CHINHAE, Republic of Korea (Feb. 5, 2021) Sgt. Seungwan Ha administers the second dose of the COVID-19 vaccine to Cmdr. Daniel Elliott at Navy Branch Health Clinic Chinhae. Soldiers assigned to the 549th Medical Hospital Center, 65th Medical Brigade administered the second dose of the COVID-19 vaccine, on a completely voluntary basis, to Sailors who were identified as front line personnel by their commands. (U.S. Navy photo by Mass Communication Specialist 2nd Class Michael Chen)