Staff Sgt. Dave Armstrong, right, spars with Santiago, 18, at a local community center in Colorado Springs, Colo., on Tuesday, April 11, 2006. Sergeant Armstrong, known to his students as Sensei Dave, teaches martial-arts classes for at-risk teens. Sergeant Armstrong is an information manager with Detachment 2 of the 17th Test Squadron at Cheyenne Mountain Air Force Station, Colo.
U.S. Air Force photo/Staff Sgt. Don Branum
November 4, 2012
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