Milo Danger is the pseudonym of a man who posted a video to YouTube (screen grab shown) in which a civilian drone equipped with a paintball pistol flies over an open field, shooting at cutout targets with deadly accuracy. He said his purpose was to point out ethical issues that must be faced. (Milo Danger/YouTube)

Milo Danger is the pseudonym of a man who posted a video to YouTube (screen grab shown) in which a civilian drone equipped with a paintball pistol flies over an open field, shooting at cutout targets with deadly accuracy. He said his purpose was to point out ethical issues that must be faced. (Milo Danger/YouTube)