305th Fighter Squadron, 21 October 1942 – 13 June 1943 (P-39 Airacobra) 81st Fighter Squadron, 18 June 1943 – 1 February 1944 (P-47 Thunderbolt) Third Air Force 1st Fighter Squadron (Commando), 12–21 June 1944 (P-51 Mustang) 2d Fighter Squadron (Commando), 9–21 June 1944 (P-51 Mustang) 127th Liaison Squadron (Commando), 21 June-17 August 1944 155th Liaison Squadron (Commando), 21 June-17 August 1944 156th Liaison Squadron (Commando), 21 June-17 August 1944 157th Liaison Squadron (Commando), 19 August-6 October 1944 159th Liaison Squadron (Commando), 19 August-6 October 1944 160th Liaison Squadron (Commando), 19 August-6 October 1944 Air Defense Command / Aerospace Defense Command In 1958, the United States Air Force exercised a reversal clause option for a portion of the former Cross City AAF under the post-World War II WAA action that transferred the former military airfield back to the city as a civilian airport. As a USAF installation, the new facility would not have a flying mission, but would be an air defense radar site under the operational control of the Air Defense Command (ADC). The portion of the field used by ADC was renamed Cross City Air Force Station. New military construction (MILCON) ensued, to include concrete structures for barracks, dining facilities, operations, administration, maintenance, and backup electrical power, as well as metal and masonry structures for radar antennas and associated systems. The 691st Aircraft Control and Warning Squadron (691 AC&WS) moved from Dobbins AFB, Georgia to Cross City AFS with an AN/FPS-20A search radar and a pair of AN/FPS-6A height-finder radar sets on 1 July 1958 and the station initially functioned as a Ground-Control Intercept (GCI) and warning station. As a GCI station, the squadron's role was to guide interceptor aircraft toward unidentified intruders picked up on the unit's radar scopes. Alert fighter-interceptor aircraft under Cross City AFS control would typically sortie from Tyndall AFB, Florida or from the Florida Air National Guard's alert facility at Imeson Airport in Jacksonville, Florida. During 1959, Cross City AFS joined the Semi Automatic Ground Environment (SAGE) system, feeding data to Direction Center DC-09 at Gunter AFB, Alabama. After joining, the squadron was re-designated as the 691st Radar Squadron (SAGE) on 1 October 1959. The radar squadron provided information 24/7/365 to the SAGE Direction Center where it was analyzed to determine range, direction altitude speed and whether or not aircraft were friendly or hostile. In 1962, the search radar was upgraded to an AN/FPS-66