What if…Last minute shopping

It is the middle of December and you’re out doing some Christmas shopping. Just as you enter your local big box discount retailer (Target, Walmart, whatever), your cell phone rings. A trusted contact, someone in your immediate survival group, tells you he has reliable information that the balloon is going up in a matter of hours. The news of this hasn’t hit mainstream media yet and probably won’t for at least the next hour. You have time to do one last shopping spree at this store. As luck would have it, since you came prepared to buy Christmas presents, you have about $400.00 cash in your pocket.

What do you buy? What gaps might you have right now in your preps?