Witness: Zimmerman well-versed in Florida's self-defense laws
Current military prosecutor and former law professor Alexis Carter testified Wednesday that he discussed Florida's self-defense and "Stand Your Ground" laws during a class Zimmerman took in 2010.
Carter stated that Zimmerman was one of his better students and even earned an "A" in the Seminole State College criminal procedure class.
While Zimmerman's defense attorney Mark O'Mara argued his client's school records and class history were not relevant, the State argued Carter's testimony proved Zimmerman was lying when he told Sean Hannity that he knew nothing about Florida's "Stand Your Ground" law.
To further the prosecution's belief that Zimmerman pressed the gun into Martin's chest during the altercation, firearms analyst Amy Siewert was called to testify.
While Siewert testified she could not say if the gun was pressed or pushed into Martin's chest, she did believe the muzzle of the gun was touching Martin's clothing.
Later Wednesday, the State's DNA expert testified that an examination of swabs taken from Zimmerman's gun found no DNA or blood from Martin to corroborate Zimmerman's story that Martin grabbed his gun during the fight.
Anthony Gorgone testified that the only blood found on the gun's pistol grip was Zimmerman's, but said DNA from the holster and slide could not include or exclude Martin.
Gorgone also testified that swabs taken from the sleeves and cuffs of Martin's hoodie revealed no blood or DNA that could be linked to Zimmerman. He added swabs from underneath Martin's fingernails showed no sign of Zimmerman's DNA.
On cross-examination, defense attorney Don West argued that the rain on the night of the shooting could have destroyed any DNA evidence that would have corroborated Zimmerman's story.
Martin's mother: That's my son screaming for help
Martin's mother, Sybrina Fulton, was called to the witness stand Friday to identify the screams for help heard on a 911 call from the night her son was killed.
After prosecutors played the recording in the courtroom, Sybrina Fulton identified the voice screaming for help as "Trayvon Benjamin Martin."
During cross-examination, Martin's mother testified that hearing the 911 call was "absolutely" one of the worst things she ever experienced.
"As his mother, there was no doubt it was him screaming?" asked defense attorney Mark O'Mara.
"Absolutely," Sybrina Fulton said.
Martin's 22-year-old brother, Jahvaris Fulton, also testified that he recognized the voice on the 911 call as his brother.
During cross-examination, Mark O'Mara mentioned an interview where Jahvaris Fulton once said he was not initially certain whose voice was screaming on the call.
"When I heard it in the mayor's office [for the first time], I guess I didn't want to believe it was him," Fulton said. "I was clouded by shock and sadness."
On re-direct, Jahvaris Fulton testified that when he heard the call for the first time he was emotional and in denial about his brother's death.
After jurors heard from Martin's mother and brother, the State called the associate medical examiner who conducted the final autopsy on Martin's body.
Dr. Shiping Bao determined Martin's cause of death was a gunshot wound to the chest, and the manner of death was homicide.
Bao testified that, in his opinion, Martin did not die immediately and was "suffering" after he was shot.
"I believe he was alive for one to 10 minutes after he was shot. His heart was bleeding until there was no blood left," Bao said. "There's no chance he could survive. Zero."
During his testimony, Bao was seen reading from his personal notes. Defense attorney Don West asked for copies of Bao's notes to go over during the lunch recess, which led to a defiant response from the medical examiner. The judge allowed both the defense and prosecution to get copies of Bao's notes. The judge also told Bao to tell the court if he needed to refer to his notes.