AEDC Test Technology, Analysis and Evaluation Branch validates, advances testing
Stan Freeze, outside machinist, inspects the tail of a F404 engine Jan. 10, 2020, in a sea level test cell at Arnold Air Force Base, Tenn. The engine is being prepared for use as a testbed by the Arnold Engineering Development Complex Technology, Analysis and Evaluation Branch. (U.S. Air Force photo by Jill Pickett)