As the NYC Office of Emergency Management mentioned yesterday, there will be a "marine law enforcement exercise" taking place today between 10 a.m. and 4:00 p.m. New Yorkers were told to "Expect additional marine vessel activity south of the Verrazano-Narrows Bridge in New York Harbor." And here are a few more details. It's part of the NYPD's "Securing the Cities" initiative and WCBS 2 adds, "The goal is protect the area from a potential "dirty bomb" or nuclear device. Participants on about 17 vessels will practice checking for radioactive material" (sort of like the highway terrorism drill held in Queens back in June). Photo: wallyg on Flickr