U.S. Marines with 4th Assault Amphibian Battalion, a unit based out of Tampa Bay, Florida, conduct vehicle recovery exercises with amphibious assault vehicles during UNITAS LX on the Brazilian Marine Corps Base of Ilha do Governador, Brazil, Aug. 19, 2019. UNITAS is the world's longest-running, annual exercise and brings together multinational forces from 11 countries to include Brazil, Colombia, Peru, Chile, Argentina, Ecuador, Panama, Paraguay, Mexico, Great Britain and the United States. (U.S. Marine Corps photo by Sgt. Booker T. Thomas III)