Donald E. Keyhoe

Donald E. Keyhoe was a retired US Marine Corps Major and a prominent early UFO researcher. He authored several highly influential books, including 'The Flying Saucers Are Real', and served as the director of the National Investigations Committee on Aerial Phenomena (NICAP).

One of the most important early civilian UFO advocates, who relentlessly pushed for congressional hearings and an end to USAF secrecy.