The U.S. Coast Guard’s icebreaker fleet has been stretched thin for years, and now the service is trying to rebuild it before the Arctic gets even more crowded and more contested. In this video, we break down the state of America’s current polar fleet, including USCGC Polar Star, the Coast Guard’s only active heavy icebreaker; USCGC Healy, its medium polar icebreaker; and USCGC Storis, the service