U.S. Marines with Special-Purpose Marine Air-Ground Task Force - Crisis Response - Africa fly above Monrovia in an MV-22B Osprey to conduct an aerial reconnaissance of Liberia in support of Operation United Assistance in Monrovia, Oct. 11, 2014. Operation United Assistance is part of a comprehensive U.S. Government effort, led by the U.S. Agency for International Development, to respond to and contain the outbreak of the Ebola virus in West Africa as quickly as possible. (U.S. Marine Corps photo by Lance Cpl. Andre Dakis/SP-MAGTF Crisis Response - Africa Combat Camera/Released)