Both arguments have merit.
Firing cannot be undone and will cost you $100,000.00 in legal fees for a “clean” shoot in some states.
Armed BG in your house, in a state with a Castle Doctrine law, - you are probably left with some sheetrock and trim work.
Other situations - all bets are off.
Heh....thats a real clean shoot. If a suspect exsanguinates or you debride him of several lbs of flesh, expect a $10k cleaning bill from a bio-cleanup specialists.