Col. Prouty was the model for the 'Man X' in Oliver Stone's film 'JFK'.
Col. Fletcher Prouty answered e-mail from this site while he was alive.
His responses and comments are posted here

Col. L. Fletcher Prouty
Jan 24th 1917 - June 5th 2001

Col. Prouty spent 9 of his 23 year military career in the Pentagon (1955-1964): 2 years with the Secretary of Defense, 2 years with the Joint Chiefs of Staff, and 5 years with Headquarters, U.S. Air Force. In 1955 he was appointed the first "Focal Point" officer between the CIA and the Air Force for Clandestine Operations per National Security Council Directive 5412. He was Briefing Officer for the Secretary of Defense (1960-1961), and for the Chairman of the Joint Chiefs of Staff.