A rock-and-roll concert for veterans and by veterans

Roger Waters put on an antiwar concert for wounded warriors at a building named for a war.Friday's show at DAR Constitution Hall (the "AR" is for "American Revolution") found Waters, the former bassist and conscience of Pink Floyd, leading a band put together by MusiCorps, a nonprofit organization with a mission to use rock-and-roll to heal the emotional wounds suffered by soldiers returning from Iraq and Afghanistan. The Music Heals benefit show pulled no punches about the physical damage done....