A humorous patch hangs on the backpack of a space operator Dec. 11, 2017 at Thule Air Base, Greenland. The base is the most northern located base in the United States military, and is charged with the mission of missile warning, space surveillance and satellite command and control. ( Air Force photo by Tech. Sgt. David Salanitri)

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Photo credit: © AB Forces News Collection / Alamy / Afripics
License: Licensed
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Keywords: afspc, air, crisswell, force, grant, greenland, pepper, radar, raymond, space, thule