The Bureau of Alcohol, Tobacco, Firearms and Explosives concocted a plan to find out what Americans were going to gun shows by using license plate detectors to scan the license plates of cars that were in the parking lots of these events.
O Departamento de Álcool, Tabaco, Armas de Fogo e Explosivos concebeu um plano para descobrir americanos que frequentam feiras de armas, usando detectores de placas, para mapear as placas dos carros estacionados nesses eventos.