U.S. Air Force 1st Lt. Joseph Broeckelmann, 633rd Medical Operations Squadron emergency room nurse, greets his family during a homecoming ceremony at Langley Air Force Base, Va., Oct. 20, 2014. The 633rd MDG took part in a comprehensive U.S. effort to work with the World Health Organization, and other international partners, to help the governments of Guinea, Liberia and Sierra Leone respond and contain the outbreak of the Ebola virus in West Africa. (U.S. Air Force photo by Senior Airman Aubrey White/Released)