as the battle rages, the soldiers find two more americans severely wounded. they load the men on stretchers and carry them off the roof. with so many men hurt, loftis moves in, he takes up a machine gun and lays down suppressive fire. after 30 minutes, the fighting stops. a medevac helicopter ferries away the wounded. the americans have won the day. but why? for nearly a decade, there have been fighting like this one in fallujah and sadr city. countless other towns the soldiers have never heard of before they deployed. but they know them now. and the battles stay with the troops. coming up -- >> if you asked me now to sign a dotted line and get everyone out of afghanistan, i wouldn't hesitate. it's not worth getting a soldier