A suicide bomber killed two U.S. service members and two civilian contractors at Bagram Air Base, Afghanistan, Nov. 12. The attack also wounded 16 other service members and a Polish soldier. The Pentagon identified the two service members as Army Sgt. John W. Perry, 30, of Stockton, Calif., and Pfc. Tyler R. Iubelt, 20, of Tamaroa, Ill. They were assigned to the Fort Hood, Texas-based Headquarters and Headquarters Company, 1st Special Troops Battalion, 1st Sustainment Brigade, 1st Cavalry Division.