Most Common EMD Determinants Associated with Downgrade of ALS Incident to BLS Transports Include Critical Dispatches in a High-Volume Two-Tier EMS SystemRoger M. Stone, MD, MS, T. A. Burns, MS, NRP, R. Furst, AA NRP, and A. Butsch, MA, NRPOct 12, 2020|Research PostersDownload PDF Topicsdowngrade ALS incidentMontgomery County Fire Rescue Service