Monte Reel in Bloomberg Businessweek:
Pritchett had no idea that as he spoke, a small Cessna airplane equipped with a sophisticated array of cameras was circling Baltimore at roughly the same altitude as the massing clouds. The plane’s wide-angle cameras captured an area of roughly 30 square miles and continuously transmitted real-time images to analysts on the ground. The footage from the plane was instantly archived and stored on massive hard drives, allowing analysts to review it weeks later if necessary.
Since the beginning of the year, the Baltimore Police Department had been using the plane to investigate all sorts of crimes, from property thefts to shootings. The Cessna sometimes flew above the city for as many as 10 hours a day, and the public had no idea it was there.
The city wide panopticon that can solve crimes by rewinding time.