Firestarter, Day 3
Day three is almost completely identical to Bank Heist, as it occurs at the same bank (you think those guys would be used to this chaos by now). This time around, you have to burn money inside the vault.
Before you can get into the vault, however, you need to disable its electric barrier. Yes, the vault can now electrocute you through the drill. You'll find the panel to shut it off on the roof. Bust through the door here and shut off the shocking defense.
You can now proceed exactly as you would in Bank Heist. Things switch up inside of the vault, however. Once inside, set up the camera and burn the money. Once the dough is baked (zing!), grab the camera and head to the escape van.