Master Sgt. Kellie Boisse, 28th Logistics Readiness Squadron first sergeant, slides down a party inflatable obstacle during the Battle of the Chevrons at Ellsworth Air Force Base, S.D., May 25, 2016. Six teams, comprised of two first sergeants and two chief master sergeants, competed in team building exercises racing other teams for the fastest time to complete 10 obstacles. (U.S. Air Force photo by Airman 1st Class Sadie Colbert/Released)