Exclusive: NY Rail Plot Details Based on 'Reliable' FBI Source

Uniformed police officers have flooded New York City's Penn Station, home to the Long Island Rail Road, following a warning from the FBI of a "plausible but unsubstantiated" threat of a terrorist bomb attack against the system during the holidays. Law enforcement officials tell ABCNews.com, the plot involved a "Madrid-like attack," a reference to the synchronized bombing of the commuter rail system in Spain in March 2004 that killed 191 people. Click here to read the full FBI warning. A...Full Story