U.S. Marine Corps Cpl. Daven Rowell, Arrival and Departure

U.S. Marine Corps Cpl. Daven Rowell, Arrival and Departure Airfield Control Group non-commissioned officer with Combat Logistics Battalion 4, throws a smoke grenade to signal an incoming MV-22B Osprey on Forward Operating Base Jackson, Helmand province, Afghanistan, July 17, 2012. The Osprey was transporting U.S. Marine Corps General James F. Amos, commandant of the Marine Corps and Sgt. Maj. Micheal P. Barrett, sergeant major of the Marine Corps, who were making a command visit to the Marines and Sailors of 1st Battalion, 7th Marine Regiment, Regimental Combat Team 6.