Heavy armaments are tools of obliteration, not of occupation. You can't search homes with a drone. You can't enforce curfews with a battleship. Such weapons are useful in subjugating a foreign state whose people and infrastructure you care little for; they are not practical in suppressing widespread domestic insurrection. To control a population, you need boots on the ground, armed with small arms - against which we the people are evenly matched technologically and vastly superior in number. There would be nothing perpetual about the guerrilla situation - the feds would run out of feds.
A revolution is a matter of public opinion even more than it is a matter of martial might. The day that the feds start nuking their own people is a day by which they have already lost the war.