I would get my M60, and my underground bunker.
First off, I doubt you could handle even a 12-gauge shotgun. Secondly, how the hell would you get an underground bunker?
I'll get some supplies and bring fooda nd stuff back.
Depends where you get the food from.
My best guess would be from homeless shelters, since people there would die first, and there would be lots of supplies since a lot of people live in shelters.