the 4th Reconnaissance Squadron. The reconnaissance units were inactivated on 27 June 1949, and the New York Air National Guard's 107th Fighter Group was federalized on 8 December 1948 (initially equipped with TAC P-47 Thunderbolts). 107th personnel deployed in March 1951 to the Far East Air Forces for the Korean War. Air Defense Command (ADC) assumed jurisdiction of the Niagara Falls military installation and the federalized 136th Fighter-Interceptor Squadron. USAF base Niagara Falls Air Force Base (NFAFB) was established by 1955 after the 76th Air Base Squadron was activated in February 1952 as the host unit. Following Korea operations, the 107th converted to F-51 Mustangs and was reassigned to Air Defense Command. The 136th FIS was returned to state control when ADC activated the 47th Fighter-Interceptor Squadron on 1 December 1952 as a replacement. The 47th FIS initially used the F-47s of the 135th Fighter-Interceptor Squadron. NFAFB activated the 518th Air Defense Group on 16 February 1953 (designated 15th Fighter Group on 18 August 1955 under Project Arrow) and upgraded to F-86F Sabres in February 1953 (F-86D in September). In January 1954, the 107th received its first jet aircraft (F-94 Starfire, followed by F-86 Sabres in October 1957 & F-100C Super Sabre in August 1960). The Air Force Reserve's 445th Fighter-Bomber Group with F-84 Thunderjets moved to Niagara Falls from Buffalo Airport on 15 June 1955 and moved to Memphis on 16 November 1957. Two 15th FG aircraft--T-33 & F-86 at Niagara Falls Air Force Base—collided in 1956, the AFB's medical unit treated injuries from a 1958 railcar explosion. In 1959 a NFAFB helicopter crashed in Letchworth State Park searching for an 83-year-old professor emeritus, and in 1961 an F-100 from the base crashed into the Niagara Gorge. SAGE interceptors The 47th FIS aircraft were modified to the F-86L automated data link configuration after the April 1958 Syracuse Air Defense Sector was designated, and a Ground Air Transmit Receive station was built to relay ground-controlled interception commands from the sector's Hancock Field Air Defense Direction Center (DC-03) at Syracuse, New York (operational on December 1, 1958.) The F-86L interceptors were replaced by F-102 Delta Daggers in 1959 (June). NFAFB's 4621st Air Base Group was the host unit and supported the adjacent 1961-9 Niagara Falls Air Force Missile Site with CIM-10 Bomarc surface-to-air missiles. On 1 July 1960 at NFAFB, the 15th Fighter Group was inactivated and the 47th FIS was