AMAZON RIVER, Brazil (Nov. 27, 2017) Cmdr. Carlos Marco, Manaus Naval Polyclinic Director, left, comforts a 14-year-old indigenous boy aboard NAsH Soares de Meirelles on the Amazon River in Brazil. Lt. Cmdr. Thomas Barlow, a U.S. Navy doctor, right, and 1st Lt. Priscila Tomy Ribeiro, a Brazilian medical officer, middle, clean the gunshot wound in the boy's hand. After the injury, the boy's family had hailed the NAsH Soares de Meirelles, which was passing along the river, and had used a small boat to bring him to the ship for medical attention. Barlow is a member of a team of five U.S. Navy doctors who are engaging in a month-long humanitarian mission up the Amazon River. The team is working with the Brazilian Navy to deliver healthcare to some of the most isolated people in the world. (U.S. Navy photo by Mass Communication Specialist 2nd Class Andrew Brame/Released)