U.S. Coast Guard Ensign Natalie Yurgil and Lt. j.g. Liam Long watch a National Science Foundation helicopter fly by the Coast Guard Cutter Polar Star 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)