Perrin Air Force Station was established in 1962 as an annex of Duncanville AFS, TX with an AN/FPS-20 search radar and an AN/FPS-6 height-finder radar, and initially the station functioned as a Ground-Control Intercept (GCI) and warning station. As a GCI station, the squadron's role was to guide interceptor aircraft toward unidentified intruders picked up on the unit's radar scopes. At the end of 1963 the site was performing duty as a joint-use facility for the Federal Aviation Administration and Air Defense Command.