A U.S. Army Ranger tests his oxygen mask before
Summary
A U.S. Army Ranger tests his oxygen mask before high-altitude training in a hypobaric altitude chamber at Langley Air Force Base, Va., Nov. 14, 2014. The Rangers are attending parachute school and must first pass testing in the chamber. (U.S. Air Force photo by Staff Sgt. Natasha Stannard/Released) (This photo was cropped and levels were adjusted to emphasize the subject)
Tags
Date
14/11/2014
Location
Source
Defense Visual Information Distribution Service
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