U.S. Marine Cpl. Eric McMullen guides a bulldozer to fill a culvert in the Marjah district of Afghanistan's Helmand province, Nov. 12, 2011. McMullen is a combat engineer assigned to Alpha Company, Combat Logistics Battalion 1. U.S. Marines are repairing the support structure on a bridge connecting Marjah and Nawa districts. The bridge receives heavy foot and vehicle traffic due to the local bazaar, as well as Afghan and coalition military convoys.