Security: In a Disaster Command and Control Communications Always Break Down

" There are no secrets in the world. The only hard part is finding the right person to ask," "If you have a phone, you can find out anything you want in under 60 minutes. With the Internet, it's even faster." -- Tom Clancy

"Hello? Hello, Dimitri? Listen, I can't hear too well, do you suppose you could turn the music down just a little? Oh, that's much better. Yes. Fine, I can hear you now, Dimitri. Clear and plain and coming through fine. I'm coming through fine too, eh? Good, then. Well then as you say we're both coming through fine."  ~ Dr. Strangelove
Trusting cell phones to work in many emergency situations can be dangerous or fatal.