A ShotSpotter system could of acoustically trianglated the firing location within seconds. A handful of counter snipers could of poured automatic fire onto that spot in less than 60 seconds.
The thing is this guy had a pilots license and his own airplane. The results could of been worse if he had gone kamikaze.
Absolutely. In my post #32 above I did not mention sound detection but that would be part of the system.
Re the shoter's on another forum some one posted a list of owners of the aircraft. The first owner was Volant LLC, a supplier of services to the US intelligence community. You Hotta know that the conspiracy theorists will seize on that.