DECADE, a nuclear weapons effects facility. Among facilities that saw significant modernization were the J-4 Liquid Rocket Engine Test Facility, the Aeropropulsion Test Unit and the Engine Test Facility. PWT also saw a major sustainment and modernization program begin. A number of major aerospace programs came to AEDC for testing, including the F-22 Raptor, the Joint Strike Fighter, the F/A-18E/F Super Hornet, the B-2 Spirit stealth bomber, the Pratt & Whitney 4000 series engines for the Boeing 777 and F-119 engines for the F-22 and Joint Strike Fighter, the Boeing 747 and 767 and the RL-10 rocket engine. The center's workload consolidated to two divisions — test and support — in the mid-1990s, with Sverdrup as test support contractor and ACS as center support contractor. ACS is a joint venture of Computer Sciences Corp., DynCorp and General Physics. In September 2002, a $10.4 million test facility upgrade was announced. When completed, the upgrade would make Arnold Engineering Development Center a "one-stop" shopping center for aerodynamic and propulsion test customers by providing Mach 8 capability. The Mach 8 milestone, which equates to objects traveling about , comes as workers install a new high-temperature and high-pressure burner in the center's Aerodynamic and Propulsion Test Unit. This nearly doubles the center's current test capabilities of Mach 4.1 or nearly . AEDC test experts can run at Mach 8 for three to six minutes, which allows them to test an object across the full-duration mission profile. The project also calls for adding an improved air ejector system to allow the APTU to simulate higher altitude conditions while minimizing air usage. Installing the high-pressure air storage tanks and new liquid oxygen and isobutane systems are also included in the upgrade. Spring 2004 was the targeted completion date. Other information Arnold Air Force Base has its own post office with zip code, 37389. A wetland within Arnold Air Force is the only documented location of Gopher Frog in the state of Tennessee. See also List of United States Air Force installations Tennessee World War II Army Airfields References External links Installations of the United States Air Force in Tennessee Buildings and structures in Coffee County, Tennessee Buildings and structures in Franklin County, Tennessee Airports in Tennessee 1941 establishments in Tennessee