U.S. Coast Guard divers Petty Officer 2nd Class Chuck Fox and Petty Officer 1st Class Brian Lehuede swim during a scientific research mission in support of Operation Deep Freeze in McMurdo Sound, Antarctica, Jan. 7, 2024. Operation Deep Freeze is the logistical support provided by the Department of Defense to the National Science Foundation-managed U.S. Antarctic Program. (U.S. Coast Guard photo by Petty Officer 2nd Class Ryan Graves)