Obeying the laws of “movie” security

In a response to the London bombings, New York officials have turned off cell phones in the subways. I’m guessing that this means there is no coverage. The one stupid thing about this all. If I’m not mistaken, the bombs in London were “cell phone” triggered, but they were tied into the alarm function and not a call trigger. Strangely enough, I just don’t see terror cells relying on something as unreliable as a cellular call to trigger something. They might be evil, and terror cells, but they’re not stupid. Communication uses outweight evil uses. Then again, Bruce also also mentioned that before.
Via BruceSchneier