The moment Joe Childers saw the legs of a US marine officer through the screen panel of the front door he knew his son Shane was dead.With a sense of dread Mr Childers and his wife, Judy, had heard on television that a marine lieutenant had been killed in the first hours of the Iraq war.Then the officer arrived to bring them the news."All I saw was his shoes and about that much red stripe the side of his trousers," said Mr Childers haltingly, his hands six inches apart. "I knew even before they knocked."I knew he was likely to...