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Team prepares for Guardian Challenge
VANDENEBERG AIR FORCE BASE, Calif. – Preparing to compete in the Guardian Challenge, 1st Lt. David Shaffer, the 30th Operations Group team range operations commander, works in some extra practice before the competition begins here Friday, April 9, 2010. Guardian Challenge is an Air Force Space Command competition, held every other year between March and May, featuring teams from 10 AFSPC wings. (U.S. Air Force photo/Senior Airman Andrew Satran)

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