ABU DASHIR SECURITY - U.S. Army Staff Sgt. Tahir Hasan pulls security during a visit at a local gas station in Abu Dashir, Iraq, Aug. 19, 2008, to make sure gas prices are not inflated. Combat patrols routinely visit local merchants to ensure fair market prices. Hasan is assigned to the 4th Infantry Division's, 1st Battalion Combat Team.U.S. Navy photo by Petty Officer 2nd Class Kelvin Surgener