U.S. Air Force Tech. Sgt. Jim Gargano, 509th Maintenance Squadron metals technology assistant section chief, prepares to weld a connector of a B-2 Spirit Bomber tail pipe liner, Mar. 6, 2013, at Whiteman Air Force Base, Mo. Aircraft part production mostly incorporates aspects that will accompany fabrication work, such as precision measurements and jobs like bushing, installation and smaller maintenance on the aircraft. (U.S. Air Force photo/Staff Sgt. Alexandra M. Boutte)