A training center and maintenance building was constructed on the remainder for an Army Reserve Unit of 600 men. At about the same time, the headquarters of 12th Special Forces Group (Army Reserve) was transferred to Arlington Heights.
52 acres (21 ha) was transferred to the city parks district.[5] A golf course was built in May 1979 near the nuclear bunker.[8]
Units of the 12th SFG located at Arlington Heights were disbanded around August 1994.[8] 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.