U.S. Airmen board a bus to travel from the influenza vaccine point of distribution in a hangar Jan. 14, 2021, at Travis Air Force Base, California. The POD is an organized way of efficiently distributing a vaccine to a large amount of people and preparing medical personnel for future large-scale distributions such as the COVID-19 Vaccine. (U.S. Air Force photo by Airman 1st Class Alexander Merchak)