U.S. Air Force 1st Lt. Joseph Broeckelmann, an emergency room nurse assigned to the 633rd Medical Operations Squadron, greets his family during a homecoming ceremony at Langley Air Force Base, Hampton, Va., Oct. 20, 2014. The 633rd Medical Group took part in Operation United Assistance. United Assistance 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.