 He attended pilot training in Pensacola, Florida, and was designated a Naval Aviator on November 23, 1971.He was promoted to lieutenant junior grade in December 1971, and was subsequently granted an inter-service transfer to the United States Marine Corps in 1972.Joining Marine Fighter Attack Squadron 212 (VMFA-212) in the spring of 1972, Amos's ensuing operational assignments included tours with VMFA-235, VMFA-232, and VMFA-122, where he flew the F-4 Phantom II.