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Thule celebrates Police Week with Defender's Challenge
THULE AIR BASE, Greenland – 821st Security Forces Squadron defenders carry ammo cans as part of a ruck sack march for the Defender’s Challenge at Thule Air Base, Greenland, May 18, 2016. 821st SFS defenders participated in the challenge as part of Police Week. (U.S. Air Force photo by Tech. Sgt. Gary Chickery)

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Photo by: Tech. Sgt. Gary Chickery |  VIRIN: 160518-F-ABCDE-066.JPG

Peterson SFB Schriever SFBCheyenne Mountain SFSThule AB New Boston SFS Kaena Point SFS Maui