PATROL PRESENCE U.S. Marines patrol through Trek Nawa, an area with known insurgent sites, in Afghanistan's Helmand province, Aug. 16, 2012. The Marines are assigned to Weapons Company, 1st Battalion, 1st Marines, Regimental Combat Team 6. SHARE IMAGE: Download Image: Full Size (0.07 MB) Photo By: VIRIN: 228407-U-ZOB96-532.jpg Photo Gallery