US Marine Corps (USMC) troops from Charlie Company, 1ST Battalion, 5th Marines, Regimental Combat Team (RCT-5), 1ST Marine Division out of Camp Pendleton, California, on a foot patrol in the city of Baghdad near Saddam Husseins Presidential Palace, aim their Colt 5.56mm M16A2 Assault Rifles into a bunker, as they search for weapons and war materials, during Operation IRAQI FREEDOM