In the event of a catastrophe and communication is cut, if it's not cellular connections (those can get powered down or lose signals), they will utilize Ham and CB shortwave radios for communication. Channel 9 is the official FCC emergency channel. :P
My old man messed around with radio and electronics, learned this knowledge from him. CB can go anywhere.. they use it out there for expedition treks, grand canyon, forest rangers, so on... That's how they can communicate where cellphones can't.
