Staff Sgt. Andrew Byrnes (L), an infantry squad leader from Aransas Pass, Texas, and Sgt. James Hall (R), an infantry team leader from Orangeville, California, both assigned to Company A, 4th Battalion, 9th Infantry Regiment, carry part of a mortar tube during a combined caches sweep in northwestern Baghdad November 1, 2009. Picture taken November 1, 2009. REUTERS/U.S Army/Sgt. Mark Burrell/Handout (IRAQ MILITARY CONFLICT) FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS