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usaf_f2.pdf
DOD·ESD_WHS_UFOsandUAPs·pdf·59 KB·1 pages
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• • • ·~~· * ~ • : ~.: ., ... '•'' . , Fact Sheet United States Air Force Secretary 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. includin…
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