Air Force Airmen of the 621st Contingency Response Wing watch a member in a protective suit walk by on the flightline at Roberts International Airport, Republic of Liberia, during Operation United Assitance, Oct. 14, 2014. OUA is a Department of Defense operation in Liberia to provide logistics, training and engineering support to Agency for International Development-led efforts to contain the Ebola virus outbreak in western Africa. Staff Sgt. Gustavo Gonzalez

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Keywords: 621, air, airforce, airmen, contingency, force, military, response, states, united, usa, wing