Seeking Refuge #4

For some reason, many people consider banks to be a secure area to hide out during an undead invasion.  This theory proves true for only so long.  The vaults in a bank are indeed built to keep people from getting in, but the moment they are sealed where do you go from there?  No, zombies won’t be able to get in, but you have pretty much doomed yourself because of the short supply of oxygen that will be available to you.