U.S. Air Force Airman 1st Class Austin Buller, 22nd Expeditionary Air Refueling Squadron boom operator, reads technical instructions during a training flight over the Black Sea May 29, 2020. Participation in multinational exercises enhances our professional relationships and improves overall coordination with allies and partner militaries during times of crisis. (U.S. Air Force photo by Staff Sgt. Joshua Magbanua)
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