Dr. Manguso: "No test is foolproof."
When Dr. Manguso asked if the gunman had a mission, he said no.
He also denied have thoughts put in his head.
There's the question everyone was waiting for!
Dr. Manguso met with the gunman for 6 hours and 15 minutes in August 2013.
The defense wants to play video that has to do with the gunman's arrest for the remainder of today.
The 4-hour video is the gunman sitting alone in a room.
The 2-hour video includes the head-ramming incident in November 2012.