gothamist_health_master_small.jpgThink of it as a force field for New York. The Department of Homeland Security is going to spend almost $50 million on radiation detectors that will be placed in secret locations around the City. This is in response to intelligence suggesting that Al Qaeda would like to set off a nuclear or dirty bomb in this country. The detectors will be up and running later in the year, giving terrorists a nice window of opportunity before they're operational.