Two huddles of Adélie penguins walk toward each other next to the channel made by the Coast Guard Cutter Polar Star (WAGB 10) in McMurdo Sound, Antarctica, Dec. 28, 2023. U.S. Coast Guard Cutter Polar Star is enroute to Antarctica in support of Operation Deep Freeze, a joint service, interagency support operation for the National Science Foundation, which manages the United States Antarctic Program. (U.S. Coast Guard photo by Petty Officer 3rd Class Ryan Graves)