Well none left that they can find is possible.
We don't know how far gone the SHTF scenario has progressed. The soldiers may be operating without a command structure above them. Then of course the drugstores and liquor stores are the first hit when rioting starts and we already know that happened and they were burning buildings. Throw in hoarders like Tobias who were better prepared and had a plan the area might be devoid of useful drugs after looting and fires etc.
I know in our area we went without power for 11 says and by day 5 my parents could not get their prescription medicine anywhere in a three county area. And no one was burning down anything nor stores were being robbed. Our whole system for providing drugs and food to the masses has been slowly transformed into a just-in-time delivery system. Which means there is not much stockpiled at the point where consumers buy these things. This stuff is stored in large distribution centers which is a problem because a bit of gas and some matches and lots of valuable stuff is gone in a flash.
Good points, thank you.