190220-N-ZW825-0393 SAO CARLOS, Brazil (Feb. 20, 2019) The Brazilian navy Oswaldo Cruz-class hospital ship NAsH Carlos Chagas (U 19), moored near a medical clinic (far left) in Sao Carlos, Brazil, Feb. 20. The visit marks the fifth stop of a monthlong mission by four U.S. Navy physicians and their Brazilian navy counterparts embarked aboard Chagas to exchange medical expertise and to bring medical care to isolated communities along the Amazon River. (U.S. Navy photo by Mass Communication Specialist 1st Class Byron C. Linder/Released)