United UNITAS Navy forces transit the Pacific Ocean during UNITAS LXV, Sept. 5, 2024. The Chilean navy is hosting this year's exercise, which includes 17 ships, two submarines, 20 aircraft and more than 4,300 personnel from 24 partner nations. UNITAS is the world's longest-running multinational maritime exercise. SHARE: Download: Full Size (1.82 MB) Tags: Southern Command, Navy, UNITAS LXV Credit: Navy VIRIN: 240905-N-N3764-1002C.JPG Photo Gallery