U.S. military advance force building facilities to battle disease . One facility speeds up diagnosis . As two Osprey military aircraft appear on the horizon , signalling the opening of an air bridge from Senegal that will put more U.S. troops on the ground in Liberia , Williams ca n't contain his excitement . Another facility will treat stricken healthcare workers in Liberia . A border with Senegal opens to bring in more refugees .
U.S. military advance force building facilities to battle disease . One facility speeds up diagnosis . Another facility will treat stricken healthcare workers in Liberia . A border with Senegal opens to bring in more refugees .