Senior Airman Christopher Spencer, 21st Operational Medical Readiness Squadron flight medic, prepares a syringe with the Moderna COVID-19 vaccine at the Peterson Fitness Center, Jan. 6, 2021. The medical group is reaching out to base personnel using a phased approach to ensure first responders, our critical national capabilities, deploying members, and mission-essential personnel are the first to receive the vaccine. (U.S. Space Force photo by Airman Kaitlin Castillo)