We've had the same terror warnings here in the DC area. And I hear in the NYC area also. The hardware stores are doing great business in plastic sheets. I suppose that is a good idea in case of a dirty bomb. However, I hope that a dirty bomb only makes the air dirty for a limited time, because if you successfully close off all outside air, you will only have a limited amount of air inside the closed space. You can't stay in a totally closed off space indefinitely unless you have a way to filter outside air. Maybe using plastic to seal off rooms doesn't totally close off rooms and only filters to some extent. Does someone know? Otherwise, you'll eventually run out of breathable air. That said, I'm going to make sure I have batteries for the radio, some canned goods, water and maybe some plastic for my little apartment.