On November 5, 2009, a mass murder took place at Fort Hood, near Killeen, Texas. Nidal Malik Hasan, a U.S. Army major and psychiatrist, fatally shot 13 people and injured more than 30 others.[2][3]The shooting produced more casualties than any other on an American military base.[4][5] Several individuals, including Senator Joe Lieberman,[6] General Barry McCaffrey,[7] and others have called the event a terrorist attack.[8][9] The United States Department of Defense and federal law enforcement agencies have classified the shootings as an act of workplace violence.[10]