Specialist Tyler Jank, left, aircrew with Task Force Iron Knights, gives instructions to Sgt. Kyle Hennick, attached to the 372nd Inland Cargo Transportation Company, during an airlift of electrical supplies to a Ebola treatment unit being built in support of Operation United Assistance at Roberts International Airport, Liberia, Dec. 12, 2014. Task Force Iron Knights is comprised of element of the 2nd Battalion, 501st Aviation Regiment, Combat Aviation Brigade, 1st Armor Division deployed as part of Joint Forces Command – United Assistance. 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)