Airman 1st Class Christian Peterson, Senior Airman Cameron Smith, and Staff Sgt. Joshua Gott, 28th Munitions Squadron line members, assemble and load guided bomb units during the Global Strike Challenge at Ellsworth Air Force Base, S.D., Oct. 1, 2012. Global Strike Challenge is designed to improve the Air Force’s combat capabilities through competition and recognizing outstanding personnel and teams. (U.S. Air Force photo by Airman 1st Class Zachary Hada/Released)