The Domestic Nuclear Detection Office (DNDO) has issued a Request for Information on human portable spectroscopic radiological/nuclear detection and identification systems. Human Portable Tripwire systems will be worn by operators as standard equipment provide a passive capability for constant, non-deliberate scans to increase the operator’s ability to detect and or identify radiological and nuclear material. The systems must also provide a warning to the operator of potentially harmful levels of radiation. Sol. No. DNDOHPT. Respond by Dec. 18. Contact: Rhonda Trent, contracting officer, 202-254-7032, [email protected].