U.S. Marine Corps Lance Cpl. Adam Devalk, a Motor Vehicle Operator from Combat Logistics Battalion 7 (CLB 7), Transportation Services Company, 2nd Platoon, coaches a fellow Marine as he fires the M2 Browning .50 caliber machine gun from the turret of a mine-resistant, ambush protected vehicle (MRAP) at Bravo Range aboard Camp Leatherneck, Helmand province, Afghanistan, Feb. 16, 2014. The Marines of CLB 7 qualify with the various weapon systems to perfect their marksmanship skills and proficiency. (Official U.S. Marine Corps photo by Lance Cpl. Darien J. Bjorndal/Released)