Tim Kretschmer
On March 11, 2009, 17-year-old Tim Kretschmer entered his former high school in Winnenden. Germany, at approximately 9:30 a.m. Dressed in black combat gear, Kretschmer began firing, killing nine students and three teachers. He fled to a nearby clinic, where he killed one other person. He then took a hostage and drove to Wendlingen, a