VALLEY STREAM - Police and K-9 units swarmed Sunrise Highway near Green Acres Mall in Valley Stream today as part of a five-day "dirty bomb" terror drill that began Tuesday in New York City.

The drill is used to test the response to a terror attack.

In today's drill scenario, Nassau police received intelligence from the joint terror task force that terrorists are trying to move radiological material through the county into New York City. The goal is to stop those materials that would be used to make a "dirty bomb."

Police set up a checkpoint on Sunrise Highway to conduct a radiological detection inspection of every vehicle. If radiation levels were found, officers pulled the vehicle over.

The exercises, which involve hundreds of law enforcement officials, will be held on trains, waterways and highways. All of the agencies involved will be in constant communication with each other.

"It's all about preparedness," says County Executive Ed Mangano (R-Nassau).

The drill will continue tomorrow and Saturday.

Officials to move 'dirty bomb' terror drill to LI