Army Reserve Sgt. Richard Liggans, a resident of Buffalo, New York, deployed to Camp Arifjan, Kuwait, with the 228th Combat Support Hospital, where he serves at the noncommission officer-in-charge of the camp's Troop Medical Clinic, loads a syringe with the Janssen Biotech COVID-19 vaccine at the camp's March 13, 2021 rollout of Operation Med Spear. Unlike other vaccines, the Janssen vaccine is administered with just one shot, not two. (U.S. Army photo by Staff Sgt. Neil W. McCabe)