This image made from AP video shows Afghan National Army soldiers rushing to the scene moments after a car bomb exploded in front the PRT, Provincial Reconstruction Team, in Qalat, Zabul province, southern Afghanistan, Saturday, April 6, 2013. Three U.S. soldiers, two U.S. civilians and a doctor were killed when a suicide bomber detonated a car full of explosives just as a convoy with the international military coalition drove past another convoy of vehicles carrying the governor of Zabul province.