Distribution Prep Air Force Senior Airman Marcus Dufour, left, an air traffic control apprentice assigned to the 509th Bombardment Wing, distributes COVID-19 vaccines to vaccinators at a vaccination center at the Minnesota State Fairgrounds in St. Paul, Minn., May 11, 2021. The vaccination center is operational and offering free COVID-19 vaccines to St. Paul residents. SHARE: Download: Full Size (0.82 MB) Tags: Coronavirus, covid19vaccine Credit: Army Spc. Hunter Garcia VIRIN: 210511-A-NG416-0053.JPG Photo Gallery