After a mass shooting on a New York City subway train, the city explores a high-tech idea: deploy scanners that can spot someone carrying a gun into the transit system before they have a chance to use it. (June 3)
After a mass shooting on a New York City subway train, the city explores a high-tech idea: deploy scanners that can spot someone carrying a gun into the transit system before they have a chance to use it. (June 3)