I'm about 30 miles east of the http://en.wikipedia.org/wiki/Savannah_River_Site. If an enemy were to nuke America, I'm in the "puff plume" of one of the most likely targets.
If I did manage to survive, I'd probably be ghoulified.
I'd hit the local hardware stores, and hoard as much .308 ammo as I could find, then take my rifle to the nearest three story building overlooking a major avenue of egress. There, I'd name myself Arkansas, and start taking head shots at any passing refugee that happened to wander by. I'd hold that position until either my fingers fell off, or someone managed to flank me on the blind side, and put an end to my reign of terror.