Starting in Los Angeles, Body Scanners Come to Subways and Buses
https://www.nytimes.com/2018/08/15/...y-scanners.html

NYPD Debuts New Scanners as City Marks Year Since Subway Bomb Attempt
https://www.ny1.com/nyc/all-borough...subway-scanners

LA 和 NY 都要加強臨檢了。