DAYTONA BEACH, Fla. -- Technology to detect radioactive, biological or chemical agents in the air has been acquired to help secure the Daytona International Speedway for the Daytona 500 and other races, Local 6 News has learned.

Local 6 News also learned Friday that medical personnel in Daytona Beach have received more than 400 doses of nerve agents to be used in an emergency.

Paramedics at Daytona International Speedway have the capability of innoculating more than 1,500 people in case of a chemical or biological attack, Local 6 News reported.

Speedway officials in Daytona Beach are employing some of the same resources used at the recent Super Bowl in Jacksonville, Fla.

President George W. Bush's top intelligence and military officials said Wednesday that terrorists are regrouping for possible new strikes against the United States.

Offering few specifics on terror threats, Defense Secretary Donald H. Rumsfeld told a House hearing that the government could reasonably predict attacks would come from terrorism, weapons of mass destruction and other means.

There have been no threats made in connection with the Daytona 500 this week.

Watch Local 6 News for more on this story.