Training realistically to respond to the threat of radiological terrorism is a real problem. Using actual radiological materials to train federal, state, and local agencies who detect and respond to these threats is extremely expensive, adds risk, and can’t replicate many of the scenarios of concern. LLNL’s Radiation Field Training Simulator (RaFTS) is a programmable device that injects realistic radiation source signals into suitably adapted operational radiation detection and identification devices (spectrometers). RaFTS enables highly realistic scenarios to simulate truly hazardous situations but without the need, expense or risks of using actual radiological material. In 2020, RaFTS was licensed by Argon Electronics Ltd (UK) to add significant capability to their line of CBRN hazard simulators.