Airmen assigned to the 23d Medical Group help mass flu line attendees sign in before receiving their flu shots Dec. 6, 2019, at Moody Air Force Base, Ga. The 23d MDG annually hosts the mass flu line to help protect active duty Airmen against influenza. The 23d MDG vaccinated 1,476 Airmen during this year's event. (U.S. Air Force photo by Airman 1st Class Jasmine M. Barnes)