CALLAO, Peru (Oct. 4, 2021) Peruvian navy diver Technical 3 Juan Perez waits for his dive buddy to conduct deep dives and surface decompression drills as part of a subject matter expert exchange with U.S. Navy Mobile Diving and Salvage Unit 2 during aboard the Peruvian navy salvage tug BAP Morales (RAS 180) UNITAS LXII, Oct. 4, 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/Released)