Maj. Gen. Patrick Hamilton, the commanding general of Texas National Guard's 36th Infantry, deployed to Camp Arifjan, Kuwait, as the commanding general of Task Force Spartan braces for his one-dose Janssen Biotech COVID-19 vaccine during the camp's March 13, 2021 rollout of Operation Med Spear. Unlike other COVID-19 vaccines, the Janssen vaccine does not have to be frozen in transit, which makes it easier to distribute to Soldiers deployed overseas. (U.S. Army photo by Staff Sgt. Neil W. McCabe)