Airmen learn about the Moderna COVID-19 vaccine before entering the pre-screening area at Little Rock Air Force Base, Arkansas, Feb. 5, 2021. The 19th Medical Group executed their second mass vaccination effort, providing 329 Team Little Rock members their first dose of the Moderna COVID-19 vaccine within 24 hours of its arrival on station. (U.S. Air Force photo by Airman 1st Class Mariam K. Springs)