Foia Release Unclassified Complete

40027753-001-0035

National Archives and Records Administration

Released
Published
Added to archive
Jun 16, 2026
Department
National Archives and Records Administration
Original size
19.5 MB
External ID
7409aedc2b22d8e4ec53d2b8d93cefaf29274f3d297cca869b21d419799ed623
Confidence
85%
Credibility
90%

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Intelligence summary

This document details the termination of Project Blue Book, the U.S. Air Force's investigation into UFOs, which concluded in December 1969. It summarizes the findings of the project, stating that no UFOs posed a threat to national security, and that there was no evidence of extraterrestrial vehicles or advanced technology beyond current scientific understanding.

Tags & topics

Air Force InvestigationsNational SecurityProject Blue BookUFOs Air ForceProject Blue BookPublic RecordsTerminationUFO

Locations referenced

LocationContextConfidenceSupporting text
Wright-Patterson Air Force Base, Ohio Incident Location Medium Public Affairs Division, Wright-Patterson AFB, Ohio 45433 (AC513) 257-4248 UFOs & PROJECT BLUE BOOK On December 17, 1969, the Secretary of the Air Force announc
Wright-Patterson Air Force Base, Ohio Incident Location Medium Public Affairs Division, Wright-Patterson AFB, Ohio 45433 (AC513) 257-4248 UFOs & PROJECT BLUE BOOK On December 17, 1969, the Secretary of the Air Force announc
N.W., Washington Archive Location Unresolved …investigating and analyzing UFOs was rescinded. Documentation regarding the former Blue Book investigation has been permanently transferred to the Modern Milit

Extracted timeline

Jun 15, 1969

Document Date (year hint)

Document Date (year hint) for 40027753-001-0035

Jun 16, 2026

Ingestion Date

Ingestion Date for 40027753-001-0035

Jun 16, 2026

Document Record Date

Document Record Date for 40027753-001-0035

Jun 16, 2026

Update Date

Update Date for 40027753-001-0035

Entities mentioned

Full document text

2,484 characters, transcribed via OCR. Errors reflect the source scan. Compare with the original ↗

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Public Affairs Division, Wright-Patterson AFB, Ohio 45433 (AC513) 257-4248 UFOs & PROJECT BLUE BOOK On December 17, 1969, the Secretary of the Air Force announced the ter- mination of Project Blue Book.,..! the-Air» HORGSn DOLE am for the investigation of UFOs e Be ae ieee _v ee cn i At oneal oe Sa Wiig ay toe re ap eas ie SOL A CG From 1947 to 1969, a total of 12,618 sightings were reported to Erojece | . Blue Book. Of these, 701 remained “unidentified.” >, ai: BS adsl CS aes ei 7 MR ONES See AR ROM LLANE REE RTE ES AONE I ee een The project” was headquartéred’ at “Wright-Patterson Air Force Bice a hoee personnel no longer receive, document or investigate UFO reports. The decision to discontinue UFO investigations was based on an evaluation of a report prepared by the University of Colorado entitled, "Scientific Study of Unidentified Flying Objects"; a review of the University of Colora- do's report by the National Academy of Sciences; past UFO studies and Air Force experience investigating UFO reports during the '40s, '50s, and '60s. As a result of these investigations and studies and experience gained from investigating UFO reports since 1948, the conclusions of Project Blue Book are: (1) no UFO reported, investigated, and evaluated by the Air Force has ever given any indication of threat to our national security; (2) there has been no evidence submitted to or discovered by the Air Force that sight- ings categorized as "unidentified" represent technological developments or principles beyond the range of present-day scientific knowledge; and (3) there has been no evidence indicating that sightings categorized as “uniden- tified" are extraterrestrial vehicles. With the termination of Project Blue Book, the Air Force regulation es- tablishing and controlling the program for investigating and analyzing UFOs was rescinded. Documentation regarding the former Blue Book investigation has been permanently transferred to the Modern Military Branch, National Archives and Records Service, Eighth Street and Pennsylvania Avenue, N.W., Washington, D. C. 20408, and is available for public review and analysis. News media inquiries regarding the Blue Book files at the National Archives may be made to the National Archives Public Affairs Office; tele- phone, (202) 523-3089. Other public inquiries about these records may be made to the Modern Military Branch; telephone, (202) 523-3340). (MORE) S3AIHOYY_TYNOILWN 3HL JO SONIGIOH WOYS G3ONGOYNdSY «