CAMP FOSTER, Okinawa (March 1, 2021) A U.S. Marine with Marine Rotational Force - Darwin, receives the second COVID-19 vaccine at Okinawa Naval Hospital, Camp Foster, Okinawa, Japan, March 1, 2021. U.S. Marines attached to MRF-D who opted to receive the first COVID-19 vaccine attended a follow-on vaccination event to receive their second shot in preparation to depart to Australia. (U.S. Marine Corps photo by Sgt. Micha Pierce)