US Army Chaplain 1st Lt. Joshua Remy(L) prays alongside fellow parishoners as he attends non-denominational church services at Fort Hood's 1st Air Cavalry Divisional Memorial Chapel, November 8, 2009 in Killeen, Texas. US Army Major Nidal Malik Hasan, 39, a psychiatrist and specialist in combat stress, allegedly killed 13 people in a shooting rampage here is said to have acted alone by investigators and no motive has been established.