June 2010: Trooper Kevin Caldwell of the Michigan State Police was off duty driving behind an Allen Park Police Officer in a residential area when he heard shotgun fire. The Allen Park officer responded and so did Caldwell. Arriving on scene, they discovered that the shots targeted a civilian court officer. The gunman quickly turned his attention on the Allen Park police officer, hitting him with aimed fire. Caldwell pulled his wounded fellow officer to safety behind a cement wall and engaged the gunman. From this position, Caldwell and other officers fought it out with the gunman for nearly three hours. The gunman was found dead after the battle. The wounded officer recovered.