Senior Airman Chris Peterson, 919th Special Operations Aircraft Maintenance Squadron crew chief, tightens bolts on a new propeller mounted on a C-146A Wolfhound, using a torque wrench March 23, at Duke Field, Florida. Peterson is part of a special training program designed to create maintenance specialists to operate interchangeably in deployed locations, keeping crews smaller and saving the Air Force money and manpower. (U.S. Air Force photo by Tech. Sgt. Jonathan McCallum)