Airmen assigned to the 100th Air Refueling Wing, RAF Mildenhall, England, review a pre-flight checklist prior to refueling training in support of Exercise Baltic Operations, at RAF Mildenhall, England, June 19, 2019. The BALTOPS Exercise is the premier annual maritime-focused exercise in the Baltic Region. (U.S. Air Force photo by Senior Airman Alexandria Lee)

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Photo by: Senior Airman Alexandria Lee |  VIRIN: 190619-F-XW046-0128.JPG