person A: There is a tornado coming. But I have the pantry full and am ready this time.
person B: Good thinking.  You can never be too prepared_comma_ only under prepared.
person A: You never know how long the power might be out for! 
person B: Yep! or if you're house will be hit.  Many possibilities with tornadoes!
person A: It could take a while for any sort of rescue to come! 