[bradly]

Not sure about defcon, but Buckminster Fuller wrote waay back in the sixties about the New York's vulnerability to a fresh water supply attack.

If you haven't read it Operating Manual For Spaceship Earth is one of my favorite books.

https://archive.org/details/operatingmanualforspaceshipearth...

[firefax]

I'll throw it on my list, I've got a pretty big backlog right now.