A Marine with Marine Aircraft Group 29 writes notes on a white board during a planning conference for Ullr Shield on Volk Field Air National Guard Base, Wis., Jan. 21, 2018. Ullr Shield is a training exercise designed to improve 2nd Marine Aircraft Wing's capabilities in extreme cold weather environments.

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Photo credit: © Nelly George / Alamy / Afripics
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Keywords: 29, 2nd, aircraft, archive, armed, cold, defence, exercise, forces, group29, mag, marine, military, planning, reportage, servicemen, shield, training, ullr, usa, weather, wing