“After DB Cooper, ‘they’ made sure airliner doors can’t be opened in flight.:
Uh...no. The doors can be opened in flight, but the rear airstair door on 727s were disabled.
It would take some doing, and pressurization needs to be dumped first, but either the doors or an overwing exit most certainly can be opened in flight.
For even more in-flight fun, the emergency slides and any rafts carried on-board can also be inflated in flight. My cousin inflated a raft on an airliner once.
Checked it out ... interesting ... thanks!
what is the way to travel without looking ridiculous? Surgical mask ala Tokyo?
Gloves?