For weeks, the fierce duel playing out in the mountains of eastern Afghanistan between U.S. and insurgent artillery crews had been decidedly one-sided deadly only for the Taliban. With better training and high-tech equipment, the Americans were so fast and accurate with return fire that shooting at them from the mountainsides overlooking their camp was practically suicidal. But a seemingly endless supply of insurgents replaced those they killed. The incoming fire continued. Finally a Taliban rocket found its mark.