USCGC Polar Star escorts the motor vessel Stena Polaris, the largest fuel tanker ever to reach McMurdo Station, through the ice-covered Ross Sea during Operation Deep Freeze 2026, Jan. 21, 2026. Pacific Air Forces operates on a 24-hour basis to provide the U.S. National Science Foundation complete joint operational and logistic support for Operation Deep Freeze. (U.S. Coast Guard photo by Ensign Madelyn Greene)