U.S. Soldiers from special forces take apart their improvised raft after a lengthy river swim at Fort Bragg, N.C., May 8, 2009. The raft contains the rest of the gear they'll need to make it through the rest of the John F. Kennedy Special Warfare Center and the school's Command Sergeant Major's Challenge, a special training event that takes special warfare Soldiers across 10 miles of varying terrain and challenges their bodies, skills, wits and wills.