“The US Air Force on Tuesday rolled out its 20-year flight plan for small, unmanned aerial systems (UAS). The Air Force has long discussed using swarms of miniaturized drones for attack and surveillance missions, but as its adversaries build more sophisticated weapons to counter traditional platforms, the service is responding with a new strategy to field tiny, flying bots to take down enemy defenses.”
Source: How Swarming Drones Could Change the Face of Air Warfare