You never know when someone unexpected might decide to pay you a visit.
Homeowner fatally shoots alleged ax-wielding man in Montgomery County
Not sure what I would do if I saw someone drive up into my yard. I would probably walk outside as well to see if the person lost control or needed help. Of course, the homeowner is lucky he was able to get to his gun. The "armed himself" bit of the story about the homeowner makes me think he had to go retrieve it. If that is the case, then it just illustrates once again to always carry your gun on you. Just make it a habit like you do with your wallet and keys.