Before becoming the 701st ADS , the unit was known as the 701st Aircraft Control and Warning Squadron and the 701st Radar Squadron . For most of its existence , the unit was located at Fort Fisher Air Force Station near Kure Beach , North Carolina . With the closure of Fort Fisher AFS in the late 1980s , the 701st was moved to Langley Air Force Base , Virginia and collocated with First Air Force headquarters . During this time the unit also became the 701st Air Defense Squadron . In 1991 , both First Air Force and the 701st relocated to Tyndall AFB . Between 1995 and 1997 , both organizations transitioned from the US Air Force to the Air National Guard . As part of the transition , active duty 701st military personnel were replaced with members of the Florida Air National Guard . After the September 11 attacks , the role of homeland defense was greatly expanded necessitating a restructuring of First Air Force units . Part of this expansion was the inactivation of the 701st and its replacement by the 601st Air Operations Group
September 11 attacks
September 11 attacks
701st Air Defense Squadron