Petty Officer 2nd Class Ryan Rivera, a machinery technician from Coast Guard Cutter Wahoo, is congratulated from a member of the Army as he crosses the finish line of the Mangudai three-day challenge at Joint Base Lewis-McChord, Wash., May 3, 2013. Mangudai warriors marched to each event, including obstacle courses, land navigation, multiple range events, and various medical treatments and techniques. (U.S. Coast Guard photo by Seaman Crystal Saladino)