SANFORD, Fla. —
DiMaio's testimony also addressed the difference between Zimmerman's account that he had placed Martin's arms out to his sides and a photo taken after the shooting that shows Martin's arms under his body. The pathologist said Martin would have been conscious for 10 to 15 seconds after the shooting as a reserve supply of oxygen ran out of his body, and during that time he could have moved his arms.
After DiMaio testified, the 911 calls that captured sounds of the fatal encounter were discussed again. Defense attorneys called Sanford City Manager Norton Bonaparte to the witness stand to describe the circumstances of how Martin's family came to hear the 911 tapes. Bonaparte said he played the 911 tapes while members of Martin's family sat together at City Hall. He played them as a courtesy before they were released publicly.
Defense attorneys are trying to show that Martin's family members may have influenced each other in concluding the screams are those of the Miami teen. Police officers testified for the defense that it's better for someone who is trying to identify a voice to listen to it alone.
Convincing the jury of who was screaming for help on the tape has become the primary goal of prosecutors and defense attorneys because it would help jurors evaluate Zimmerman's self-defense claim. Relatives of Martin's and Zimmerman's have offered conflicting opinions about who is heard screaming.
Zimmerman, 29, has pleaded not guilty to second-degree murder and says he shot Martin in self-defense during a scuffle in the townhome complex where he lived. Martin was there visiting his father and his father's fiancee.
Prosecutors contend that Zimmerman, who identifies himself as Hispanic, was profiling Martin and perceived the teen as someone suspicious in the neighborhood, which had been the site of a series of break-ins. The case sparked protests because police did not charge Zimmerman for 44 days and it touched off a nationwide debate about race and self-defense.