Dave, you scare me dude!
But seriously, I've had to "rack" my shotgun before. Few years back when I had moved into my house I heard something outside on the deck. Thought it was just a raccoon or something till I heard it again. Well I woke up and looked down on the deck and saw someone stalking around at the back door dressed in dark clothes with a black hoodie on. Just saw the person, not the face. Well I took my Mossberg 500, racked that sucker with a round of 00 buck. Needless to say it scared the sh** out of the guy. He froze as I looked down, he then jumped the deck and ran. Far as I know, never had a problem since or seen anyone. Now if he was already in the house, screw the racking sound. Call the cops and wait at the top of the stairs in cover with a loaded gun!