Prep Work Army Sgt. Morgan Evans, a combat medic specialist, prepares a dose of the Pfizer-BioNTech COVID-19 vaccine at Fort Carson, Colo., Sept. 1, 2021. The vaccination site provides initial doses of the Pfizer-BioNTech vaccine to soldiers and second doses of the Moderna vaccine for those completing their series. SHARE: Download: Full Size (4.7 MB) Tags: Health, Army, Coronavirus, covid19vaccine Credit: Jeanine Mezei VIRIN: 210901-A-DF599-1002.JPG Photo Gallery