WHS
2d_af_1.pdf
lo UFO FACT SHEET-- The Air Force investigation of UFO's began in 1948 and was known as Project Sign. Later the name was changed ~o Project Grudge, and ·in 1953, it became Project Blue Book. Between 1948 and 1969 we investi- gated 12,618 reported sightings...
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UFO's & UAP's
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UFO's & UAP's
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