A question I have is why didn't any neighbors respond to the sounds of gun shots coming from the school?

I live across the street from a elementary school. All three of my kids went there. Believe me,if I hear multiple gunshots coming from the school during a school day and see no police swarming the premises,I would be out the door in less then a minute(sound familiar?) with a rifle and a 45. I am sure all you gents would do the same.The "I don't want to get involved" mindset has to be put aside when it comes to gunfire and children.
So what about a program similar to neighborhood watch? The local police could ask for a few volunteers from the school area to just be ready if anything happens.Perhaps a few retired gents who are normally at home. The local public affairs officer could teach some classes and hold a meeting once a month.
The volunteers could use their own approved weapons and have to pass background checks. To make it worthwhile for the volunteers,the police can supply free ammo and let them use the police range for practice.Cost to taxpayer? Negligible.
The other thing that should be done is every teacher and admin person needs a panic button on their PERSON whenever they are at school. It should include a direct signal to the police dept and the school office and it should start up a very loud warning signal,that is not the same as the school bell systems. Perhaps some surplus air raid sirens could be used.
You need a different type of warning signal so that everybody knows when a serious event is occurring. This also ties into my school watch program.When you hear THAT signal,you respond!
Comments?
Bob