U.S. Army Private 1st Class Karl Koch, 84th Engineer Support Company, lunges for the throat of U.S. Army Staff Sgt. Stewart Tignor, 545 Military Police Company, during a Combatives competition at the Buckner Physical Fitness Center, Tuesday, Aug. 7, 2012. Combatives competitions were held as part of the unit organization festivities for 2d Engineer Brigade Soldiers and their Families called Arctic Trailblazer Week. (U.S. Air Force photo/Justin Connaher)