LAKE ONTARIO -- Petty Officer 3rd Class Yevgeniy Perinskiy, an Electrician's Mate, instructs Petty Officer 3rd Class Trent Lamun, a Damage Controlman, on the proper procedure for conducting oil sample tests onboard Coast Guard Cutter Alder, July 18, 2010. Alder is underway as part of Operation Nanook, one of three major operations conducted per year in the Canadian Arctic, designed to demonstrate international cooperation and expand the international ability to respond to emergencies in the Arctic. (U.S. Coast Guard photo by Petty Officer 3rd Class George Degener).
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