Technical Sgt. Tim Shiley, 113th Maintenance Squadron engine test facility supervisor, monitors the read out panel inside a sound proof chamber as a restrained, squadron uninstalled F-16 jet engine roars to 85 percent capacity inside the Hush House test facility. The Hush House test facility is primarily used for testing uninstalled engines following maintenance to ensure engines meet all requirements and are safe for flight operations. (U.S. Air Force photo/ Bobby Jones)