Shortly after 9/11 when I first became aware of combat drones (then mostly light RC aircraft firing missiles, usually at the weddings/funerals of the families of supposed enemies of the United States) I had the one obvious thought:
"This Is Fine™ but what happens when the supposed enemies of the United States start DRONING BACK? When tiny drones swarm & shoot bullets at the heads of important personages from six inches away? How will we like it? We will not like it."
I still have this thought.