Master Sgt. Jevon King, 365th Airlift Squadron first sergeant, receives his annual flu shot from Senior Airman Mariah Moreno, 433rd Medical Squadron aerospace medical service technician, at Joint Base San Antonio-Lackland, Texas, on Nov. 6, 2021. According to the Centers for Disease Control, seasonal flu vaccines are designed to protect against the influenza viruses that research indicates will be most common during the upcoming season. (U.S. Air Force photo by Staff Sgt. Monet Villacorte)

Capt. Albert Scott Jr., 433rd Medical Squadron critical care nurse, administers a vaccine to a Reserve Citizen Airman Nov. 6, 2021 at a mass vaccination event at Joint Base San Antonio-Lackland, Texas. These vaccination clinics are designed to help reduce illness and lost work time. (U.S. Air Force photo by Staff Sgt. Monet Villacorte)