Marine Coprs. Cpl Angel Gonzales, a water support technician with Marine Wing Support Squadron 271, drills a hole on a frozen lake during Ullr Shield on Fort McCoy, Wis., Jan. 18, 2016. Ullr Shield is a training exercise designed to improve 2nd Marine Aircraft Wing's capabilities in extreme cold weather environments. ( Marine Corps Photo by Lance Cpl. Jailine L. Martinez)

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Keywords: 271, 2nd, aircraft, chamber, cold, confidence, exercise, fob, fort, freedom, gas, marine, mccoy, mwss-271, range, shield, squadron, support, training, ullr, weather, wing, wisconsin