joining, the squadron was redesignated as the 762d Radar Squadron (SAGE) on 15 December 1958. The radar squadron provided information 24/7 the SAGE Direction Center where it was analyzed to determine range, direction altitude speed and whether or not aircraft were friendly or hostile. In 1960 the 762d started operating an AN/FPS-7 radar. In 1963 the height-finder radars were replaced by AN/FPS-26A and AN/FPS-90 sets. In 1966, after the installation of a Burroughs AN/GSA-51 computer system, North Truro AFS became the first ADC installation configured as a Backup Interceptor Control (BUIC) BUIC II site. BUIC II radar sites were capable of incorporating data feeds from other radar sectors directly onto their radar screens. In 1968, North Truro also became the first radar station to be designated a BUIC III installation. These sites hosted the more capable Burroughs D825 digital computer and could support operations at eleven control consoles. During the early 1970s two BUIC sites were designated to serve as backup to each of the remaining six SAGE centers. The 762nd Radar Sq was inactivated and replaced by the 762d Air Defense Group in March 1970. The upgrade to group status was done because of North Truro AFS' status as a Backup Interceptor Control (BUIC) site. It utilized BUIC III equipment (Burroughs D828 Computer system) for command and control of air defense aircraft in the event that the SAGE Direction Center at Hancock Field, NY was inoperable. The unit commander and in times of Level IV operations, overall air defense commander for the NORAD region, was Col. Alva D. Henehan (1969–71?). The group was inactivated and replaced by the 762nd Radar Squadron again in 1974 as BUIC sites were being removed from service. as defenses against manned bombers were reduced. The group was disbanded in 1984. In addition to the main facility, NTAFS operated three unmanned AN/FPS-14 Gap Filler sites: Westboro, MA (P-10A) Fort Dearborn, NH (P-10B) Chilmark, MA (P-10E) Fort Dearborn was the former Rye AFS, which had closed in 1957. Westboro closed in June 1962, the others in June 1968. Over the years, the equipment at the station was upgraded or modified to improve the efficiency and accuracy of the information gathered by the radars. Routine operations continued and in 1979 the site came under Tactical Air Command jurisdiction as a result of the inactivation of Aerospace Defense Command and the site became part of ADTAC. By 1985