Glennmac,
Nope Ernie and Gordon got it right. Deadly force is deadly force. It does not matter what ones intent according to the law. Your scenerio is an illustration of the "Warning Shot." In your scenerio you did not mention if the bad guy had a weapon or if the antique store person felt like their life was threatened. If the Store Person felt their life was in danger, and a reasonable person would also share in that opinion, i.e., the DA and/or jury, then deadly force was acceptable to use. If the Store Person's life was not endangered they still used deadly force, they did shoot the firearm afterall, and they are in deep doo doo since their life was not threatened.
I pretty sure this stuff applies throughout all of the US since its based of Supreme Court decisions. The only wiggle room in this is that the Surpeme Court/lower court decisions I'm thinking about usually are applied to law enforcement. So MAYBE, but I would not bet a cent on this, but maybe it would not apply to citizens. In cases I know of, as well as a Tennesse case which the Supreme Court decided, EVEN if the state statute allowed the use of deadly force in a given situation, say to prevent a robbery, if ones life is not directly threatened you are nuts to employee deadly force. While one might avoid prison time they wont' avoid being dragged through the courts. I'm pretty sure I discussed some of this earlier in this thread.
The bottom line is if ones life or someone elses life is not being threatened, then the use of deadly force is a no no. Most law enforcement agencies that I know of do not allow the use of a warning shot. They are expressly forbiddon. So if an officer uses a warning shot they might not go to prison but they most likely will be looking for a new job/career. A citizen might get away with it but I would not bet my family's financial future.
Don't shoot unless one can articulate that one's life is threatened. PERIOD!
Besides, I'm not sure how the TBN Physicists would do on the stand. /w3tcompact/icons/smile.gif
Later...
Dan