Since January,Police have been using technology developed during Iraq conflict, Baltimore implements mass surveillance without public knowledge or consent.
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.
A company called Persistent Surveillance Systems, based in Dayton, Ohio, provided the service to the police, and the funding came from a private donor. No public disclosure of the program had ever been made.