Keith McVey is no ordinary mailman. He finished his afternoon deliveries, betraying no sign that anything out of the ordinary had occurred save for the blood on his uniform and the cut on his lip. Back at the post office, he was greeted with cries of disbelief: "Did you hear? Keith saved another life today." McVey now can't walk down the street without being honked at by passing cars filled with admirers -- or, apparently, without saving a life. "He's a rock star in our eyes," says Tina Starosto, a receptionist at King Apartments, where a sign declaring "Keith Our...