Mass shooting at Fort Hood

A SWAT team enters the main gate at Fort Hood, Texas, Thursday, Nov. 5, 2009. A military psychiatrist facing deployment overseas allegedly opened fire at a U.S. Army base, killing 13 people, before being shot by a first responder, in what appears to be the worst mass shooting at a U.S. military base. The shooting suspect was identified as Army Maj. Nidal Malik Hasan.

Credit: AP Photo/Waco Tribune Herald