Nurses assigned to Travis Air Force Base, Calif., work side-by-side with the medical staff at Dameron Hospital, Stockton Calif., Dec. 31, 2020, in support of the continued Department of Defense COVID-19 response operations. U.S. Northern Command, through U.S. Army North, remains committed to providing flexible U.S. Department of Defense support to the whole-of-America COVID-19 response. (U.S. Army Photo by Staff Sgt. Marcus Butler / 5th Mobile Public Affairs Detachment)