United States soldiers take part in an Action Control Class at the Army Center for Enhanced Performance part of the Resiliency Campus on Fort Hood Army post used to help soldiers with their mental and spiritual health in Fort Hood, Texas November 9, 2009. Thirteen people died in the mass shooting Thursday at the sprawling U.S. Army base in Texas. An Army psychiatrist trained to treat war wounded is suspected in the killings. The suspect, Major Nidal Malik Hasan, a Muslim born in the United States of immigrant parents, was shot four times by police.