John McQueary, the father of a then-graduate assistant who says he witnessed a rape, also took the stand Wednesday.
"I knew there was something wrong," the elder McQueary said, describing a phone conversation with his son after the alleged incident.
"I said, 'What's the matter?' " McQueary recalled. His son, Mike, then told him: 'Coach Sandusky (was) in the shower with a young boy,' " he testified.
The former coach "was positioned behind the young man, and I believe he said up against the shower wall," the elder McQueary said. "He said, 'It didn't take a rocket scientist to figure out what was going on.' "