Members of the Joint Forces Command – United Assistance Choir sing during the JFC-UA holiday tree lighting event, Dec. 18, 2014, Barclay Training Center, Monrovia, Liberia. 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 Spc. Rashene Mincy, 55th Signal Company (Combat Camera)/ Released)