Check out VitalTag which is an innovation coming out of the Pacific Northwest National Lab (PNNL).
VitalTag was developed as part of a broad Department of Homeland Security Science and Technology Directorate program called the Responder Technology Alliance (RTA). PNNL manages to advance the development of emerging technologies critical to the responder community. "First responders told us they need a device to continuously monitor patients in demanding environmental conditions," said Grant Tietje, a former first responder who manages RTA at PNNL. VitalTag provides a wearable, cost-effective health monitoring solution.
Grant has had a wide varied career. He spent time in law enforcement, Seattle Emergency Management, and now working at PNNL on new technologies for first responders.