So you are saying if some backwoods militia in West Virginia starts killing cops, which escalates to shooting SWAT, which escalates into shooting army/national guard types....the government is just going to give up and say "FUG IT! Those guys are tough!".
Hell no they are going to get blown out of their little mobile homes.
Might want to check with the Soviets about this little shitstorm they got themselves into in Afghanistan in the 80s
Or maybe the US Military and the same hornets nest they kicked over in various parts of the middle and far east over the last 50 years.
Also read your Sun Tzu. Especially the parts about where to confront your enemy with particular attention to the notion of "Deadly Ground".
Anyone who thinks that the US mil could just fly some A10s and Apaches overhead and park an M1A1 on the corner of Main & Market in Anytown, USA and quell a revolution is forgetting their history. The Soviets couldn't stop their Union from breaking down and they had what was at the time either the most or second most advanced military in the world. History is replete with examples of how smaller less technically advanced armies held off and in some cases were victorious against larger better equipped forces.
Also you cant assume that the WV Air Guard would simply fall in lock step with the order to blast their neighbors into oblivion.