PORTSMOUTH, Va. (Jan. 5, 2021) Capt. Daniel Prochazka, from Woodbridge, Virginia, executive officer of the Nimitz-class aircraft carrier USS Harry S. Truman (CVN 75), receives a COVID-19 vaccination at Naval Medical Center Portsmouth. Harry S. Truman is currently in Norfolk Naval Shipyard for its extended carrier incremental availability period. (U.S. Navy photo by Mass Communication Specialist Seaman Tyler Bergstrom)