December 2010: U.S. Capitol Police officer Eddie Thornton had just finished his shift and was in his street clothes on the night of July 16, 2009, when he visited his mother at an apartment. A man started firing a gun nearby. Thornton escorted his mother to her car and told her to leave. Then Thornton saw a man in a police belt and tactical vest. He figured the man was another officer and got in his truck, but then the man opened fire. Thornton got out of the truck and engaged the gunman, who was hit. So was Thornton, but he didn't know it at the time. Soon Prince George's County officers arrived and found the gunman lying on the ground. Thornton was shot in the back. He has recovered and is back on duty.