U.S. Air Force Senior Airman Zack Bertsch, right, Air Combat Command Communication Support Squadron system administrator, and Staff Sgt. Jermale Owens, left, ACC NCO in charge MAJCOM command and control center, pull a canoe loaded with teammates during the Squadron Fitness Challenge at the Langley Air Force Base, Va., May 24, 2012. The challenge consisted of several events including a sled pull, tire flip, and obstacle course. (U.S. Air Force photo by Senior Airman Wesley Farnsworth/Released)