ARCTIC OCEAN – Nick Hukriede wraps a rope around a cable Wednesday, Oct. 3, 2018, about 715 miles north of Barrow, Alaska, in order to lower an ice tethered profiler into the Arctic Ocean. An ice tethered profiler moves along a cable underneath the Arctic ice and takes scientific measurements, including temperature, depth, current and salinity, and transmits that data using satellites to scientists in the United States for analysis. 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 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)