Documents / FOIA release
This is a U.S. Air Force fact sheet (No. 87-34) on unidentified flying objects, issued in October 1987 by the Office of Public Affairs of the Secretary of the Air Force. It traces the Air Force UFO program from Project Sign in 1948 through Grudge to Project Blue Book, which was terminated on December 17, 1969. The sheet states that no UFO threatened national security or showed evidence of advanced technology or extraterrestrial origin. Of 12,618 sightings investigated, 701 remain unexplained.
• • • ·~~·* ~ • : ~.: ., ... '•'' ., Fact Sheet United States Air ForceSecretary of the Air Force, Office of Public Affairs. Washington. D.C. 2033Q-1000 87-34 Unidentified Flying Objects '· History The Air Force began investigating UFOs in 1948 under a program called Project Sign. Later the pr6gram's name . was changed to Project Grudge, and in 1953 it became known as Project Blue Book. On Dec. 17, 1969, the secretary of the Air Force announced the termination of Project Blue Book. The decision m discontinue UFO inYestigations was based on a number of factors. including reports and studies by the University of Colorado and the National Academy of Sciences, as well as past UFO studies and the Air Force's two decades of experience investigating UFO reports. As a result of these investigations, studies, and lrience, the conctusions ~ Project Blue Book were: No UFO reported, investigated and evaluated by the Air Force has ever given any indication of threat to our national security. • There has been no evidence submitted to or discovered by the Air Force that sightings categorized as "unidentified" represent technological developments or principles beyond the range of present-day scientific knowledge. - Local Reproduction Authorized • There has been no evidence indicating that aightings categorized as "unidentified'' are extraterrestrial vehicles. Between 1948 and 1969 the Air Force investigated 12,618 reported UFO sightings. Of these, 11 ,917 were found to have been caused by material objects such as balloons, satellites, and aircraft; immaterial objects such as lightning, reflections, and other natural phenomena: astronomical objects such as stars, planets, the sun, and the moon; weather conditions: and hoaxes. Only 701 reported sightings remain unexplained. More Information Available All documentation regarding the former Blue Book investigation was permanently transferred to the Modem Military Reference Branch, National Archives and Records Administration, 8th and Pennsylvania Ave., Washington, D.C. 20408, and is available for public review. A list of private organizations interested in aerial phenomena can be found in Gale's Encyclopedia of Associations, available in the reference section of most libraries. October 1987
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FOIA release, from the osd collection. The PDF is mirrored here; the original link is above. 1 pages are in the text index: search them above, or from the library's search.