the 57th Operations Group at Nellis. The squadron currently operates the USAF's RQ-170 Sentinel UAVs. It may also be used by the Detachment 3, 53d Test and Evaluation Group for foreign aircraft evaluation testing. F-117A storage In 2008, the surviving fleet of 52 production F-117As were stored, with wings removed, in their original hangars at Tonopah. Since the aircraft still contain classified material, the Air Force was not able to mothball them in the normal facilities and will use hangars at Tonopah instead. One of the mothballed Stealth Fighters is painted in “Gray Dragon” experimental camouflage. The last operational F-117A left Air Force Plant 42 at Palmdale, California, home of the Lockheed Skunk Works for Tonopah on 11 August 2008, marking the disbandment of the 410th Flight Test Squadron, the last operational F-117A squadron. Of these, one was scrapped to test effective methods of disposing of the fleet. However, it appears that in 2010, four F-117A aircraft plus two maintenance spares are reportedly back in use for R&D purposes at Groom Lake, but the rest remain in storage at Tonopah. F-117s were seen flying in the Nevada skies in May 2013. F-117s have been spotted flying near Tonopah as recently as February 2019. In October of 2020, a F-117A was spotted landing at MCAS Miramar in San Diego. Department of Energy The airfield continues to be used by the DOE in support of its mission at the Tonopah Test Range. The DOE facility supports approximately 15 flights per week for its operations. The remaining flights are in support of the USAF and other organizations at the Tonopah Test Range. Based units Flying and notable non-flying units based at Tonopah Test Range Airport. Units marked GSU are Geographically Separate Units, which although based at Tonopah, are subordinate to a parent unit based at another location. United States Air Force Air Combat Command (ACC) Twelfth Air Force 432nd Wing / 432nd Air Expeditionary Wing 732nd Operations Group 30th Reconnaissance Squadron (GSU) – RQ-170A Sentinel See also Tonopah Air Force Station (Evaluation of Soviet "Barlock" Radar) Footnotes References Gordon, Yefim. Mikoyan-Gurevich MiG-19, the Soviet Union's first production supersonic fighter. 2003. Midland Publishing, UK. . Michell III, Marshall L. Clashes; Air Combat Over North Vietnam 1965–1972. 1997, Naval Institute Press. . External links F-117A: The Black Jet Website Declassified Presentations of the tactical and technical exploitation of the MiG-17 and MiG-21 at Tonopah: Have