In the tragedy in Dallas on July 7 (7/7/2016), a drone was used to kill one of the suspects in a sheltered area. Sure it was called a "Robot", specifically the bomb disposal robot, only this time it was carry a bomb with intent to kill. Here is another article about this. Drones that ply the skies over Iraq and Afghanistan are the same thing. Surveillance robots that were later armed with weapons. I can only see the use of Armed Domestic Robots/Drones being used in various situations, as in the Pulse Club in Orlando where the SWAT charged and shot him, but suffered a near fatality as the helmet of one officer stopped a bullet. I fully expect other agencies will now seriously consider using robots/drones in future standoffs. How soon before we see this?