17 March 2026 U.S. Coast Guard Cutter Polar Star completes Operation Deep Freeze 2026 mission, departs Antarctica SOUTHERN OCEAN — The U.S. Coast Guard Cutter Polar Star (WAGB 10) departed McMurdo Sound, Antarctica, on March 1, after operating for 55 days below the Antarctic Circle and traveling 14,000 miles in support of Operation Deep Freeze 2026...