 USAISA was the official name of the unit from 1981 to 1989; previously it was known as the Field Operations Group (FOG), created in September 1980.In 1989, the then USAISA commander sent a telex "terminating" the USAISA term and his special access program Grantor Shadow, but the unit continued under a series of different Top Secret codenames which are changed every two years.Known codenames included Capacity Gear, Centra Spike, Torn Victor, Quiet Enable, Cemetery Wind, and Gray Fox.