After a 21-day controlled monitoring period, a group of 14 U.S. Service members departed the Langley Transit Center at Langley Air Force Base, Va., April 1, 2015. The group included U.S. Air Force Airmen and U.S. Army Soldiers who deployed to West Africa in support of Operation United Assistance, which aimed to combat the spread of the Ebola Virus Disease throughout the region. (U.S. Air Force Photo by Staff Sgt. Ciara Gosier/Released)