U.S. Air Force Master Sgt. Mackenzie Mercer, Air Combat Command Communications Support Squadron noncommissioned officer-in-charge, works out at Langley Air Force Base, Va., Jan. 30, 2015. Mercer said he exercises with others in his office to show them he also struggles, which he believes leads to better, more human relationships. (U.S. Air Force photo by Senior Airman Austin Harvill/Released)