Risk of where that bullet goes after it is shot in the air or on the ground. Also going back to what I was taught and has been repeated by different instructors (my state, their laws) is if you don't intend to shoot the person you should not draw. Drawing to fire a warning shot doesn't fit into that. However my thoughts of "the situation changed from draw to fire" is my thoughts and is not echoed by them.

Much of what is taught is forced on how the courts see certain things. It's unfortunate but that's the way it is. It's complicated and it's messy. A situation like seeing someone steal your bike chained outside a store isn't enough to draw where I am at though protecting a person who is in deadly harm (not just getting a slap) is. And on and on. About every three months I read through what could be called "The average person's guide to carrying concealed" and they cover the laws, situations and outcomes, etc. Each time I shake my head and know that I have to be very sure of what I'm doing if I was to ever draw my weapon. I hope to never do so but it's there if needed.