As to shooting a bad guy 35 feet away, or 20 yards, or 50, it's all a moot point. If a bad guy is doing something that justifies you in shooting him, the distance is pretty much irrelevant. Justification of the use of Lethal Force, especially if he has a firearm, is the same. If he has a knife or a club and is not an immediate threat to anyone, shooting him is wrong, period. If he has the means to close the distance and do serious harm to someone, my job is to prevent that. Being it by showing the weapon, threatening him with it or using it, I am responsible for the safety of the people on my work site. In essence, I am the guard dog. Step into my yard, and I will show my teeth. Attack my "family", and I will attack you, with GREATER force than you display. And I will keep on chewing on you until you are no longer a threat. After all, I didn't start this fight, you did!
Grrrrrrrrrrr.
PJ the Pit Bull