Imagine if that guy who tried to shoot trump, actually used a drone. I don’t know how these things work, but I assume they have more than 1 missile per drone. So then imagine he just opened fire on a large scale crowd.
And because it’s a drone, he could be like 2 miles away. With the right escape plan, he could have been in Mexico long before anyone ever traced it back to him.
From Mexico, he could move pretty much anywhere with an alias.
He could have committed a large scale terrorist attack, AND gotten away with it. At least for a while. I mean, even Bin Laden EVENTUALLY was found.