afUFOsandUAPsf1.pdf

AFSINC/11 August 1985 LF'O FACT Sl-EET LrPJ/ - '\) 1\ j "/; Wt1L/// 4f v The Air For_ce investigation of UFOs began in 1248 and was known as Project Sign. Later the name was changed to Project Grudge, and in 1953 it became Project Blue Book. Between 1948 and 1969, the Air F-orce investigated 12,618 reported sightings...