Veterans appear to be getting vaccinated at higher rates than their civilian counterparts.1 Decades ago, the Armed Forces Epidemiological Board assembled teams of the necessary military and nonmilitary medical researchers who developed vaccines against pneumonia and influenza.2 During the COVID-19 pandemic, the military’s contributions to society have been a different kind. The closed medical system of the VHA, with its millions of patients and its gold mine in health data, provided answers to questions about vaccine efficacy, attitudes regarding vaccines, combining or not combining boosters, and more.