A maintenance crew from Task Force Iron Knights, 2nd Battalion, 501st Aviation Regiment, 1st Combat Aviation Brigade, 1st Armored Division, conducts helicopter maintenance on a UH-60 Black Hawk at James Spriggs Payne Airfield, Monrovia, Liberia, using a spider crane Dec. 13, 2014. It took only two weeks for the Iron Knights to deploy from Fort Bliss, Texas, to Liberia after receiving their orders. 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 Staff Sgt. Terrance D. Rhodes, Joint Forces Command – United Assistance Public Affairs/RELEASED)