U.S. Air Force Staff. Sgt. Bradley Borytsky, 51st Operational Medical Readiness Squadron mental health technician, demonstrates to Staff Sgt. Aaron Wynn, 51st Medical Support Squadron NCO in charge of the medical equipment office, how to properly swab his nose for an antigen test at Osan Air Base, Republic of Korea, Jan. 7, 2022. Each nostril should be swabbed for 15 seconds to ensure an adequate sample is collected to best achieve accurate test results. (U.S. Air Force photo by Airman 1st Class Megan Estrada)
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