Stealthy, Tiny, Deadly, Global: The Drone Revolution's Next Phase: Today's flying robotic killers only seem advanced. In many ways, the drone revolution has been stuck in the '00s, as defense companies use the same old airframes, the same old ground controllers and utilize the same old weapons. But we're starting to be able to glimpse Drone Revolution 2.0: a future in which flying robots go stealthy, fly out to sea, carry far lighter weapons, miniaturize -- and proliferate around the world.