The 2nd General Support Aviation Battalion, 501st Aviation Regiment, 1st Armored Division Aviation Brigade, from Fort Bliss, Texas, lifts off from Roberts Airfield, Monrovia Province, Liberia, with a package of fuel for an emergency resupply to a mobile medical lab in Greenville, Liberia, Dec. 21, 2014 in support of Operation United Assistance. The Operation United Assistance is a Department of Defense operation in Liberia to provide logistics, training and engineering support to U.S. Agency for International Development-led efforts to contain the Ebola virus outbreak in western Africa. (U.S. Army photo by Sgt. 1st Class Mary Rose Mittlesteadt, 101st Sustainment Brigade Public Affairs/RELEASED)