Liberia Races To Expand Ebola Treatment Facilities, As U.S. Troops Arrive [Getty Images]

MONROVIA, LIBERIA - OCTOBER 09: U.S. Air Force personnel watch as U.S. Marines arrive on MV-22 Ospreys to take part in Operation United Assistance on October 9, 2014 in Monrovia, Liberia. Some 90 Marines arrived on KC-130 transport planes and the Ospreys to support the American effort to contain the Ebola epidemic. The four Ospreys, which can land vertically like helicopters, will transport U.S. troops and supplies as they build 17 Ebola treatment centers around Liberia. U.S. President Barack Obama has committed up to 4,000 troops in West Africa to combat the disease. (Photo by John Moore/Getty Images)

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