Comment Re:Vacuum? (Score 1) 107
The question was what happens when there is a leak and you cannot breathe, not what happens if there is a complete loss of cabin pressure/air. Planes don't fly in a vacuum, but they do fly in substantially less air pressure, which is why we pressurize planes. If the capsule lost all air pressure then yeah, they're going to have a really bad time and air masks are not going to save them, but as another answered they would seal off the segment and provide local atmosphere.