A participants in a counter-terrorism training, center, looks for radioactive material with a handheld device south of the Verrezano-Narrows Bridge during a drill in New York, Thursday, April 7, 2011. (credit: Seth Wenig/AP)

Last Day For NYPD Lead ‘Dirty Bomb’ Exercise

On Saturday from 11 until 3 p.m. there will be police activity in New York, New Jersey and Connecticut. It includes a total of 18 vehicle chokepoints in the city’s boroughs. Most are bridges.