[DCBryan1]

Suddenly, you hear the unmistakable sound of someone jacking a shell into a shotgun. Do you proceed?

You assume the assailant is moral, rational, and unimpaired by substances.

You know what happens when you assume?

Don't assume. Like a previous poster said, the lock on the door/window was the first and LAST warning.

[South Dakota]

You assume the perp can just shoot the victim.
Not true.
The perp has to advance up some steps knowing there is a loaded shotgun waiting.

If they are on drugs they still are at a disadvantage.

Pickett’s Charge comes to mind