Deer season annually shows that some 16,000,000 Americans are mostly pretty well equipped to act as snipers, with their self-supplied long-range rifles, cammo, transport, comms, local networks & teams, logistics, etc. Even Bubba with a shotgun is a lethal opponent, knowing the area and determined to kill something.
Tanks, fuel-air bombs, stealth fighters, etc. are all designed to take on a comparably-equipped opponent in an all-out head-on international assault - and do little against armed individuals diffused through the general home population. Precision guided weapons are occasionally used in Iraq to dramatic effect, and there may be a quarter-million US troops there, but that whole operation comes down to a few thousand grunts with rifles going room-by-room - and most of that is not dealing with the indiginous population, but instead rooting out foreign troublemakers.
Our Founding Fathers - a bunch of self-armed farmers - took on the reigning superpower of the day and won, despite the overwhelming firepower of cannons, battleships, etc. on one side. Thing is, those heavy weapons were usually hard to apply against a blended indiginous population. If a major army were trying to neutralize YOU today, they would not be using B2 bombers to drop MOABs on your location, nor would they use battleships - they would mostly just send a team in your general location and hunt you (and your team) down with weapons little better than yours.