Handout photo showing Hasan, U.S. Army doctor identified by authorities as suspect in shooting at U.S. Army post in Fort Hood, Texas

Major Nidal Malik Hasan, the U.S. Army doctor identified by authorities as the suspect in a mass 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 6, 2009. REUTERS/Uniformed Services University of the Health Sciences/Handout