some crack heads looking to rob a gas station were able to take down power to a whole county with a gunshot. You can cut off direct military communication to various forts in the south east by cutting an unmarked cable in Atlanta.
if it was a stand up fight, sure it would be one sided. But it wouldn't be. there wouldn't be a green zone to fall back to. the military wouldn't be able to sit back and use agent orange to create safe areas for them to operate out of. They going to destroy a whole neighborhood that didn't pick a fight with them to land some helicopters like we would in Vietnam? They going go door to door like we did in Iraq ready to shoot anyone that looks at them funny?
The examples of our military fighting insurgents is laughable as we have 3x the ARMED population that either Vietnam or Iraq had total. and seeing as how neither country was privately armed before and still mounted the resistance they did, our population is 10x them, and then you add on the 100 million already armed and the problem they would face hear would be hugely different.
what manufacturing, repair, logistics, runs out of DC? our out of any of the 100+ military bases in the US?
and again, your whole assumption relies on getting an intact military ready for a fight against our civilians. there are 1.4 million total active troops, 100 million armed civilians, so it wouldn't be a 1vs5. each enlisted individual would need to kill 100, and not all enlisted are front line fighters, so each fighter would need to kill many times that number. and the other thing you refuse to address is that a high percentage of those 1.4 million soldiers are going to identify with that 100 million, as that will be there brothers, sisters, parents, and children. they aren't busting in on some far away foreigner they know nothing about, they are busting in on their neighbor Tom, wife Susie, and their own son's friend Billy. that's a steep ask.