Do they have metal detectors on the subway?
No, once you go throw the turnstile (which looks like a metal detector), that's that. But when you look suspicious, someone is going to do something. When you see something, do something. 617-222-1212. The Homeland Security wants the public to be safe and advise the people to be the metal detectors at an airport. As said, there are uniformed officers and undercovers. They look like a regular person riding the T.