 On 10 November 1988, the Air Force officially announced the existence of the Lockheed F-117A Nighthawk to the public.With this announcement, the formerly clandestine Tactical Air Command 4450th Tactical Group, which had transitioned the F-117 from a development to operational weapons system was put on the road to inactivation when the Air Force decided to increase the 4450th TG to a Wing level organization.As part of the phasedown of operations at George, the 37th Tactical Fighter Wing moved without equipment or personnel to Tonopah Test Range Airport, Nevada on 5 October 1989, and assumed the aircraft, personnel, equipment and mission of the provisional 4450th Tactical Group .