Staff Sgt. Christina Howland, 434th Operations Support Squadron Aircrew Flight Equipment Non-commissioned officer in charge, assists Senior Airman Eric Davis, OSS AFE helper in a test ran on helmets at Grissom Air Reserve Base, Ind., September 23, 2017. The helmet, an HGU-55-B helmet is used by pilots in special situations to safely navigate the skies. (U.S. Air Force photo/ Senior Airman Cali Wetli)
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