Chief Master Sgt. David Duncan, 319th Air Base Wing command chief, uses a pair of visual aids to illustrate his talk on leadership at the 319th Medical Group on Grand Forks Air Force Base, N.D., Feb. 24, 2014. Among the leadership qualities Duncan spoke about were integrity and the necessity for leaders to believe in their subordinates, even if that means giving them negative feedback. (U.S. Air Force photo/Staff Sgt. David Dobrydney)
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