StingRay: Spy Devices Which Track Cellphones, Intercept Calls Found All Over D.C., Md., Va. – NBC4 Washington

https://www.nbcwashington.com/investigations/Potential-Spy-Devices-Which-Track-Cellphones-Intercept-Calls-Found-All-Over-DC-Md-Va-482970231.html

https://www.nbcwashington.com/news/local/Potential-Spy-Devices-Which-Track-Phones-Found-All-Over-DMV_Washington-DC-483034021.html