CONVOY CLEARING U.S. Marines stage their vehicles before beginning a route-clearing mission near Marja in Afghanistan's Helmand province, April 9, 2011. The Marines, assigned to Bravo Company 1st Tank Battalion, have had to go from being proficient with tanks to providing route-clearing support. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 089425-Q-QWL96-360.jpg Photo Gallery