inactivated in 1951, the site was then operated by a detachment of the 143rd Aircraft Control and Warning Squadron, Alaska Air National Guard. As part of HQ Alaskan Air Command's (HQ AAC) plan to upgrade all remote sites to full squadrons, the 744th Aircraft Control and Warning Squadron was activated at Murphy Dome on 1 February 1953 with an authorized strength of 249 personnel. Murphy Dome converted to an air defense Direction Center (later renamed NORAD Control Center) on 4 March 1953, and exercised control over Campion AFS (GCI); Indian Mountain AFS, Tin City AFS and Cape Lisburne AFS (surveillance). Beginning in 1958, the Fort Yukon AFS and Kotzebue AFS Ground Intercept Sites were added when they were activated. As an MCC site, its mission was to feed air defense data to the Alaskan Control Center at Elmendorf AFB where it was analyzed to determine range, direction altitude speed and whether or not aircraft were friendly or hostile. The station also operated a number of radars, including AN/CPS-6B, AN/FPS-8, AN/FPS-20, and AN/FPS-6. Communications were initially provided by a White Alice TD-2 microwave A Route radio link to Clear AFS operated by the Air Force Communications Service (AFCS) . It was inactivated in 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. With the creation of NORAD in 1957, Murphy Dome AFS became one of four NORAD Control Centers in Alaska. The squadron supported, administered and trained assigned personnel to perform air defense missions, support tactical missions as directed by HQ AAC, and operate and maintain the station. The USAF shared its radars with the United States Army Air-Defense Command Post (AADCP) for Nike missile-defense system (Fairbanks Defense Area). The AN/CPS-6B radar was removed in July 1958, the AN/FPS-8 was active until the Nike sites were inactivated in 1971. In 1977, the 744 ACWS was assigned to the newly reactivated 531st Aircraft Control and Warning Group (531 ACWG). The 531 ACWG was later redesignated the 11th Tactical Control Group (11 TCG) in 1981. In the early 1980s, construction began on a new NORAD Region Operations Control Center (ROCC) at Elmendorf AFB, which would be responsible for managing all air defense operations in Alaska, making all manned remote radar sites redundant. The 744th ACWS