Air Force Chief of Staff Gen. David Goldfein speaks 821st Air Base Group Airmen during an all call at Thule Air Base, Greenland, July 20, 2019. During the all call, Goldfein covered topics such as multi-domain operations, joint leaders and teams and the importance of squadrons in the Air Force. (U.S. Air Force photo by Staff Sgt. Alexandra M. Longfellow)

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Photo by: Staff Sgt. Alexandra M. Longfellow |  VIRIN: 190720-F-IT949-1058.JPG