Perfectly clear, Bob-
In some states, you have the absolute right to use deadly force to protect your property- in most, you don't..
I'll certainly not ask questions of someone breaks in, or appears in any way to have communicated a threat to myself or my loved ones, and obviously has the means to carry out said threat.
In a lot of venues, the mere threat is considered an assault, if it puts the intended victim in fear. Well, I "ain't skeered", but if I get that way, woe be unto the scarer.
All of us shoot but my wife, and she's about to learn...
Lump