British Army Col. Sid Lawrence, third from left, chief engineer for Joint Force Support (Afghanistan), talks with Sir Richard Stagg, second from left, British Ambassador to Afghanistan, about retrograde operations from atop the air traffic control tower aboard Camp Bastion, Helmand province, Afghanistan, April 2, 2014. Stagg was meeting with British and Afghan military leaders, and Afghan government officials, in the province. (Official U.S. Marine Corps photo by Lance Cpl. Darien J. Bjorndal, Marine Expeditionary Brigade Afghanistan/ Released)