FORT POLK, La. (AP) - Men in Arab headdress detonate a homemade bomb along a roadway used by U.S. convoys. A suicide truck bomb rips through a troop encampment, killing dozens. An insult triggers fighting between Iraqi Kurds and Arabs. These events, staged at Fort Polk to replicate the dangers facing U.S. forces in Iraq, made clear to the 4,800 National Guardsmen training at this remote Army base that preparing for a postwar tour of duty is unlike anything they have done before. "We got a very big wake-up jolt" when the training kicked off in mid-January, said Brig. Gen....
