Master Sgt. Timothy Tichawa, 821st Air Base Group member, placed a 12th Space Warning Squadron patch on the Air Force Chief of Staff General David Goldfein’s uniform during a site visit to Thule Air Base, Greenland, July 20, 2019. The squadron is one of three Ballistic Missile Early Warning System radar stations which collectively track satellites, missiles and other objects moving in the airspace above the North Pole. (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-IT949-1026.JPG