Got this from a friend I used to work with by e-mail:

New camera systems – interesting stuff!
http://www.dump.com/nextsurveillance/

This unit achieves six inch resolution from 17,000 feet over an incredibly wide field of view. And the ability to go back in time (archived images) means you can find where a bad guy lives and who he has been with. I also have reason to believe that the resolution capabilities on individual objects is substantially greater than they let on.