FILE - In this February 9, 2021, file photo provided by the Department of Defense, Hickam 15th Medical Group hosts the first COVID-19 mass vaccination at Joint Base Pearl Harbor-Hickam.
FILE - In this Feb. 9, 2021, file photo provided by the Department of Defense, Hickam 15th Medical Group hosts the first COVID-19 mass vaccination on Joint Base Pearl Harbor-Hickam. Military service members must immediately begin to get the COVID-19 vaccine, Defense Secretary Lloyd Austin said in a memo Wednesday, Aug. 25, 2021, ordering service leaders to “impose ambitious timelines for implementation.”  (Tech. Sgt. Anthony Nelson)