A U. S. Army soldier mans a .50 caliber machine gun atop a HUMVEE. A U. S. Army soldier mans a .50 caliber machine gun atop a HUMVEE to provide cover fire for fellow soldiers during a search for weapons caches and insurgent forces in a cemetery near An Najaf, Iraq, on Aug. 10, 2004. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 759414-I-WFQ62-069.jpg Photo Gallery