MCMURDO STATION, Antartica (Jan. 28, 2023) The heavy ice breaker USCGC Polar Star (WAGB 10) keeps shipping channels open approaching McMurdo Station, Antarctica. Joint Task Force–Support Forces Antarctica (JTF–SFA), oversees the activities of the joint services and provides Department of Defense support to the National Science Foundation (NSF) and United States Antarctic Program (USAP) through Operation Deep Freeze. (U.S. Navy photo by Senior Chief Mass Communication Specialist RJ Stratchko)