RIJEKA, Croatia (March 30, 2021) Hospital Corpsman 2nd Class Benjamin Richardson prepares a COVID-19 vaccine during a SHOTEX aboard the Expeditionary Sea Base USS Hershel �Woody� Williams (ESB 4) in Rijeka, Croatia, March 30, 2021. Hershel �Woody� Williams is operating in U.S. 6th Fleet to conduct interoperability training and build strategic partnerships with their African partners. (U.S. Navy photo by Mass Communication Specialist 2nd Class Eric Coffer)