"The Department of Homeland Security (DHS) recently completed the first round of the evaluation of radiation detection instruments to be used by emergency responders and others involved in the prevention, detection, mitigation and recovery from potential radiological or nuclear events. The purpose of this testing was to determine the performance capabilities of equipment against criteria set out in existing American National Standards Institute (ANSI) standards. Testing against performance capability specifications is a necessary step towards ensuring that emergency responders and other homeland security personnel will be equipped with the best available technology to alert them to the presence of radioactive materials, such as those that can be used to construct radiological dispersal devices (RDD) and improvised nuclear devices (IND)."
Office for Domestic Preparedness Information Bulletin No. 168; ODP Information Bulletin No. 168
Internet Archive: http://web.archive.org/web/20080510120130/www.ojp.usdoj.gov/odp/docs/info168.pdf