ARCTIC OCEAN – U.S. Coast Guard Petty Officer 1st Class David Edelson drills a hole in the ice to conduct an ice survey Tuesday, Oct. 2, 2018, about 715 miles north of Barrow, Alaska. Edelson is stationed aboard the Coast Guard Cutter Healy (WAGB-20) out of Seattle, and as a member of the ice rescue team, Edelson conducts surveys of the ice conditions to ensure its safe for members of the crew and science party aboard the ship. The Healy is underway in the Arctic with about 100 crew members and 30 scientists to deploy sensors and autonomous submarines to study stratified ocean dynamics and how environmental factors affect the water below the ice surface for the Office of Naval Research. The Healy is one of two ice breakers in U.S. service and is the only military ship dedicated to conducting research in the Arctic. (NyxoLyno Cangemi/U.S. Coast Guard)