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Marine Corps Gunnery Sgt. Sean Whalen, an air defense coordinator with Marine Tactical Air Command Squadron (MTACS) 28, helps Sgt. Kayla Chappel with her mission oriented protective posture gear during a chemical, biological, radiological and nuclear defense drill during Ullr Shield on Fort McCoy, Wis., Jan. 18, 2018. Ullr Shield is a training exercise designed to improve 2nd Marine Aircraft Wing's capabilities in extreme cold weather environments. ( Marine Corps. photo by Cpl. Luisa Torres)
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Keywords: cold, freedom, ittb, marines, mtacs-28, shield, training, ullr, usmc, weather