Master Sgt. Evan Millard, 39th Medical Logistics flight chief, inventories Food and Drug Administration approved COVID-19 vaccine doses at Incirlik Air Base, Turkey, Sep. 19, 2021. To ensure the safety and readiness of the force, the Department of the Air Force, in line with the Department of Defense, has directed that all active-duty, reserve and Air National Guard Airmen and Guardians be fully vaccinated against COVID-19. (U.S. Air Force photo by Senior Airman Matthew Angulo)