Capt. Jason Hamilton, commanding officer of Coast Guard Cutter Healy, addresses crew members and scientists during quarters at the North Pole Sept. 7, 2015. Healy is underway in the Arctic Ocean in support of the National Science Foundation-funded Arctic GEOTRACES, part of an international effort to study the distribution of trace elements in the world's oceans. (U.S. Coast Guard photo by Petty Officer 2nd Class Cory J. Mendenhall)
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