1. D. A. Henderson, MD, MPH, is a Distinguished Scholar; Brooke Courtney, JD, MPH, is an Associate; Thomas V. Inglesby, MD, is Deputy Director and Chief Operating Officer; Eric Toner, MD, is a Senior Associate; and Jennifer B. Nuzzo, SM, is an Associate; all are at the Center for Biosecurity of the University of Pittsburgh Medical Center (UPMC), Baltimore, Maryland.