Petty Officer 2nd Class Jeremy Spurgeon, an electrician's mate aboard the Coast Guard Cutter Healy, calibrates temperature sensors during maintenance operations while underway in Alaska Aug. 25, 2014. Electrician's mates aboard the Healy ensure the vessel's four 7,000-kilowatt generators run smoothly. (U.S. Coast Guard photo by Petty Officer 1st Class Shawn Eggert.)
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