Powerful machinery
U.S. Air Force Airman 1st Class Tyler Kelly loosens augmentor fuel control bolts on Seymour Johnson Air Force Base, N.C., Jan. 26, 2012. After removing the bolts, Kelly will inspect and clean augmentor build-up from the engine. Kelly is a 4th Component Maintenance Squadron jet engine intermediate mechanic from Columbus, Mo. (U.S. Air Force photo/Senior Airman Whitney Stanfield/Released)