 Now, the underground stuff usually works out pretty easy because if you're on the golf course, there's probably nothing below ground other than some sprinkler systems. You'll sweep it for bombs and things like that because people do crazy things. But outside of that, the ground part is usually reasonably easy. Unless you're in New York City where you've got subway stations, then you get a little more complicated. However, the protective bubble in the air is critical. How the hell did they not have an aerial surveillance plant?