NYC's Simulated Toxic Gas Attack Begins Today

This morning, the NYPD flooded the New York subway system with an odorless, invisible gas. The simulated terror attack is part of a three-day test that will generate a map of how air flows through the subways, helping emergency responders if a real airborne toxic event ever occurs. » 7/09/13 11:57am 7/09/13 11:57am