Angolan air force airmen unload chairs from a truck in preparation for African Partnership Flight at Luanda Air Base, Angola, March 22, 2014. More than 20 U.S. Air Force airmen arrived to participate in African Partnership Flight with the Angolan and Zambian air forces, an event which provides a collaborative learning environment for the airmen. (U.S. Air Force photo/Tech. Sgt. Benjamin Wilson)