This was the first F-4C to be built for the Air Force. All older F4's were actually converted Navy F-4B's. I was an F-4 Weapon Control Systems Technician for 17 years in the Air Force and this was one of the aircraft that I maintained while I was assigned to the Armament Development and Test Center at Eglin AFB, FL in 1968 and 1969. 08/29/2008 @ 21:44 [ref: 22580]