I won't go into any more details, but I can say that as recently as eight years ago the defense industry and our government partners were deeply concerned about a deliberate high altitude attack, the effects of which I referenced as available in open source. It would be catastrophic.
A lot of press attention goes to the power grid - a legitimate concern. But distribution level is even more frightening.
A won't go into any detailed assessments, but as an example, there is not a single piece of EMP hardened transportation equipment in the nation. Not a single truck. If the end item has a circuit board, it is likely fried. Imagine any city, small, medium or large cut off from food distribution for months. The death toll would be staggering.
The "One Second After" series is really good. I have a hard time believing things have "improved" much since those books were written, I mean we have mass looting and shootouts in broad daylight with the power on right now you know?
2 interesting stories:
I was at a DOD language course in 2014, had this older DIA guy there that was pretty cool. One night we're all hanging around having some beers (too many) and whatnot, and we get talking about this kind of stuff bc someone had mentioned a zombie movie or something. This dude had gotten pretty drunk, and was more than likely giving us more than we should've gotten, but we were all friendlies. He mentioned he had worked on some stuff in regards to this problem set in sort of like a chaos theory cell of sorts. Needless to say he gave the whole "it would be horrible" rundown, pretty safe assumption of what would happen if the entire East Coast lost power for 8 months to a year. Like yourself I'll refrain from details. But one of the things he mentioned that really stuck out to me was they had factored in how many health professionals would be required to deal with the illnesses (physical and long term mental) caused by cannibalism in places like the greater NY metro area, assuming there was a recovery in the long term and govt institutions could get back up and running.
Fast forward to 2017....
I was working in an Instructor billet and our section didn't have students at the time. So during those breaks they would send guys to individual schools, and if you weren't at a school or anything you had a pretty light schedule, helped out with the other sections maybe, lots of early days. So it was a Friday or something and myself and two buddies from the section had just gotten back from lunch, it was probably around 1:30 in the afternoon and basically we were all just sitting around our office about to start the process of sliming out for the weekend.
Our section chief comes in and asks what we were doing/ working on...
Us: "nothing, waiting for you to tell us to leave."
him: "alright well the G2 has some guest speaker giving some kind of threat brief in the auditorium at 1400, I don't what it is or who the guy is, but they want whoever is available to go, so you guys go to that and then you're good to leave for the weekend"
Us: "Roger!"
So we go down to where it was being held, wasn't a super huge crowd, maybe 45, mostly Intel guys (from all disciplines) , I think they had all the students from whatever intel course that was running at the time all attend as well. Anyway we spotted a handful of other Team guys and went and sat over there with them. We started asking them what this thing was about? This isn't some retarded "don't leave your ID card laying around" thing is it? One of the guys said "I think it's supposed to be about nukes or something". Sure, whatever, and we chatted until the speaker showed up.
The guy was a civilian, gave his first name and said he "worked up in Northern VA". Then for the next hour and some change he proceeded to scare the shit out of everyone in the room about EMPs!!! I'm talking nobody was having sidebar conversations, nobody was dozing off, everyone was focused. Guys were doing the slow motion dip spit into their spitter bottles type paying attention, haha. Anyways the contents of his brief and powerpoint were extremely alarming. Its INSANE how vulnerable the US is and the extent of the damage these things would do our country/society, and how easy (on the grand scheme of things) it would be for a well organized group to pull it off.
After his presentation there was no Q&A, he just said thanks for your time gents, and walked out. My buddies and I got up and headed to the parking lot, in silence. I remember one of us finally asking, to the group, "Okayyy, why did we just get that brief?". We kind of all came to a similar conclusion that being at least a mild prepper was the way to go ( I was already ahead of them, haha).