FORT MYER, Va., June 17, 2007 – Army Pfc. David Clatt's left arm has a curve in it where there shouldn't be one. A military policeman, he was on patrol in Sadr City in East Baghdad when there was an explosion and a piece of shrapnel went right through it. Two months later, Clatt was sitting on the grass in front of the chairman of the Joint Chief of Staff's home here yesterday. Marine Gen. Peter Pace and his wife, Lynne, invited the young soldier and other warriors undergoing treatment at Walter Reed Army Medical Center and Bethesda Naval Hospital...