Lt. Mark Sporay teaches crew members aboard U.S. Coast Guard Cutter Healy (WAGB 20), the largest polar icebreaker in the Coast Guard's fleet, about ice
characteristics as the cutter transits north off the coast of Alaska, June 29, 2025. Healy serves primarily as a platform for supporting science in the polar regions but also assists with search and rescue, environmental protection, and enforcement of laws and treaties. (U.S. Coast Guard photo by Petty Officer 1st Class Steve Strohmaier)