30 rounds, eh?
Once they start shooting, it's hard to get them to stop, and they'll swear on a stack of bibles that the 'bad guy' started shooting and they only returned fire. Then we find out the dead suspect has an empty BB gun, or a fully loaded gun with the safety still on, or a fully loaded gun and a detective's badge. (well, the clown in Florida missed the detective with a full magazine and then some, so no 'dead suspect' in that one)