Ruppelt, Captain Edward J. (1922–1960)
Captain Edward J. Ruppelt was head of the United States Air Force's investigation into unidentified flying objects from 1951 to 1953. Upon taking charge of Project Blue Book in 1952, he insisted upon the use of the term "unidentified flying object" instead of "flying saucer" and introduced more rigorous procedures for reporting and analyzing information on sightings. His experiences are related in his 1956 book Report on Unidentified Flying Objects.1
1. Ruppelt, Edward. The Report on Unidentified Flying Objects. New York: Doubleday (1956).