Major Nidal Malik Hasan, the U.S. Army doctor identified by authorities as the suspect in the shooting at the U.S. Army post in Fort Hood, Texas, is seen in this undated handout photo from a pdf file of the U.S. Government Uniformed Services University of the Health Sciences downloaded on November 5, 2009. The Army psychiatrist opened fire with two handguns at the Fort Hood Army post on Thursday, killing 12 and wounding 31 others, Army officials said, adding the suspect was shot several times but survived. REUTERS/Uniformed Services University of the Health Sciences/Handout (UNITED STATES MILITARY CRIME LAW HEADSHOT CONFLICT IMAGES OF THE DAY) QUALITY FROM SOURCE. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNSAP – He was by turns caring and contentious, a man quick to say “I am blessed” in casual greeting yet one who seemed to stew in discontent that he could not always keep to himself.