Terri Roberts was at the theatre where she worked when the call came. It was her husband, Chuck. Terri should come straight away, he said, to their son Charlie’s house. Terri knew instantly, from the tone of Chuck’s voice, that it was serious. She didn’t ask questions, just ran to her car. And it was on the short drive that she turned on the radio and heard for the first time about a shooting incident that morning at a school in a nearby town.