Crider led his cavalry squadron into the Doura neighborhood in southern Baghdad and lost three soldiers in one week.

NPR: 'Gamble' Author: Iraq War Only Halfway Over

They join Americans in a convoy to a violent area called Doura.

NPR: On Patrol with the Iraqi National Police

Soldiers, who had been told to be on the lookout for such a truck, stopped it when they saw it pull out of a driveway in the Al-Doura neighborhood and begin following them.

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"Doura was a meatgrinder, " recalled Command Sgt.

NPR: 'Gamble' Author: Iraq War Only Halfway Over