There will be an EMP event, solar event, meteor event, or global war before a US Civil War. Who has the firepower to go up against the federal government with all their DARPA technology at their disposal as well as the National Guard Units etc etc. ? Moreover, by and large, we are a sick, addicted, and out of shape population. That doesn't translate well into effective fighters. Forget about a civil war. Ain't going to happen.