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McQueary testifies he saw Sandusky abuse boy

03:04

Former Penn State offensive coach Mike McQueary was a graduate assistant more than 10 years ago when he says he walked into a school locker room and witnessed Jerry Sandusky in the shower with a young boy. He recalled the incident during the third day of Sandusky’s sex abuse trial, telling the jury he was “shocked.” NBC’s Mike Isikoff reports.