Oliver says the gunman was "tough to get to know."
Oliver: "I can't remember him having friends."
This is phase 2 - the mitigating evidence phase - of the sentencing hearing.
Oliver: "I don't have any further recollection of him after that freshman year."
Jury question: "Do you recall whether there were any presentations in your class and the gunman's performance?"
Oliver: "They were not mandatory... I do not remember [him] making a presentation."
Jury question: Did he seem anxious around other students?
Oliver: He seemed stand-offish or uncomfortable.
Defense wants to get through 7 more witnesses today.