The Buster density meter/contraband detector is considered by many to be the "golden standard" in drug interdiction equipment and contraband detection. Contraband detection requirements have changed over the years. In the past, law enforcement was concerned with would-be smugglers transporting drugs or alcohol across state lines. These days, however, there are other threats for which to be concerned. Because of these new threats, the Buster density meter/contraband detector has the new "Rad-Aware" Radiation Safety Feature added! The Buster can be used to detect hidden radioactive materials such as dirty bombs, or to establish a safe perimeter for first responders to potential terrorist events.