Drones have become such an accepted aspect of modern warfare that in the past decade or so, nearly every major action franchise has used them as a raising-the-stakes shortcut. They’ve fallen into the hands of various villains in dystopian futures, like Neill Blomkamp’s Chappie and Furious 7, and in all three films of Gerard Butler’s Olympus Has Fallen series. In Hollywood’s imagination, terrorists really love mechanized weaponry. But in reality, the use of drones — or, in official terminology, “unmanned aerial vehicles” — in the American military has grown exponentially, in particular during President Obama’s tenure in office. The principles of killing people while stationed at a desk halfway around the world have been mulled over in feature films (2015’s