0 together, there's no limit to what we can achieve. good evening, everyone. an emotionally powerful and significant day in the george zimmerman trial. we'll bring you the testimony about trayvon martin's final moments and hear from zim zimmerman's lead attorney. edward snowden, nsa leaker, is at the airport in moscow, but not in russia. how is that possible? and later the high wire act that ahead tens of millions on the edge of their seat. he made it, but now nik wallenda has something bigger in mind. we begin with the powerful testimony at the george zimmerman trial. so powerful that trayvon martin's parents could not bear to hear it. it's centered on what happened in the seconds and minutes after george zimmerman shot trayvon martin as martin lay dying. it was by no means the only big moment today. there were others including a legal battle what the prosecution considers the linchpin of its case. but the testimony from the sergeant that tried to revive trayvon martin packed a serious punch. martin savidge joins us live. >> reporter: that was an extremely difficult day. this was a day that took the entire courtroom back to that failful night in february of 2012. this was the first time we heard the story. the jury is hearing this essentially for the first time. they've seen george zimmerman. they know he's the defendant. they've heard the name trayvon martin. but today they saw the body of trayvon martin. that had tremendous impact in the courtroom. you saw a teenager laying on the ground. and you knew the fact that he was dead. george zimmerman admits to shooting him. so the imagery was strong, but even stronger, it was the first responder who showed up on the scene moments after the shooting and is trying to revive this young teenager with the help of another officer. here is some of what went on in court today. day two of george zimmerman's murder trial took the courtroom back to that tragic night, february 26, 2012. for the first time, jurors saw the body of the teenager zimmerman killed, trayvon martin. and listen to graphic testimony from one of the first police officers on scene, who, with another officer, tried to revive the teen. >> after you rolled his body over on to his back, did you try to get a pulse? >> yes, sir, did. >> were you able to get a pulse? >> no, sir, i was not. >> what was your role on the cpr attempts on trayvon martin? >> i was doing breaths, sir. >> reporter: in the courtroom, martin's mother sat listening to the last moments of her son's life. >> did rescue take over the cpr efforts after they arrived? >> yes, sir. >> what did you see the rescue personnel do to treat or assess trayvon martin? >> i watched them hook up the leads of the akg machine. >> was trayvon martin pronounced dead by rescue at the scene? >> yes, sir. >> reporter: also taking the stand, a crime scene technician who gathered evidence around martin's evidence and examined the gun zimmerman used to shoot the teenager. she also photographed zimmerman's injuries, which the defense says were the result of a vicious attack from martin. >> do you see that sort of lump on the top right of his head? >> yes, i can. >> and you saw it that night, too, right? >> yes, i did. >> did you see that lump on the top of his head? >> yes, i do. >> the top right side, and you saw it that night, as well? >> that is correct. >> reporter: also shown in the courtroom was the hoody sweatshirt marten was wearing when he died. to many it's a symbol of racial profiling that elevated this case to a national debate. earlier in the day with the jury out of the courtroom, the defense and prosecution fought over phone calls, specific calls zim made to police prior to that fatal night. police records showed zimmerman made does dozens of calls to police states things he found suspicious. the state wants to introduce six from the six months prior in an effort to show zimmerman is frustrated seeing people as suspicious. they want to say zimmerman followed 17-year-old trayvon martin to make sure he wouldn't get away. the last witness on the stand said she saw two people standing upright and fighting that night, potentially more damaging to the defense, she said she heard a sound like running from left to right, possibly implying a chase. it's a detail she hadn't previously mentioned according to police transcripts. >> when was the first time you ever told anybody that you heard or saw whatever it was, movement from left to right outside of your back door? was it today? and if so, just tell us. >> i don't know if it was just today. >> okay. i'll ask it this way, could it be that the first time you mentioned this new piece of evidence was just now as you testified? >> it could be. i don't know. >> reporter: martin savidge, cnn, sanford. >> the trial is not only televised but playing out on camera, it's been that way since the shooting itself. last night, martin teach ben crump came okay the program. but he's not trying the case. mark o'harra is. your co-counsel got some attention for a knock knock joke. what did you think about it? >> we had not discussed it before hand. i think what was happening, don has been frustrated with some of what has been going on. i made no bones about the fact that we've frustrated with the discovery from the state. this was an attempt by him to loosen himself up a little bit, because he's carrying some of that frustration with him. i would note it didn't work the way he wanted it to. >> the state had wanted to have some audio experts, what they said were audio experts testify saying that on that 911 call that according to these audio experts, it was not george zimmerman's voice yelling for help. those so-called experts were not allowed to testify because essentially the fbi and others said the science just isn't there yet, the techniques aren't there. that must have been a key ruling for you. >> well, you know, yes and no. obviously on the surface, it looks like a key ruling but we have to back up. we had our expert witnesses who would say that it was george zimmerman. so i was not worried about the idea of having a sort of spectrum of experts to say everybody across the board. but what we realized once we found out about the case was that no expert could have a firm opinion about whose voice it was. even two of the state's experts, the two that the state pulled off of their witness list, those two witnesses said though they thought it might have been trayvon martin on the first scream or two, they believed or thought it was probably george zimmerman on the last scream or two. so it sounds as though this is some huge deal for the defense that we kept out this witness. that's not true. the evidence that would have come in would have been across the board. mr. owen, who has a financial interest would have said what he said, and that was only a tendency. and mr. rike was not let in because nobody else could create his supposed test. so i would almost have encouraged letting those people in front of a jury just so we could have shown them for what they are. >> how concerned are you about the presence of trayvon martin's parents in the courtroom? several times, because of testimony, graphic pictures, they have gotten up. his mother, his father today. apparently jurors are watching that, are seeing that. does that concern you? i know you had wanted the zimmerman parents to -- george zimmerman's parents to be able to be in the courtroom. they won't be until they have testified. >> this is a tragedy for both families. i've said that sense the first day we talked. and the victim's family, mr. martin's family has a right to be in the courtroom, and as long as they act appropriately, that they should stay there. obviously, there are things that we do that are somewhat insensitive to a family that has lost a loved one, and if they need to leave the courtroom because of that, i'm fine. what i don't want is any type of maneuver or show boating or something that would suggest to try to impact on that jury. as long as they stay away from negative impact on the jury, both the martin side and the zimmerman side, we'll have a good, just verdict based only on the evidence. >> it's probably too early to ask this, and you probably wouldn't answer it if you did know, but have you planned to have george zimmerman take the stand? >> that's a dynamic decision we have to make. the prosecution has to prove this case and that george did not do so in self-defense. they have to disprove self-defense beyond a reasonable doubt. if i think they ever get to that burden, then we might consider whether or not we have to present any case at all. >> mark, good to have you on. thank you. as always, what we see, what the trial attorney who is advocating for what his client sees, joining us time is paul henderson and mark geragos. mark, it's interesting to hear mark o'mara says he wished the opposite side had been introduced a witness just because how bad a witness he thought he would be. >> well, i feel his pain, so to speak. you cannot just lay down in a case like this and say we're not going to object to something that's complete junk or bogus science. but at the same time, can you imagine the sandbox you could play in if you put that so-called expert up on the sand? as a defense lawyer, you would have a field day. and i think the judge made obviously the right decision by keeping it out. there isn't anybody that would say that's a peer reviewed or generally accepted in the scientific community. i understand, most good defenses lawyers give up the opportunity to eviscerate somebody on the stand who has gone over the top in their opinion. >> palm, as we said earlier, zimmerman's defense team did spend a lot of time today trying to keep the jury from hearing those past 911 calls. how damaging do you think they could be if they're admitted? >> well, one of the things that people would hear or could hear is that maybe there was a past pat attorney or past practice or they would glean from those conversations that this guy really was acting in a style that was more similar to vigilante rather than someone just protecting the neighborhood. so this is why you see the prosecution fighting so hard to introduce those tapes and to show that to the jury to try and give them their lens of why zimmerman behaved the way he did on that night and how he approached the ultimate confrontation that ended up in the homicide -- or ended up in the death. >> mark, those calls cut both ways. you could listen to them and say he was the neighborhood watch guy and those are the calls he's making. >> you know, anderson, you would think that i did a preinterview with you, because i would thinking the same thing. these calls, generally, and you ask paul, i've been in case where is the prosecutor would want to put that on. here's somebody who is being a good samaritan, somebody who is trying to do the right thing. and what is their reward? you know, they end up getting into a fista cuffs with somebody. so it cuts both ways. i understand what the prosecution is trying to do. they're trying to tap into this kind of collective, unconscious, if you will, that people have, the feeling that they have about security types or wannabe security types or neighborhood watch people. i think the problem they've got is, they're playing from a prosecution playbook, but they do not have their typical prosecution kind of script hor set of facts that they normally would have. i'm not sure that what they're doing is effective. >> mark, the jurors did see these crime scene photos today of trayvon martin. some of them were very graphic. the prosecution didn't seem to be trying to prove anything in particular by showing them. is that common to enter evidence in order to elicit emotion or sympathy from the jury? >> absolutely. this is actually a little bit unorthodox. i generally have the experience where the prosecutors will wait until maybe towards the end of the case to introduce the autopsy pictures or crime scene photos. the reason is, you want to have the jurors not be desensitized to them, if that could happen, but you want to send them off into the jury room with that image in their minds. it's a little unorthodox to front load with this. so they have a reverse playbook on the usual prosecutor does. >> we also saw a pictures of george zimmerman, the injures he sustained. paul, mark, thank you. lot us know what you think. follow me on twitter. coming up next, edward snowden is in moscow at the airport, at least we believe he's there. but russia's president says he can't be extradited to the united states. we'll take a look at why that is and what, if anything, is russian intelligence up to when it comes to the secrets he may be carrying. >> >> later, the little girl that was taken from her adoptive parents. today, the supreme court gave them hope. they join us shortly. la's known definitely for its traffic, congestion, for it's smog. but there are a lot of people that do ride the bus. and now that the busses are running on natural gas, they don't throw out as much pollution to the earth. so i feel good. i feel like i'm doing my part to help out the environment. ♪ nothing says, "i'm happy to see you too," like a milk-bone biscuit. ♪ say it with milk-bone. ♪ now you can give yourself a kick in the rear! v8 v-fusion plus energy. natural energy from green tea plus fruits and veggies. need a little kick? 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