Zeta Reticuli

Project Sign

The U.S. Air Force may have planted the seeds of UFO conspiracy theories with Project Sign (established 1947) (which became Project Grudge and Project Blue Book). Edward J. Ruppelt, the first director of Blue Book, characterized the Air Force's public behavior regarding UFOs as "schizophrenic": alternately open and transparent, then secretive and dismissive. Ruppelt also revealed that in mid-1948, Project Sign issued a top secret Estimate of the Situation concluding that the flying saucers were not only real but probably extraterrestrial in origin. According to Ruppelt, the Estimate was ordered destroyed by Air Force Chief of Staff Hoyt Vandenberg.