Bill Larsen couldn't believe the Vietnam he found the second time he landed in country.Larsen had lived with post-traumatic stress for years, stemming from the hell he encountered during the Vietnam War. When he returned in 1996, it was as if he had never been there before.In 1969, "I was out in the boonies and didn't see any Vietnamese other than enemy soldiers," Larsen said. He saw friends blown up in front of him and earned the Silver Star on a day he was pinned down by snipers."I lifted my head and got shot in the chin and it broke …