1. Pediatric Medical Director, Department of Emergency Medicine, Inova Fairfax Hospital, Falls Church, Virginia.
2. Clinical Associate Professors, Department of Emergency Medicine, Inova Fairfax Hospital, Falls Church, Virginia.
3. Director, Emergency Management and Disaster Medicine, Inova Fairfax Hospital, Falls Church, Virginia.
4. Director of Academic Affairs, Department of Emergency Medicine, Inova Fairfax Hospital, Falls Church, Virginia.
5. Clinical Professor of Emergency Medicine, George Washington University, Washington, DC.
6. Clinical Professor, Department of Emergency Medicine, George Washington University and University of Virginia (Charlottesville) Schools of Medicine, and Senior Lecturing Fellow, Duke University School of Medicine, Durham, NC.