The Defense Threat Reduction Agency (DTRA) is seeking potential sources for the procurement of five Linear Radiation Monitors (LRM) as part of a sources sought notice. The monitors are required to feature 18 gamma detectors made of cesium iodide scintillators and nine helium-3 neutron detectors, with specific sensitivity and operational requirements outlined in the attached draft Specifications Sheet. These devices are critical for enhancing environmental safety and compliance in contexts requiring radiation monitoring, ensuring accurate detection for safety and security purposes. Interested companies are encouraged to submit their capabilities statements and relevant experience to Erika Hebert at erika.l.hebert2.civ@mail.mil, with responses limited to 10 pages and the subject line “Sources Sought # HDTRA125R0062.” This notice is for informational purposes only and does not constitute a solicitation or commitment by the government.