American passengers began evacuating a cruise ship quarantined off Japan early on Monday morning, boarding around a dozen buses at a port in Yokohama. An AFP reporter saw buses in a convoy starting to move away from the boat, though they did not immediately depart the port. An American passenger, Sarah Arana, confirmed to AFP she had boarded a bus and was expecting to take one of two charter flights leaving to the United States. qt-sah/rbu