Senior Airman Tony Cibarich, 9th Airlift Squadron loadmaster, dons a 358 Quick Don Demist oxygen mask during a test and evaluation training flight, June 15, 2021. The 9th AS aircrew tested mask modifications for Air Mobility Command’s test and evaluation team which will assist in determining further modifications. (U.S. Air Force photo by Senior Airman Faith Schaefer)
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