the era’s known science.
Critics argue the CIA’s 1953 Robertson Panel explicitly directed Blue Book to “debunk” sightings to reduce public interest, undermining its credibility as a neutral inquiry.
Blue Book is the most frequently cited historical reference point for current federal UAP disclosure efforts — tens of thousands of pages of Blue Book records were released via Air Force / National Archives partnerships and are often invoked as a model for what any Trump-era UAP release might look like in practice (src-trump-uap-files-delay-2026-03, src-wright-patterson-general-missing-2026-03).
Modern successors: aaro and prior efforts like kona-blue.