The U.S. in Iraq: One year later

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Staff Sgt. James Bowen, 53, stands watch at a guard post with his "battle buddy" Spc. Carlos Arellano. Bowen served in Vietnam from 1970-71. "Knowing he's been there, I can trust him. I know he's watching my back," said Arellano, 26, who is a rapper in civilian life.

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