India's metros are the battlegrounds for terrorists.  Terrorist attacks in any metro can cripple economy, force politicians to respond to the demands of terrorists, and provide media publicity. Kill one in a metro and you can scare a million. New York's Mayor Michael Bloomberg, once said:

            "When you catch a terrorist and look at the map in his or her pocket,

            It is always a map of New York; it's not a map of some other place."