EVs and The Bug Out

Bewy said

And what EVs & bush [ wild ] fires? Power has been cut, so soon the batteries in the fire trucks will be flat, 'cos those water pumps eat electricity.

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I am an Engineer/ Fire Engine Operator on a Type 3 wildland fire engine. I can pump 300 psi, at 2000 rpm engine speed, on a 5000 ft. hose lay all day long and use less than a 1/4 of a 70 gallon tank. If it was electric I would have to deploy a 1/4 acre of solar panels to power that (I jest).
One huge benefit of fossil fuels is we can bug out quickly by just disconnecting the hose at the pump panel on the truck. If you face a blowup or burnover and have solar panels deployed what do you do? We operate in the back country and at times we have over a hundred vehicles, large trucks and pickups, in camps in the backcountry. How are you going to charge all the trucks?
We have a Hotshot crew here in California testing the new Stihl battery powered chainsaws. They cut great but the saw team has to carry 8-10 batteries and also carry a solar panel that charges like one battery all day. It is a total mess. Adds weight, decreases mobility, adds hazard, ....