I find this story to be very odd, not because I begrudge the porn industry of preparedness from their stated fear of radioactive zombies, but because of all ideas to build a haven from worldly disaster they decided on building a bunker underground near one of the most active fault lines in the world. I think I would build a single-story hardened structure right on the surface, but then again I'm not an earthquake expert. I would also put the Sliding Gun Rack Compartments next to the Security Insertion Checkpoint. That's just me though.
To be fair to the porn industry, at least they are finally planning for the inevitable fact that they will miss the rapture. That's being prepared!