Sergeant David Fitzsimmons (right), section chief, gun 2, Battery L, 3rd Battalion, 10th Marine Regiment, 2nd Marine Division, monitors his section Marines while they adjust their M777 Howitzer to the parameters displayed on the monitor in Fitzsimmons’ hand. The battery recently took part in an annual training event at an artillery range aboard Marine Corps Base Camp Lejeune, N.C., while they refined their skills with the howitzers.