 A similar organization, the 4477th Test and Evaluation Squadron ("Red Eagles") performed clandestine flight testing of the aircraft.In October 1992 at the end of the Cold War, the squadrons were inactivated with the 6513th being consolidated with the 413th Test Squadron which was reactivated.The Red Hats, however, possibly continued to conduct FME projects, apparently as an unnumbered squadron at an undisclosed location in Nevada.