The U.S. Coast Guard Cutter Polar Star (WAGB 10) and crew receive a water salute as they transit the San Francisco Bay upon their return to the United States following their 128-day deployment to Antarctica in support of Operation Deep Freeze 2025, March 30, 2025. Every year, a joint total force team works together to complete a successful Operation Deep Freeze in support of the U.S. National Science Foundation – the agency that manages the United States Antarctic Program. U.S. Coast Guard photo by Auxiliary Public Affairs Specialist Roger Bazeley.