ARCTIC OCEAN – (From left) Carl Felten, Merchant Marine Academy Cadet Taylor Crisci, U.S. Coast Guard Ensign Annabelle Gagnon, Luc Rainville and Jeremy Wilkinson pull a buoy across the Arctic ice Sunday, Sept. 30, 2018, about 350 miles northeast of Barrow, Alaska. The buoy was deployed in the Arctic and contains a series of sensors to measure wind speed and direction, air temperature, barometric pressure and other measurements to study stratified ocean dynamics. The U.S. Coast Guard Cutter Healy (WAGB-20) is underway in the Arctic with about 100 crew members and 30 scientists to deploy sensors, buoys and semi-autonomous submarines to study how environmental factors affect the water below the ice surface for the Office of Naval Research. The Healy, which is homeported in Seattle, 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)