U.S. Air Force Tech. Sgt. Brandy Halvorsen, 173rd Medical Group, administors the COVID-19 vaccine to Lt. Col. Victor Knill, 173rd Fighter Wing F-15 Instructor Pilot, February 10, 2021 at Kingsley Field in Klamath Falls, Oregon. The first doses of the vaccine arrived this week here, allowing volunteers to sign up for their initial dose. (U.S. Air National Guard photo by Senior Master Sgt. Jennifer Shirar)

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Photo by: Senior Master Sgt. Jennifer Shir |  VIRIN: 210210-Z-NV612-1004.JPG