Killing comes in degrees of intimacy. At one extreme there is the example of Freddie Oversteegen, a hero of the Dutch resistance, who as a 14-year-old-girl used to pick up German soldiers and collaborators in bars, lure them into the woods, and once in a secluded spot shoot them dead. Long after the war, she told an interviewer that when seeing a man she had just shot fall, "you want to help them to get up". At the far extreme, perhaps, were the crew of Enola Gay, who killed 80,000 civilians with one bomb, dropped on Hiroshima from miles above. Drone pilots are even safer and further from their victims than high-altitude bombers.