Maj. Gen. Gary Volesky, right, the Joint Forces Command - United Assistance commander, greets, with an elbow bump, Sgt. 1st Class Roderick Davis, the logistics section noncommissioned officer in charge, 129th Combat Sustainment Support Battalion, 101st Sustainment Brigade, Task Force Lifeliner, during a visit to the Lifeliner’s area of operations in Monrovia, Liberia, Nov. 6, 2014. The elbow bump is being used throughout Liberia to replace the common handshake greeting to help prevent the spread of disease. 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)