Running through 2013
MCGHEE TYSON AIR NATIONAL GUARD BASE, Tenn. - Students attending the Noncommissioned Officer Academy Class 13-7 participate in group human performance physical training at the I.G. Brown Training and Education Center here, July 24, 2013. (U.S. Air National Guard photo by Master Sgt. Kurt Skoglund/Released)

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Photo by: Master Sgt. Kurt SkoglundReleased |  VIRIN: 130724-Z-II695-006.JPG