The scariest, science-fiction-coming-to-pass quote from this article: "in the future, these cheap, highly available tool/toys turned into weapons will be used

The scariest, science-fiction-coming-to-pass quote from this article: "in the future, these cheap, highly available tool/toys turned into weapons will be used in greater numbers and, eventually, will feature autonomous flight coordination, also known as swarm technology." Just picture a swarm of 50 or 100 drones suddenly emerging over a building and coming at you (or your tank) like a flock of killer bees. Note that they would NOT need conventional radio control from an observer station -- the kind of radio that currently you try to jam in order to disable a drone. All they need is to communicate between themselves, which could be done in a variety of ways, even optical (blinking IR light on the leader, etc). This level of swarm AI could be implemented in a RPi right now.