Liberia Races To Expand Ebola Treatment Facilities, As U.S. Troops Arrive

TUBMANBURG, LIBERIA - OCTOBER 11: Liberian Army and U.S. Marine engineers walk next to the construction site of an Ebola treatment center on October 11, 2014 in Tubmanburg, Liberia. The Liberian military and American troops are building an Ebola treatment center there, the first of 17 to be built nationwide, as part of the U.S. response to the epidemic. The World Health Organization says that the Ebola epidemic has killed more than 4,000 people in West Africa. (Photo by John Moore/Getty Images)