Well, the entire idea behind safes keeping things safe is that the tools that you can easily use to crack a safe are so clunky or loud, you’d pretty much alert every cop and security guy around to your presence.
But lucky for us, all the security and law enforcement have either joined the undead or are triffid fertilizer by now so just blowtorch away!
Edit: Of course, if you really make a lot of noise, you might just draw a horde into the bank vaults… with no way out.