Senior Airman Jeffrey Kristek, a 647th Security Forces Squadron Airmen from Joint Base Pearl Harbor-Hickam, Hawaii, climbs a rope on "The Tough One," an obstacle on a course owned by Schofield Barracks, Feb. 1, 2011, in Wahiawa, Hawaii. A total of 16 security forces members are scheduled to attend a two-week Army Air Assault Course beginning May 5, 2011. The February try-outs will help the Air Force security forces NCO in charge of training determine which Airmen he will send to this challenging course. (U.S. Air Force photo/Staff Sgt. Carolyn Viss)
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