Stuart Levine was cordial - but had little to say - as he left the federal building.
On the 12th floor, after leaving court, he told a reporter seeking a comment, "I can't now, sir. So sorry."
Then, after walking out the door, Levine was asked on the sidewalk if he thought his testimony went well.
"I'm not an expert in that," he said. "I can't comment."
Before Levine left, prosecutors on re-direct spent about 20 minutes re-asking Levine about statements he made on telephone calls the FBI was secretly recording in 2003 and 2004.
They appeared to be trying to show jurors that Levine was implicating himself and Rezko in crimes without any motivation to cooperate with authorities.