Here is a snip from CLEET handout #1. This handout that is required to be given out for every student. This material is not in the SDA booklet.
Deadly Force Summary Handout #1 *
NEVER POINT OR SHOOT YOUR GUN AT A PERSON UNLESS:
Your life is in danger at that moment;
The life of your mother, father, husband, wife, child, employee or employer is threatened at that moment;
Your home is invaded and you believe the person will harm you or another person in your home;
Only the use of your gun could STOP THE HARM OR INJURY.
Our interpretation of this is as followed. You can only protect someone you have a relationship with. Do not use deadly force if you do not know the people involved. You may not know who the actual bad guy is and end up helping the scumbag.
The old law used to read this way. Apparently CLEET has never updated this handout. Either that they want people to always err on the side of caution and this is a good way to enforce that. Most people won't go back and re-read or keep up with the law.