Slightly unrelated but a good place to plug my recent hobby. Meshtastic. set up a node and coordinate with friends to connect the whole area.

Not only it is a secure clandestine chat network. it will work when the networks are down, allowing you to coordinate with everyone. Give them a battery/solar and they will work no matter what, electric grid down, you can still coordinate.

I am currently working with local action groups to get the whole city connected