[Travis McGee]

The USSS has the best tech available for locating the source of a bullet in real time. That's my guess.

[Grampa Dave]

Our city bought some of that locate where the shot was fired tech when there was so vicious gang fights between to two gangs of illegal aliens a couple of years ago.

The sensing equipment is mounted on the top a squad car for detecting the first shot. If a second shot is fire, the location is determined to the point that car and other cars can be on that spot or covering exits from that spot in a minute or so.

It apparently worked very well as some large scale arrests were made after this equipment was purchased and installed on the cop car and the computing equipment in Police headquarters.