Airman 1st Class Tyler Jones, 28th Maintenance Squadron aircraft metals technician, uses a grinder to shape an aircraft nose bracket from a metal block at Ellsworth Air Force Base, S.D., July 30, 2013. Aircraft metals technicians are trained and certified on several methods to repair and fabricate a variety of parts for Ellsworth’s 28 B-1 bombers. (U.S. Air Force photo by Airman 1st Class Zachary Hada/Released)