U.S. Air Force Senior Airman Trent O’Shell, 20th Civil Engineer Squadron firefighter, attempts an obstacle during an Alpha Warrior Air Force Tour competition at Shaw Air Force Base, S.C., Aug. 2, 2017. The five-minute course gave units the opportunity to compete against other units for the title of Team Shaw’s Alpha Warriors. (U.S. Air Force photo by Senior Airman Christopher Maldonado)