Members of law enforcement demonstrate an Evolv weapons detection during a press conference announcing weapons detectors for the New York City subway system in the Fulton Transit Center March 28 ...

Over the summer, the city tested new gun detector scanners at around 20 subway stations. According to the NYPD, out of the 2,700 scans, no guns were detected, but twelve knives were flagged.

Following two gun incidents at elementary and middle schools, a Palm Beach County School Board member proposed installing metal detectors. Other board members expressed concerns about the cost and ...