? Suffolk police have a new weapon in the fight against terrorism on Long Island and beyond ? radiation detectors.

The personal radiation monitoring pagers will beep and vibrate if they detect radiation. Police Officer Dave Williams says the little pager could alert him to nuclear weapons while he patrols the highways, and that could save millions of lives on Long Island and in New York City. Officials say many terrorist plots on large cities start in surrounding suburbs.

Police are being trained to tell the difference between legal amounts of radiation, like from patients who have undergone medical treatment, and illegal amounts that could be a serious threat.

Police say most of the money for the personal radiation detectors will come from a grant from the Department of Homeland Security. Nassau County is considering purchasing detectors.