Mt. Erebus, the tallest active volcano in Antarctica and the southernmost active volcano in the world, is seen from the deck of the Coast Guard Cutter Polar Star in McMurdo Sound, Antarctica, Dec. 28, 2023. Operation Deep Freeze is one of many operations in the Indo-Pacific in which the U.S. military promotes security and stability across the region. (U.S. Coast Guard photo by Petty Officer 3rd Class Ryan Graves)