Eleventh Air Force
Six months after Eleventh Air Force had been redesignated in Alaska, another headquarters, also named Eleventh Air Force, was established on 13 May 1946 and activated at Olmsted Field, Pennsylvania, on 13 June 1946. This new organization was assigned to Air Defense Command.
Eleventh Air Force
The ARS consists of minimally attended AN/FPS-117 radar sites which were established between 1984 and 1985 at the former manned surveillance and Ground Control Intercept sites of Alaskan Air Command, first activated in the 1950s. Elements of the 1985 North American Air Defense Modernization program followed. Flexible and graduated alert concepts were introduced in the 1990s.