Service members unload a U.S. Army UH-60 Black Hawk from a U.S. Air Force C-17 Globemaster III Oct. 30, 2014, during Operation United Assistance. The U.S. Africa Command-led operation provides command and control, logistics, training and engineering support to the U.S. government’s efforts to contain the Ebola virus outbreak in West African nations. (U.S. Air Force photo/Staff Sgt. Gustavo Gonzalez)