Things could have gone very bad.
Agree and the results are the best that could have been hoped for. No one hurt or seriously injured and the bad guys are in jail or being sought.
Remember, we carry our guns to defend ourselves, our family, and our property, not so that we can shoot people.
OF course they are for SD, but I don't think people intended for your brother to shoot someone. Just going by the story so far, he may not have done the right thing or he may have. Still lacking confirmation on details to know for sure. Just glad it ended well.
I guess the main concern is the idea that someone might get from wrong information or lack of information in a story like this. I wouldn't want someone to think he should have fired warning shots, should have fired at the robbers, or even drawn his weapon to begin with.
That is what makes this statement a good one:
What the OP's brother did apparently worked. Maybe it wouldn't work in all situations. Maybe the OP's brother sensed something in the attackers that indicated hesitance on their part once the gun was pulled and fired? Who knows, I wasn't there.
IMO most of us are going by the details we read in the beginning leading some to believe mistakes were made. If they were in fact warning shots at someone pointing a gun in his direction it was a mistake but he would know it and not make it again. If the gun was not pointed in a direction then it is subject to interpretation of an event that we were not present. His decision either way.
Due to the need to protect information and your innocent brother, there is no need to pry into things that need to remain sealed until his lawyer states otherwise.
Once again, Glad it ended well.