Army Sgt. Chris Branson prepares a M2 .50-caliber heavy machine gun. Army Sgt. Chris Branson prepares a M2 .50-caliber heavy machine gun on top of his Humvee prior to departing for a live fire weapons training exercise for the Iraqi National Guard at Forward Operating Base Duke in Najaf, Iraq, on April 13, 2005. The U.S. Army is currently assisting in establishing Iraq's defensive forces as part of the rebuilding process of Operation Iraqi Freedom. SHARE: Download: Full Size (0.1 MB) Credit: VIRIN: 989587-H-QGM18-691.jpg Photo Gallery