AMAL MATTU, MD, Professor and Vice Chair of Academic Affairs, Department of Emergency Medicine, University of Maryland School of Medicine, Baltimore, Maryland, USA. WILLIAM J. BRADY, MD, Professor, Vice Chair for Faculty Affairs, and David A. Harrison Distinguished Educator, Department of Emergency Medicine University of School of Medicine, Charlottesville, Virginia, USA; Medical Director, Albemarle County Fire Rescue, Charlottesville, Virginia, USA.