Arlington Heights Air Force Station was activated on 1 April 1960, when Williams Bay AFS was redesignated from P-31 to gap-filler RP-31F. In 1962, the station began providing
Semi-Automatic Ground Environment radar tracks to Data Center DC-02 at
Truax Field, Wisconsin, for the
Chicago Air Defense Sector's
ground-controlled interception. A golf course was built in May 1979 near the nuclear bunker. Many of the Reserve Army Special Forces personnel joined the National Guard's
20th Special Forces Group. But after that date, three military units remained still stationed at the site. ==References==