Members of the Wayuu ethnic group watch as a US army helicopter arrives for a joint exercise in the "Tres Bocas" area, northern Colombia, on the border with Venezuela, on March 13, 2020. - Military personnel and doctors from Colombia and the United States carried out joint exercises near the border with Venezuela, aimed at facing hemispheric threats and humanitarian crises, said the spokespeople for both countries. (Photo by Juan BARRETO / AFP)