Marines with 2nd Battalion, 8th Marine Regiment, 2nd Marine Division fire a FGM-148 Javelin at a firing range aboard Marine Corps Base Camp Lejeune, North Carolina, Jan. 6. The Javelin missile system is most often used by teams of two, a gunner and assistant gunner, although it can be used by one person if necessary. While the gunner aims and fires the missile itself, the assistant gunner remains on the lookout for potential targets and threats, and ensures the back blast area of the missile launcher is clear of obstructions and personnel. (U.S. Marine Corps photo by Lance Cpl. David N. Hersey/Released)