It's not that surprising of an accomplishment if you have it target everyone. Gross location movement is available using stuff like GPS and is commonly found in

It's not that surprising of an accomplishment if you have it target everyone. Gross location movement is available using stuff like GPS and is commonly found in higher end commercial drones. Fine movement for just track and kill movement is not hard with object detection functionality common in security cameras and stuff. You could install any weapon on a drone of suffience size. Technically, I would assume the most powerful that could be fitted to almost any size drone to be biological agents that could be spread over crowds.