Soldiers of Headquarters and Headquarters Company, 36th Engineer Brigade, inspect the water at the Ebola treatment unit before it's handed over to U.S. Agency for International Development, Jan. 2, 2015, Zorzor City, Liberia, in support of Operation United Assistance. Operation United Assistance is a Department of Defense operation in Liberia to provide logistics, training and engineering support to USAID-led efforts to contain the Ebola virus outbreak in western Africa. (U.S. Army photo by Sgt. Ange Desinor, 13th Public Affairs Detachment /RELEASED)