1. Department of Emergency Medicine, Division of Prehospital and Disaster Medicine, UMMS-Baystate, Springfield, MA (AZ);; Department of Emergency Medicine, Oregon Health & Science University, Portland, OR (MRN);; Department of Emergency Medicine, Division of EMS, University of Texas Southwestern Medical Center, Dallas, TX (ANH);; Department of Emergency Medicine, University of Cincinnati, Cincinnati, OH (US);; Department of Emergency Medicine, Division of EMS, University of Cincinnati, Cincinnati, OH (JM).