"Finally, the CEO of a brokerage house explained that he had nearly completed building his own underground bunker system and asked, “How do I maintain authority over my security force after the event?”

The Event. That was their euphemism for the environmental collapse, social unrest, nuclear explosion, unstoppable virus, or Mr. Robot hack that takes everything down.

This single question occupied us for the rest of the hour. They knew armed guards would be required to protect their compounds from the angry mobs. But how would they pay the guards once money was worthless? What would stop the guards from choosing their own leader? The billionaires considered using special combination locks on the food supply that only they knew."

Wouldn't the guards simply torture you until you opened all of the locks?