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721 CES Group Photo
CHEYENNE MOUNTAIN AIR FORCE STATION, Colo. - The 721st Civil Engineer Squadron stands in front of the Cheyenne Mountain Air Force Station tunnel entrance in Colorado Springs, Colorado, Aug. 15, 2018. 721 CES operates and maintains all facilities and utility systems, valued at more than $4 billion in replacement value, to sustain the Integrated Tactical Warning and Attack Assessment weapon system. (U.S. Air Force photo illustration by Robb Lingley)

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Photo by: U.S. Air Force Steve Kotecki |  VIRIN: 180815-F-RJ223-0001.JPG

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