Best way to handle a late night knock on your door

two-niner wrote:
The recurring thought here is that something bad is knocking...

And should be met with deadly force. :S

Do the same thing you would at home. Leave the door secure, ask them if they need you to call 911 for them. If not, wish them a good night.

BTW, not to many rest areas are cell phone free, maybe they will be roaming, but 911 is always free.