DC Launches Mass Transit Terror Drill

Commuters at one of Washington Metro's busiest stations are being met today by dozens of transit police officers and bomb specialists as part of the system's biggest-ever security drill. "There is no immediate or credible threat" to the Metro, a spokeswoman tells the Washington Post. "We want to stay a step ahead."

Today's operation will be followed by a series of drills in the coming weeks simulating mass-casualty attacks like the one on the London Underground in 2005 and in Mumbai in 2008. The Metro's newly beefed-up security teams include a 20-member anti-terrorism unit formed in January that conducts random patrols. "We want to be unpredictable and keep people off guard," said a transit police chief. (More mass transit stories.)