Sandusky trial: Is questioning witness credibility risky?

Jerry Sandusky
Former Penn State assistant football coach Jerry Sandusky arrives to the Centre County Courthouse before the first day of his child sex abuse trial begins on June 11, 2012, in Bellefonte, Pennsylvania. Sandusky is charged with 52 criminal counts of alleged sexual abuse of children.
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Susan Gaertner, principal at Gray Plant Mooty, joins The Daily Circuit Wednesday to talk about the defense strategy in the trial of former Penn State assistant football coach Jerry Sandusky. Is questioning witness credibility a risky move?