Tech. Sgt. Oscar Pena, 92nd Aerospace Medicine technician, gives a three minute warning to Master Sgt. Eric Icenhower, 141st Air National Guard SERE liaison, during a Reduced Oxygen Breathing Device simulation June 26, 2017, at Fairchild Air Force Base, Washington. SERE specialists use the ROBD to simulate high altitude hypoxia effects they may experience on a parachute jump mission.

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Photo credit: © Dudley Little / Alamy / Afripics
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Keywords: afb, air, airmen, america, archive, armed, army, defence, fairchild, force, forces, hypoxia, military, navy, reportage, service, serviceman, servicemen, soldier, states, united, usa