This morning the NYPD infested 200 NYC subway stations with an invisible odorless gas for a test to see how air flows within the subway system. This was put into place to help emergency responders in the event that a real airborne toxic event were to occur. Hit the jump for the full story..
The gas being dispensed in small amounts is Perfluorocarbon tracers and is being tracked by meters installed in selected stations. Scientists will make a “plume model” of how the gas moves through the subway system. This information will in turn be used by first responders if there ever is an attack.