A technician with the Navy Medical Research Center starts the process to test blood samples collected from the Ebola treatment unit built as a part of Operation United Assistance in Suakoko, Liberia, Nov. 22, 2014. United Assistance is a Department of Defense operation to provide command and control, logistics, training and engineering support to U.S. Agency for International Development-led efforts to contain the Ebola virus outbreak in West African nations. (U.S. Army Photo by Sgt. 1st Class Brien Vorhees, 55th Signal Company (Combat Camera) / Released)