U.S. Army Spc. Alex Muenz, an engineer from 336th Engineer Company, properly uses his Army Combat Uniform trousers as a flotation device during drown proof training on Fort Hunter Liggett, Calif., Aug. 6, 2011. The technique allows the Soldier to conserve energy in the water by keeping them afloat and not forcing the Soldier to tread water. The Soldiers participated in their annual training in support of Castle Installation Related Construction on Fort Hunter Liggett.