ROBERTS INTERNATIONAL AIRPORT, Republic of Liberia - U.S. Air Force Staff Sgt. Daniel Gonzalez, an aerial porter with the Joint Task Force-Port Opening team of the 621st Contingency Response Wing stationed at Joint Base McGuire-Dix-Lakehurst, N.J., briefs members of the U.S. Public Health Service after arriving here, during Operation UNITED ASSISTANCE, October 27, 2014. The medical staff of the USPHS will aid Ebola patient medical staff who need medical care. OUA is a U.S. Africa Command-led operation to provide command and control, logistics, training and engineering support to the U.S. government’s efforts to contain the Ebola virus outbreak in West African nations. (U.S. Air Force photo/Staff Sgt. Gustavo Gonzalez/RELEASED)