A1C Cathleen Durago, 9th Physiological Support Squadronaerospace and operational physiological technician, instructs students through preflight procedures during an altitude chamber training course May 31, 2018, at Beale Air Force Base, California. The altitude chamber is part of the process to maintain or initialize personnel’s flying status. The chamber is designed to depressurize, allowing it to act as if the inside is at a set altitude.

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Photo credit: © PR Library / Alamy / Afripics
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Keywords: 9rw, 9th, afb, altitude, beale, california, chamber, isr, kc135, physiological, pspts, reconnaissance, rq4, squadron, support, t38, training, u2, wing