In fall 2009 Jeannine Brown Miller was driving home with her husband after a visit with her mother in Niagara Falls, N.Y. She came upon a police roadblock near the entrance to the Niagara University campus. Ambulance lights flashed up ahead. Miller knew her 17-year-old son, Jonathan, had been out in his car. Even though she couldn’t make out what was happening clearly, something told her she should stop. She asked one of the emergency workers on the scene to check whether the car had the license plate “J Mill.” A few minutes later a policeman and a chaplain approached, and she knew, even before they reached her, what they would say.