Since everyone on here is basically summarizing the book I posted above. Here is the gist of the book that was written after 10/7. Everything in the book is plausible. Save the tin foil hat comments, just summarizing the book.
Basically with our border wide open, terrorists teams that had no knowledge of each other were put into place with a handler all across the US in major cities. Once green lighted via their handler they all attacked thinking they were the only team doing the attacking.
First day, obvious soft targets in public places (schools, event venues, malls, public markets). Multiple teams in the same city, repeated in many cities across the US and simultaneous cyber attack to taking down 911 in the city (anyone remember recent reports of widespread 911 outage?). No LEO knew to respond and when they responded by firsthand account over the radio, there were multiple targets to overwhelm the response. Throw in a couple airlines taken down at airports and you have nationwide mayhem.
2nd day, Martial law/ curfew is declared by US, and everyone is to remain at home while LEO and NG go around trying to take out first day terrorists. The attack on day 2 by the second wave is Oct 7th style and they go to neighborhoods, where LEO is not present, house to house.
3rd day: 3rd wave takes out infrastructure like power plants, electrical grid distribution, and food distribution centers, i.e. giant refrigerated warehouses.
Imagine a city like Los Angeles with no food for 3 days. If you live there you may want to rewatch "Escape from L.A." LoL
My advice, measure out 100 yards from your house and mark the curbs with spray paint for a poor man's range finder.