Vandenberg Air Force Base present . Today, Vandenberg stands as the third-largest Air Force base after Eglin Air Force Base in Florida, and Edwards Air Force Base in California. On 4 October 1958, Cooke AFB was renamed Vandenberg AFB, in honor of General Vandenberg, the Air Force's second Chief of Staff. The transition from Army camp to missile base solidified on 15 December 1958 when Vandenberg AFB successfully launched its first missile, a PGM-17 Thor IRBM (Intermediate Range Ballistic Missile) The launch from Vandenberg inaugurated the intermediate-range ballistic missile portion of the Pacific Missile Range and was fired by a crew from the 1st
Edwards Air Force Base flights of the North American X-15, the first landings of the Space Shuttle, and the 1986 around-the-world flight of the Rutan Voyager. The 412th Test Wing plans, conducts, analyzes, and reports on all flight and ground testing of aircraft, weapons, software and components as well as modeling and simulation for the U.S. Air Force. The Wing also oversees the base's day-to-day operations and provides support for military, federal civilian, and contract personnel assigned to Edwards AFB. Planes assigned to the 412th carry the tail code: ED. The Engineering Division and the Electronic Warfare Group provide the central components in conducting