Master Sgt. Eric Icenhower, 141st Air National Guard Survival Evasion Resistance and Evasion liaison, gives the thumbs-up before starting a simulation on the Reduced Oxygen Breathing Device June 26, 2017, at Fairchild Air Force Base, Washington. The ROBD can simulate high altitude atmospheric pressures to induce a controlled state of hypoxia in trainees.

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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