The sharing of strategies and technologies demonstrates the influence of intelligence agencies and the military on domestic law enforcement practices since the Sept. 11, 2001 attacks.
The planes used by the US Marshals Service — under the Department of Justice — fly from five cities with a flight range covering nearly the entire US.
The aspect of the technology which most troubles civil liberties advocates that it uses a dragnet approach to collection — picking up not just a suspect’s cell phone, but the information of potentially thousands of unrelated cell phone users in the same area. The devices can not only identify a cell signal but can, with a court order, intercept a phone’s communications.
via CIA Gave Cops Secret Technology to Spy on Cell Phones / Sputnik International.