Gunnery Sgt. Jeremiah Johnson monitors radio transmissions and receives updates from the mobile combat operations center about the progress of the Afghan National Army's clearing operation in Trek Nawa, Afghanistan, Feb. 9, 2013. Johnson is a member of a Camp Pendleton-based Security Forces Assistance Advisor Team, which is mentoring the 1st Brigade, 215 Corps during the two-day operation in southern Helmand Province. U.S. Marine Corps photo by Sgt. Bobby J. Yarbrough.