The US Defense Secretary Pete Hegseth’s decision to make the annual flu vaccine optional for US military service members in April 2026 was not an exercise in “medical autonomy,” as he called it at the time. It was a recklessly ideological act that has now already cost a life. By lifting a long-standing, evidence-based mandate Hegseth dismissed as “absurd” and “overreaching,” he prioritized ill-advised principles over the health, welfare, and readiness of US service members.