HUACHO, Peru (Oct. 2, 2021) Peruvian President Pedro Castillo and Rear Adm. Jim Aiken, commander of U.S. Naval Southern Forces Command/U.S. 4th Fleet shake hands after observing the amphibious assault at Las Salinas Beach during UNITAS LXII, Oct. 2, 2021. UNITAS is the world's longest-running maritime exercise. Hosted this year by Peru, it brings together multinational forces from 20 countries and includes 32 ships, four submarines, and 26 aircraft conducting operations off the coast of Lima and in the jungles of Iquitos. The exercise trains forces to conduct joint maritime operations and focuses on strengthening partnerships and increasing interoperability and capability between participating naval and marine forces. (U.S. Navy photo by Mass Communication Specialist 1st Class Mitch Meppelink)