FIRING LINE U.S. Marines verify the sights on their rifles on Camp Leatherneck in Helmand province, Afghanistan, Sept. 5, 2011. The Marines are assigned to the 1st Battalion, 25th Marine Regiment. The battalion is a reserve infantry unit based out of New England and is currently conducting in theater exercises after arriving last week. SHARE IMAGE: Download Image: Full Size (0.07 MB) Photo By: VIRIN: 871453-Q-VUE14-765.jpg Photo Gallery