Your argument presupposes that all functionaries of the state would act in unison. What if they don’t?
Around one quarter of US Army offices resigned their commissions to join the confederacy. Likewise military officers largely split in the same percentage with White factions favored over Red in the Russian Civil War.
Recall that at Tiananmen Square, the Chinese military had to bring in units from outside the local area and tell them that the demonstrators were subversive outsiders for fear of the local troops refusing to shoot their own. Reports have surfaced that the Islamic regime in Iran brought in Arabs to slaughter unarmed protestors earlier this year.
In the unlikely event of such a conflict happening here, the outcome would largely be dependent on the level of popular support given to one side or another. Those cameras you mentioned might stop functioning if local operators were opposed to an authoritative regime conducting surveillance on the people. Local commissars charged with overseeing vast American farmlands may begin disappearing at night. Every shipment of foodstuffs would need armed guards, some of whom may abandon the train along the way.
If the state is always invincible, then revolutions would never succeed.
Every bureaucracy in the country, even in conservative states, is heavily, if not overwhelmingly populated with Democrats.
Useless people don't seek real jobs and desire the security of a government position.