was re-designated as a Fighter-Interceptor squadron, with the Air Defense Command (ADC) becoming the gaining organization. Its new mission was the air defense of Nebraska and specifically the air defense of the new SAC facility, which was programmed to receive the Air Forces new B-47 Stratojet intercontinental jet bomber in 1954. In 1955 the 173d was authorized new facilities. A new site was located south of the commercial air terminal adjoining the Air Force base and the unit moved to its new facilities in the fall of 1956. Two years later, the unit moved into a vacated Naval Air Reserve hangar and turned its "old" hangar over to the Nebraska Army National Guard. Since that time, additional facilities were built on the 166 acres (0.67 km2) of the Lincoln Air National Guard Base. Army aviation and other Army units remain tenants today. The 173d transitioned to North American F-86D Sabre interceptors in 1957, and upgraded to the modified F-86L in 1959 which could be computer controlled by the ground-based SAGE guidance system to intercept target unknown aircraft. In 1960, ADC decided to expand the organization to a group level, activating the 155th Fighter-Interceptor Group at Lincoln AFB on 1 July; with jurisdiction of the 173d being transferred from the Iowa ANG 132d Fighter Group to the new 155th FIG. The unit remained under ADC until 1964 with the planned retirement of the B-47. The unit then received Republic RF-84F Thunderflash photo-reconnaissance aircraft and became a Tactical Air Command reconnaissance squadron. In January 1965 SAC's 307th Bomb Wing began phasing down at Lincoln AFB and the base was closed on 6 June 1966; returning it to its original role of a municipal airport with a collocated Air National Guard Base. The 173d continued to operate as a tactical reconnaissance squadron until 1993, being upgraded to the RF-4C Phantom II in 1972. With the retirement of the Phantom in the early 1990s and the end of the Cold War, the unit was re-aligned into the 173d Air Refueling Squadron, flying Boeing KC-135R Stratotankers and being activated to federal service under the Air Mobility Command. Lineage Constituted 401st Fighter Squadron on 22 July 1943 Activated on 25 July 1943 Inactivated on 10 November 1945 Re-designated 173d Fighter Squadron and allocated to the Nebraska Air National Guard on 24 May 1946. 173rd Fighter Squadron (Single-Engine) extended federal recognition on 26 July 1946 Re-designated: 173d