Air Force Airman 1st Class Dallas Galvan, an aircrew flight equipment technician with the 379th Expeditionary Operational Support Squadron, tests the Scott 358 Quick Don Oxygen Mask at Al Udeid Air Base, Qatar May 16, 2017. Galvan is preforming an inspection where he plugs the Scott 358 Quick Don Oxygen Mask into the Scot Tester which simulates aircraft functions and air pressure.

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Size: 1609px × 1243px
Photo credit: © Ted Small / Alamy / Afripics
License: Licensed
Model Released: No

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