171206-N-QM691-1482 AMAZON RIVER, Brazil (Dec. 6, 2017) Lt. Cmdr. Thomas Barlow, a U.S. Navy doctor, examines a young girl in the remote town of Lírio do Vale on the Amazon River in Brazil. Barlow is a member of a team of five U.S. Navy doctors who are joining the Brazilian Navy on a month-long humanitarian mission up the Amazon River. Together, the U.S. and Brazilian Sailors are delivering healthcare to some of the most isolated people in the world. (U.S. Navy photo by Mass Communication Specialist 2nd Class Andrew Brame/Released)