Less than a month after the September 11th attacks, a tiny, CIA-controlled Predator drone flew over Kandahar, searching out the home of the Taliban supreme commander Mullah Mohammed Omar. A lack of understanding of the drone's capabilities combined with a messy chain of command allowed Omar to escape, but the strike on a nearby convoy vehicle became the Predator's first lethal action. Since then, the use of armed drones has become the dominant American...