Reporting with Natasha Korecki

The defense just played its own tape referencing a Chicago Tribune article printed on Dec. 5, 2008 that said Rod Blagojevich's friend John Wyma was cooperating with a federal investigation.

The call takes place right after Blagojevich gets off a late night Dec. 4 phone call with his spokesman Lucio Guerrero. In the call played by the defense, Blagojevich says he was still reeling from finding out Wyma was cooperating with the government.

"It was startling and shocking, and there's all kinds of emotions that go through your mind when you think about a friend that might have been doing that, not to mention it's frightening and terrifying," Blagojevich said.

Finding out about the Tribune article helped Blagojevich recall an October meeting where he remembered Wyma "seemed weird." That day, a Tribune reporter was also outside his office.

"My mind began to reconstruct that day with this particular reporter and John Wyma," Blagojevich testifies.

He said he called his counsel Bill Quinlan.

"My god, what could I have said?" Blagojevich said went through his mind. "Do you think I said something wrong? Could I have stumbled into crossing a line?"