ARTILLERY SHELL — U.S. Army Sgt. Sean O'Brien carries an old artillery shell found in a field outside the city of Bayji, Iraq, Aug. 16, 2004. O'Brien is assigned to the 1st Infantry Division's Battery A, 1st Battalion, 7th Field Artillery Regiment. Soldiers are helping dispose of dangerous ordnance throughout Iraq. U.S. Army photo by Pfc. Elizabeth Erste