Riley Howell, hero: A student killed in the University of North Carolina-Charlotte shooting is being hailed as a hero for leaping in front of the gunman in an attempt to stop him. Riley Howell, 21, was in his liberal studies class at the university Tuesday with about 30 other students when the shooter burst in and opened fire. The brave junior ran at the gunman and knocked him off his feet, allowing fellow students the chance to escape. “He’s an athletically built young man and he took the fight to the assailant,” said Charlotte-Mecklenburg Police Department Chief Kerr Putney. “His...