The Autonomous Radiation Monitoring Systems system is a low altitude aerial radiation detection device. Integrating lightweight galla spectrometers with an unmanned aerial vehicle it allows the operator to accurately asses a radiological hazard at a remote safe distance, providing real-time information on the source isotopes, intensity and location of the radiation. This uses a similar platform as Project Riser (hexacopter) but is for outdoor use. Here they're looking at flying low and slow and with great accuracy to produce highly accurate maps of radiation levels (you can't get accuracy with current high level and fast drones).