It helps to remember that the Hindenburg was more or less parked when it exploded... I think it was like 30 feet in the air? (I'm probably wrong about the number, but I don't think I'm very wrong.) Most of the passengers basically jumped off. And, sure, a 30 foot drop is no walk in the park, but it's not that surprising that most people survive it.
(Well, then “out of the sky” is kind of an exaggeration, since you wouldn't normally consider yourself to be in the sky when on a balcony on the fourth floor.)
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