An airplane’s range is limited primarily by the amount of fuel it can carry. Aerial refueling, the simultaneously mundane and challenging act of refilling a plane’s fuel in the middle of the sky, makes it possible for planes to fly much farther than they can on a single tank, hitting targets in places normally out of reach. There’s just one major hitch: the refueling, right now, is best done over a friendly sky, because tankers and the planes hanging around them make for tempting targets. But what if that wasn’t the case. What if, instead, the tankers themselves were as stealth as the planes they’re refueling?