The only "warning shot" advisable in a situation that justifies firing a shot at all -- should be directed at center of mass on the perp......for effect.
If the desired effect is not achieved -- fire again, and multiple times as required.
58 posted on 08/13/2008 10:02:50 AM PDT by river rat
(Semper Fi - You may turn the other cheek, but I prefer to look into my enemy's vacant dead eyes.)