U.S. Army Sgt. Kyle Cox uses the explosive detection kit to determine if an Iraqi man has touched explosives during a joint foot patrol with Iraqi army soldiers from the 1st Platoon, 1st Company, 1st Battalion, 5th Brigade 6th Division in Baghdad, Iraq, April 10, 2007. Cox is assigned to the 4th Platoon, Alpha Company, 2nd Battalion, 3rd Infantry Regiment, 3rd Stryker Brigade Combat Team, 2nd Infantry Division, Fort Lewis, Wash.