Leslie S. Zun, M.D., M.B.A. is the medical director, Lake County Health Department/Community Health Center in Lake County Illinois and Chairman & Professor, Department of Emergency Medicine with a secondary appointment in the Department of Psychiatry at the Rosalind Franklin University of Medicine and Science/Chicago Medical School in North Chicago, Illinois. His responsibilities at the medical school include clinical research management and faculty development. His background includes a medical degree (M.D.) from Rush Medical College and a business degree (M.B.A.) from Northwestern University’s School of Management. He has presented his research and lectured on behavioral emergencies topics both nationally and internationally. He is past President of the American Association for Emergency Psychiatry and prior board member of American Academy of Emergency Medicine. He is the chief editor of the Behavioral Emergencies for Healthcare Providers textbook and course director for the past nine years for the National Update on Behavioral Emergencies conference.