Further, you can't presume the military in the USA would be 100% behind a tyrannical government, and if the majority of the people are against the government, the military would have reason to be party to a coup against the government in order "...to alter or to abolish it, and to institute new Government, laying its foundation on such principles and organizing its powers in such form, as to them shall seem most likely to effect their Safety and Happiness..." After all - the military needs money, and the citizens pay for it - and the military is essentially comprised of its citizens.
You buried it in the middle there, but this is the crux of my argument. You're not going to be as well-equipped as the military, and if it came down to some weirdly dystopian extermination of the civilian population then I have no doubt that the combined might of the US armed forces (both state and federal) could handle a 15:1 ratio with aplomb. Aside from everything else, you'd start with the low-hanging fruit and thin the numbers out before taking on the end-of-level boss.
But these military personnel are still people, and they still have families that they wouldn't take kindly to being asked to slaughter. They are the ones who would stop the lunacy. Armed forces of the people, for the people and by the people, if you will...
Biting the hand that feeds IT
