That reminds me of a story. My co-workers husband has a freind in the FBI I think it is. Anyway, during the Olympics here in Utah, his buddy took him into a van parked outside the venue, which was straight out of the movies... computer on both sides. Sat him down with another agent, then went outside. The guy zoomed in on a satellite from just the US, up until he saw his buddy's face standing outside the van. They were using it to identify any potential threats. So its not what doesn't exist, but what you don't know about!