Dr. J. Allen Hynek (past Chairman of the Astronomy Department of Northwestern University) served as the scientific consultant to US Air Force's official UFO investigation, initially the secret Project SIGN and later the well-known Project "Blue Book". He did field-investigations and talked to claimed UFO eye-witnesses for 2 decades (between 1948-1969). Starting out as a skeptic, who tried to "explain away" the phenomenon (in an attempt to explain the Michigan 1966 sightings, Hynek came up with the infamous "swamp gas" idea, which became something of a national joke), he later became convinced of the UFO reality and admitted that Project Blue Book had misled the public. His work and findings were used by Director Steven Spielberg for the movie "Close Encounters of the Third Kind."
-Daniel aka Obsidian