Philip J. Corso
21 year U.S. Army vet and former Chief of the Pentagon's Foreign Technology desk wrote a book about an alleged government cover up at Roswell in 1947.
Philip J. Corso served in the U.S. Army for 21 years and retired with the rank of Lieutenant Colonel. During the Korean War he was assigned to General MacArthur's Intelligence Division as Chief of Special Projects. He continued to work in Army intelligence and held various positions in the Pentagon, including fours years on President Eisenhower's National Security Council, before retiring from the U.S. Army in 1963. After his military career he became an author and claimed to have assisted in the retrieval of extraterrestrial technology at the Roswell crash site in 1947. In his book with co-author Bill Birnes, "The Day After Roswell," Corso asserted that he was tasked with reverse-engineering the recovered alien technology and distributing it to various defense contractors. While his claims have been met with skepticism, Corso remains a prominent figure in the UFO community and his book is considered a key text in UFO conspiracy theory.