Gimme a break!
IR scanners will see you like you walked out of Chernobyl miles away.
And then there's the GMLRS (AKA the "Grid Square Removal System") and other (real) artillery:
The weather forecast--sunny with a high likelihood of steel rain.
As Matthew White says "The most likely outcome of a war between the Feds and the extreme right is that the extreme right is crushed like bugs, even before the network news anchors can move their mobile newsdesks, satellite link-ups and tactical hairdryers out to the battlefield."
Have a nice day!