Marines from Brazil, Ecuador, Dominican Republic, Paraguay, and Uruguay sprint from the starting line during a 'Marine of Steel' event in Ilha do Governador, Rio de Janeiro, during exercise UNITAS LXIII, Sept. 4, 2022. UNITAS is the world’s longest-running annual multinational maritime exercise that focuses on enhancing interoperability among multiple nations and joint forces during littoral and amphibious operations in order to build on existing regional partnerships and create new enduring relationships that promote peace, stability and prosperity in the U.S. Southern Command’s area of responsibility. (U.S. Marine Corps photo by Lance Cpl. Trystan Taft)