MARINE MACHINE GUNNER U.S. Marine Corps Cpl. David Montiel, an infantryman attached to Provincial Rifle Platoon 3, acts as assistant machine gunner for Sgt. Iva Jones just outside Al Asad Air Base, Iraq, Sept. 4, 2008. Montiel, a machine gunner by trade, was helping train non-infantry Marines during a 10-day training cycle for Marines serving on the rifle platoon. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 454673-Z-NOD46-963.jpg Photo Gallery