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.

As a GCI station, the squadron's role was to guide interceptor aircraft toward unidentified intruders picked up on the unit's radar scopes.

Initially, King Salmon AFS was maintained and operated by Detachment F-3, 531st Aircraft Control and Warning Group (AC&W Gp).

Communications were initially provided by a high frequency radio system which proved unreliable because of atmospheric disturbances.

It was inactivated on 3 August 1979, and replaced by an Alascom owned and operated satellite earth terminal as part of an Air Force plan to divest itself of the obsolete White Alice Communications System and transfer the responsibility to a commercial firm.

On 1 October 1977, AAC, after a trial period, implemented a base support contract with RCA Services as part of an Air Force-wide effort to reduce remote tours.

No longer needed, the 705 ACWS was inactivated on l November 1983 and the station re-designated as a Long Range Radar (LRR) Site.

In 1998 PACAF initiated "Operation Clean Sweep", in which abandoned Cold War stations in Alaska were remediated and the land restored to its previous state.