U.S. Airmen assigned to the 31st Medical Group give COVID-19 vaccinations at Aviano Air Base, Italy, April 23, 2021. The 31st MDG holds a vaccination line at Hangar 1 from 8 a.m. to 12:30 p.m. on Fridays to administer Moderna vaccinations to U.S. personnel. (U.S. Air Force photo by Staff Sgt. K. Tucker Owen)