Re: A bit more on that pesky drone.
A GPS unit broadcasting the drone's position might not be a good idea. Sure, you could encrypt the transmitted coordinates, but it would still be a beacon the bad guys could use, to home in on, too.
There are probably contingency plans as well, but which one you use might depend on the circumstances under which the drone is lost, which might not be clear until too late.
I think the guys who do this for a living probably have thought all this out, and they have just resigned themselves to an occasional materiel casualty and propaganda hit. That is what war is all about. At least, there wasn't a man on board.