Damn I enjoyed reading every bit of this despite my hatred for history. Used to see this in books but never knew the story behind it. It's unfortunate that there are a lot of mystery behind the blimps as I couldn't wrap my head around why the two crew members were missing.

Mayb they had jumped off when the blimp had an issue and started flying higher than expected. But if the crew were still alive, they would have reported back somehow, even if it took years to.

Anyways, this was very informative. I have learnt something new today. Thanks for sharing @donkeypong