PACIFIC OCEAN (Sept. 28, 2021) Sailors hold the phone and distance line on the forecastle aboard the Arleigh Burke-class guided-missile destroyer USS Mustin (DDG 89) during a replenishment-at-sea with the Peruvian navy Amsterdam-class logistics support vessel BAP Tacna (ARL 158) during UNITAS LXII Sept. 28, 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 2nd Class James S. Hong)