Focused and disciplined, Marines still heard the cheers. Staff Sgt. Thomas Powell knew what he was in for as he arrived in Oceanside at 8 a.m. "I was in the Boy Scouts in Fresno and we did a parade," he said. "It's not really something I had planned on again." Powell would still be in a uniform, but this parade would be decidedly different for the 37-year-old Marine, who on May 30 returned to his home in Vista after spending seven months in Kuwait and Iraq. It would leave him ---- after the mile-long march through tens of thousands of...