The NYPD plans to release harmless, colorless gas in 5 boroughs and 21 subway lines. In a test of the NYC subway airflow. They want to know how gas would travel in the case of a terrorist attack using some sort of chemical warfare using the subway as the agent that spreads their attack through the city. This is scary stuff, yet they say MTA customers are advised to stay calm. I can’t be the only one who isn’t thrilled with this idea, however the test is scheduled from 8 AM to 8 PM July 1-30 as part of the Subway-Surface Air Flow Exchange experiment (S-SAFE). For more on the S-SAFE experiment hit the jump!