Nigerian Army Col. Ae Abubakar and U.S. Marine Col. David S. Bunn take part in a flight on a U.S. Marine MV-22 Osprey. The U.S. Agency for International Development is the lead U.S. government organization for Operation United Assistance. U.S. Africa Command is supporting the effort by providing command and control, logistics, training and engineering assets to contain the Ebola virus outbreak in West African nations.