Also see One Second After by William R. Forstchen.
Reading that book when it came out was s “seminal event” for me. IT set me definitively on a very different planning-for-contingencies path.
While folks can argue over the exact nature of the ‘event,’ it’s the societal+economic disruption that was so eye-opening.
For you, I recommend you read the non-fiction works of Jonathan Hollerman ( https://www.griddownconsulting.com and Amazon Kindle) as well as his works of what I would call instructive fiction - the Equipping Modern Patriots trilogy.