CSAF visits Greenland
The 21st Air Force Chief of Staff David Goldfein, signs the 821st Security Forces Squadron’s Defender wall during his visit to Thule Air Base, Greenland July 20, 2019. Thule AB was the last stop of a 10-day visit with allies and partners in Europe including Estonia, Finland, United Kingdom, Germany and Greenland. (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-IT949-1099.JPG