Everyone loves a good UFO story and, for at least three decades, "everyone" included the U.S. government. From the 1940's through the 1960's, the U.S. Air Force investigated thousands of alleged sightings featuring strange aerial phenomena, and they cataloged their findings. Almost all of the alleged close encounters were debunked and, while a few presented genuine mysteries; Project Blue Book was terminated in 1969 due to its inability to produce anything deemed worthwhile.
