CHINHAE, Republic of Korea (Jan. 20, 2021) Sgt. Adrian Yelder administers the COVID-19 vaccine to Army Sgt. Maj. Patrick Marrill at Navy Branch Health Clinic Chinhae. Sailors from Branch Health Clinic Chinhae and Soldiers from the 549th Hospital Center, 65th Medical Brigade, administered COVID-19 vaccines, on a completely voluntary basis, to personnel identified by Department of Defense distribution guidance. (U.S. Navy photo by Mass Communication Specialist 2nd Class Michael Chen)