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PETERSON AIR FORCE BASE, Colo. — Security Forces Airmen compete during Guardian Challenge 2010. Every two years, Air Force Space Command hosts Guardian Challenge, the premier space and cyberspace competition in the world. Teams from nine wings and one center, including newly added Air National Guard units, were part of GC 2010 competition events. Unlike GCs of the past, 2010’s competition included cyberspace forces for the first time. (U.S. Air Force photo by Duncan Wood)

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