If you have to draw on someone, the site of the gun in your hands is going to be enough of a detterent or it's not. If brandishing isn't going to prove to the BG that you're willing to put him away, than firing a warning shot probably won't prove your resolve either. That shot's just another bullet flying around that probably shouldn't be.
Firefighter/EMT - Currently teamed on Engine 1... I always get to play with my Knob!
"Good judgement comes from experience and experience comes from poor judgement" - Unknown.
"An armed society is a polite society. Manners are good when one may have to back up his acts with his life." - Robert A. Heinlein