Weaponised hawks have many interesting properties. They don't emit radio waves, and not much infrared either, so are hard to locate and shoot down. They can l

Weaponised hawks have many interesting properties. They don't emit radio waves, and not much infrared either, so are hard to locate and shoot down. They can loiter forever (well, limited by hawk's lifetime, whatever it is), are self-refueling, and, to some extent, also self-repairing and self-replicating.