Team Cohesion Challenge
U.S. Air Force Staff Sgt. Letisha Dagraca, 55th Force Support Squadron fitness supervisor, performs squats while hiking during the Team Cohesion Challenge held on Aug. 22, 2015, at Offutt Air Force Base, Nebraska. The challenge is built around special operations training, and designed to teach leadership, promote unit cohesion and inspire teams to perform their best. (U.S. Air Force photo by D.P. Heard/Released)