Fireman Austin Moilanen, a member of the Coast Guard Cutter Polar Star’s engineering department, removes soiled filters from the cutter’s fuel coalescer while underway in McMurdo Sound, Antarctica, Jan. 28, 2016. The fuel coalescer purifies diesel fuel prior to distribution to machinery systems. (U.S. Coast Guard photo by Petty Officer 2nd Class Grant DeVuyst)
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