Arnold Engineering Development Complex (AEDC), Arnold Engineering Development Center before July 2012, located at Arnold Air Force Base, Tennessee is a ground-based flight test facility operated by the Air Force Test Center.The AEDC mission is to test and evaluate aircraft, missile and space systems and subsystems at the flight conditions they will experience during a mission; conduct a research and technology program to develop advanced testing techniques and instrumentation and to support the design of new test facilities and maintain and modernize the center’s existing test facilities.