GovernmentWright-Patterson AFB, OH

Blue Book shuts down

Official portrait of Robert C. Seamans Jr. in suit and tie
Air Force Secretary Robert Seamans Jr., who announced the end of Project Blue Book United States Air Force Archive, CC BY-SA 4.0, via Wikimedia Commons

Air Force Secretary Robert Seamans Jr. announced the end of Project Blue Book, citing the Condon study and its review by the National Academy of Sciences. The Air Force said no case it had studied showed a threat to national security or evidence of extraterrestrial vehicles.

Evidence
Significance

Sources

  1. OfficialProject Blue Book 50th AnniversaryU.S. National Archives / 2019-12-05
  2. OfficialUnidentified Flying Objects and Air Force Project Blue Book (fact sheet)U.S. Air Force
  3. OfficialUFOs and UAPs research guide (Project Blue Book records)U.S. National Archives

How sources are chosen and tiered