While the controversial (and deadly) use of combat drones certainly shows no signs of abatement, the Air Force has announced that a recent purchase of 268 Predators will be its last. The vehicles, manufactured by General Atomics, should be in the hands of the military by early next year. For its part, the USAF will apparently switch to purchasing Reaper drones -- which can carry a wide variety of armaments, including Sidewinder or Hellfire missiles and laser-guided bombs. We just hope that they aren't using the