The NYPD Is Planning a Simulated Chemical Attack For New York Subways

A subway-borne chemical attack is one of those theoreticals that require the willful ignorance of regular passengers--for most of us, it's just better not to think about it. Not so for the NYPD, which yesterday announced a plan to test how a chemical or radiological attack would spread through the city's 200-odd miles of subway by pumping an invisible gas through the system this summer. More