U.S. Marine Corps Staff Sgt. Michael J. Porter, platoon sergeant, Alpha Company, 1st Battalion, 8th Marine Regiment, 2nd Marine Division (MARDIV), supervises his Marines as they perform fire and maneuver drill during a Deployment for Training exercise on Marine Corps Base Quantico, Va., Feb. 18, 2015. The exercise which on stability operations and various training missions. (U.S. Marine Corps photo by Lance Cpl. Kelly L. Street, 2D MARDIV Combat Camera/Released)