Saint Albans Air Force Station Saint Albans ( also known as Bellevue Hill ) Air Force Station ( ADC ID : P - 14 , NORAD ID : Z - 14 ) is a closed United States Air Force General Surveillance Radar station . It is located south - southeast of Saint Albans , Vermont . It was closed in 1979 . History . Saint Albans Air Force Station ( AFS ) was selected as one of the first of twenty - four Air Defense Command stations of the permanent United States surveillance radar network . On December 2 , 1948 , the Air Force directed the Army Corps of Engineers to proceed with construction of this and the other twenty - three sites . The station was activated on 27 November 1950 at Bellevue Hill , VT . On 1 September 1951 , the 764th Aircraft Control and Warning Squadron began operating a pair of AN / CPS - 6 B radars at and assumed coverage provided by the temporary L - 3 " Lashup " site at Fort Ethan Allen , which had activated in February 1950 . One of these radars remained in service until 1962 . The other was retired from service in 1958 with the arrival of an AN / FPS - 6 , and initially the station 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 . On 1 December 1953 , the station was renamed Saint Albans AFS . A second AN / FPS - 6 unit arrived during 1959 . During 1959 Saint Albans AFS joined the Semi Automatic Ground Environment ( SAGE ) system , initially feeding data to DC - 05 at Topsham AFS , Maine . After joining , the squadron was redesignated as the 764th Radar Squadron ( SAGE ) on 1 October 1959 . 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 August 1962 the station was switched to the SAGE Data Center DC - 02 at Stewart AFB , New York . Beginning in 1962 , this site operated with an AN / FPS - 7 C search radar . An AN / FPS - 26 A arrived in 1963 to replace one of the AN / FPS - 6 height - finder radars . On 31 July 1963 , the site was redesignated as NORAD ID Z - 14 . The other AN / FPS - 6 was retired in 1968 . The AN / FPS - 7C was later upgraded to an AN / FPS - 107 . In addition to the main facility , Saint Albans operated two unmanned AN / FPS - 18 Gap Filler sites : Blue Mountain was closed in December 1967 and Bangor 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 . The facility came under Tactical Air Command jurisdiction in 1979 with the inactivation of Aerospace Defense Command and the activation of ADTAC . The 764th Radar Squadron was inactivated on 29 June 1979 as part of the general closure of aircraft radar surveillance stations , the station was closed on 29 June . With the closure by the USAF , the FAA assumed control of the site , and continue to operate an AN / FPS - 67 B search radar there today ( in the former AN / FPS - 107 radar tower ) . The site is now data - tied into the Joint Surveillance System ( JSS ) . The Blue Mountain Gap Filler site today is obliterated ; the Bangor site support building remains intact .