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Voice. it wasn't that fireworks that they were hoping for. it was still a strong case, a strong defense case and i think they did as much as they could hope for. >> obviously that 3-d animation. yesterday the defense had the forensics expert. today their first witness was dennis. the cross examination on this one was really intense and the state brought a dummy into the courtroom to ask about the medical examiner's determination that martin was shot and the angle and the crucial questions to determine who was the aggress aggressor. i want to play this to show you what happened with the dummy. ...

Were pretty much the forensics expert that the defense called up there, and that the forensics expert testified that george zimmerman's account of what happened matches up with the forensics, he said it makes sense there was no bruises on trayvon martin's hands even though he delivered that kind of -- you know, beatdown to george zimmerman, the reason why? well, he was dead. once your blood stops flowing, you stop bruising. another good point, the defense believes trayvon martin was only alive for about three minutes after he was shot. why does that matter? because this expert was saying that ...

They're going to talk to could have their testimony taken but not necessarily be called to the stand. lisa, you can probably speak a little more to proffering witnesses. even if this animation isn't admitted, it will be presented to the jury. >> lisa, can you answer to that. >> so a proffer is when they put a witness on to testify outside the presence of a jury simply to preserve a record. so let's say the defense is not able to testify because of an expert they wanted to put on, the jury would not be in the room, but there will be questions and answers all preserved on the record so if the de...

I think they have closing arguments where they will tie the loose ends and they have rebuttal. the trial isn't over and i think we haven't seen them tie up loose ends. i have seen loose ends i know will be tied up in closing. >> in talking to martin savidge, though we in the media and you on the legal side have had great knowledge of the case, it was probably the first time to date the jury actually heard evidence directly from an expert, forensics expert that there was no trayvon dna on that gun. how significant was that moment in court do you think today? >> i think it is very significant. w...

Forensics expert. want to get your take on the numerous extraordinary crime stories engulfing america right now. let's start immediately with this adam lanza case. it is an ongoing problem. i have three sons who all love these video games and you do immediately think could my son potentially be prone to any kind of violent act because of the violent imagery in these games. what do you think? >> i think with this young man, you had an unbelievable recipe for disaster on so many different fronts and this is where there's got to be some kind of supervision. you don't have a child babysat by havin...