D. A. Henderson, MD was professor of medicine and public health at the University of Pittsburgh and a distinguished scholar at the Center for Biosecurity in Baltimore, as well as former dean of the Johns Hopkins School of Public Health. He served as Life Sciences Adviser to President G. H. W. Bush and was the first director of the newly created Office of Public Health Emergency Preparedness in the Department of Health and Human Services. He is the recipient of the Presidential Medal of Freedom and the National Medal of Science plus many other awards. He has received the Japan Prize and has been knighted by the King of Thailand.