Six teams composed of two first sergeants and two chief master sergeants compete in the Battle of the Chevrons, a team building exercise, at Ellsworth Air Force Base, S.D., May 25, 2016. The Battle of the Chevrons champion belt was awarded to the team with the shortest time for completing 10 obstacles that included a memory test, puzzles, an obstacle course, and trivia questions. (U.S. Air Force photo by Airman 1st Class Sadie Colbert/Released)