King Salmon Air Force Station (AAC ID: F-03, LRR ID: A-07) is a closed United States Air Force General Surveillance Radar station. It is located west of King Salmon, Alaska. The control center station was closed on 1 November 1983, and was re-designated as a Long Range Radar (LRR) site as part of the Alaska Radar System. Today, it remains active as part of the Alaska NORAD Region under the jurisdiction of the Pacific Air Forces Regional Support Center, Joint Base Elmendorf-Richardson, Alaska. History King Salmon AFS was a continental defense radar station constructed to provide the United States Air Force early warning of an attack by the Soviet Union on Alaska. The Air Force awarded a contract to construct the radar site to Gaasland & Company on 12 April 1950. Construction began shortly afterward and was completed the following year at a cost of approximately $3,667,372. King Salmon became operational as a ground controlled intercept (GCI) site in November 1951 and initially the station functioned as a 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. Radars operated were am AN/FPS-3, AN/FPS-20A, AN/FPS-6, AN/CPS-5 (Bkup), and an AN/FPS-6B. It converted to an Air Defense Direction Center (later renamed NORAD Control Center) on 4 March 1953, and exercised control over Cape Newenham AFS and Cape Romanzof AFS. Control of the other aircraft control and warning sites in the southern sector was transferred to King Salmon when the Fire Island AFS NORAD Control Center was closed in July 1969. Initially, King Salmon AFS was maintained and operated by Detachment F-3, 531st Aircraft Control and Warning Group (AC&W Gp). In 1952, Alaskan Air Command (ACC) decided to upgrade all the aircraft control and warning detachments to squadrons. The 705th Aircraft Control and Warning Squadron was activated on 8 December 1952 and assigned to the 531st AC&W Gp. Following the Group's inactivation on 13 April 1953, the squadron was assigned to various other headquarters, including AAC. On 15 November 1977, the squadron was reassigned to the 531st AC&W Gp when the latter was reactivated at Elmendorf AFB. The Group was redesignated the 11th Tactical Control Group on 1 July 1981. Communications were initially provided by a high frequency radio system which proved unreliable because of atmospheric disturbances. AAC, after investigating various options, decided to build the