U.S. Army Sgt. Tyler Barriere (left) of the 2nd Special Troops Battalion, 2nd Brigade Combat Team, 4th Infantry Division shakes hands with Sgt. Troy Stiner to demonstrate that Ruby, a military working dog assigned to Stiner, will not attack an innocent bystander during a demonstration at the Diwaniyah Police Academy in Diwaniyah, Iraq, on Feb. 9, 2009. The soldiers also conducted an assessment of the academy to ensure they are getting the supplies they need.