A U.S. Public Health Service officer helps put the final touches on the administrative area of the Monrovia Medical Unit Nov. 4, 2014, located 30 miles outside of Monrovia, Liberia. The MMU is divided into two zones: the low-risk zone, where the administrative and staff areas are, and the high-risk zone, where patients are cared for. (U.S. Army photo by Sgt. 1st Class Nathan Hoskins, Joint Forces Command – United Assistance Public Affairs/RELEASED)