U.S. Air Force Master Sgt. Mackenzie Mercer, Air Combat Command Communications Support Squadron noncommissioned officer-in-charge, performs an abdominal exercise at Langley Air Force Base, Va., Jan. 30, 2015. Mercer relieves his stress at the gym by not only working out, but sharing his stressors with close friends who lift with him. (U.S. Air Force photo by Senior Airman Austin Harvill/Released)