Guy has asked Rao to explain "blunt force trauma" to the jury.
[Updated at 2:04 p.m. ET]
Rao is explaining the field of forensic pathologist to the jury. She is also explaining her work experience and education.
[Updated at 2:02 p.m. ET]
Prosecutor John Guy has called chief medical examiner for Duval County, Florida Dr. Valerie Rao to the stand. Rao was brought on to the case some time after incident. She did not conduct Martin's autopsy.
[Updated at 1:59 p.m. ET]
Zimmerman told Hannity he felt that the media had rushed to a judgment about what happened the night of the shooting.
[Updated at 1:57 p.m. ET]
Zimmerman said he was terrified the police would show up and see his firearm and shoot him.
[Updated at 1:54 p.m. ET]
Hannity asked Zimmerman if there was anything he regrets from the night of the shooting.
"No sir," replied Zimmerman.
[Updated at 1:51 p.m. ET]
"After he couldn't his head on the concrete anymore, he tried to suffocate me. He continued to push his hands over my mouth, and my nose. It was particularly excruciating having broken nose, and him putting his weight on it. That's the point in time when he started telling me to 'shut up, shut up.'" said Zimmerman.
[Updated at 1:48 p.m. ET]
Zimmerman said Martin may have punched him a dozen times, and he became scared for his life when Martin was slamming his head into the concrete.
[Updated at 1:46 p.m. ET]
Zimmerman said he never went more than a 100 feet from his car the night of the shooting. He said when Martin surprised him he tried to call 911, but Martin punched him. His story sounds very similar to the version of events he told police.
[Updated at 1:43 p.m. ET]
Hannity asked if Martin was running away from him because he didn't know who he was.
"He wasn't running out of fear," said Zimmerman.
Hannity asked, "You can tell the difference?"
"He wasn't running," said Zimmerman.
Hannity makes the point that Zimmerman told the police dispatcher that he thought the teenager was running.
[Updated at 1:41 p.m. ET]