Authentic war heroes are rare, but their ranks are swollen by impostors. | Earlier this week, J.C. Ortiz of Mission admitted he had fooled hundreds in the Rio Grande Valley into believing he had earned the hero’s image he had so carefully crafted and borrowed from real Vietnam veterans. | Like so many other veteran impostors, he appeared at funerals, spoke at Memorial Day ceremonies and was a regular at local veteran establishments and military hangouts. But in reality, Ortiz, born Gerrald Jerome Bowman, never served in Vietnam or reached the rank of sergeant major. His medals were bought. His...