Radiation Isotope Identifiers: a hand-held instrument capable of detecting gamma and neutron emissions from radioactive sources, including nuclear, medical and industrial isotopes. CBP officers use this device to determine the exact identity of a radioactive source causing an alarm. More than 550 are in use with more on order.
Large-scale Gamma-ray/X-ray Imaging Systems: produce transmission and reflected images of the contents of a cargo container, rail car, vehicle or trailer-truck. CBP officers analyze these images to determine where there are anomalies.
US Customs and Border Protection