U.S. Air Force Senior Airman Shane McNaughton, 1st Maintenance Squadron munitions technician, and Airman 1st Class Cole Bonack 633rd Aeromedical Squadron, warm up using the high-diamond drill during a Jui-Jitsu class at Langley Air Force Base, Va., May 1, 2012. The Brazilian Jui-Jitsu class is taught by Staff Sgt. Christopher Costa, of the 10th Intelligence Squadron. (U.S. Air Force photo by Staff Sgt. Ashley Hawkins/Released)