>> this is the back view of the hoodie sweatshirt. exhibit 104, what does that photograph show, dr. bao? >> this is another sweatshirt under the hole in the sweatshirt. the blood, the defect, the marker. the black appears to be soot, s-o-o-t, soot. again we have the case number. >> dr. bao, just to make sure the jury understands, state's exhibit -- i'm going back to state's exhibit 85. was that sweatshirt we talked about under this hoodie sweatshirt? >> yes. >> state's exhibit 104, is that the front part of the sweatshirt? >> yes. >> okay. state's exhibit 105, what does that photograph show? >> this is just a close-up of the previous one. again, you can see there the defect, blood and the soot which is burned powder from the gun. >> state's exhibit 106, what does that photograph show? >> this is the back view of shirt. there is no defect which means there is no exit wound. >> state's exhibit 107, what does that photograph show? >> this is the pants. appears to be wet and some debris. >> okay. is that the front part of the pants? >> fro

. >> when you say two inches, you're accounting for the sweatshirt underneath and then the hoodie or sweatshirt with the hood over it, correct? >> no. >> you're not because you're saying the hole kind of creates a barrier. >> right. i'm talking between the skin and the muzzle. >> okay. now, have you ever worn one of those hoodies, those jacket sweatshirts? >> not that type, no. >> okay. have you seen people wearing them? >> yes, sir. >> don't they normally wear them a little big? >> yes, sir. >> okay. don't they kind of hang down? >> yes, sir. >> and if i had -- if the person wearing it has it hanging down and has something in it, wouldn't it hang down? >> objection, speculation. outside the scope of this particular case. >> your honor, i believe i'm allowed to ask. he asked in terms of possibilities. >> yes, sir. >> wouldn't you agree if i have something here heavy, it's hanging down, right? >> right. >> and that would make it a little tighter, right? >> yes, sir. >> you were asked about the dna. i know at some point you were head of the lab. i think it was in texas, wasn't it? >> ye

there were two garments the hoodie sweatshirt and underlying sweatshirt and the body. she's looking at gunshot residue, burned and unburned particles and the tearing and singeing of the fibers around the hull. the conclusion is clear and makes sense to me it was a contact shot. what is mysterious is the autopsy report indicates not that it was a close shot or a contact shot but it was an intermediate distance shot which tells me it was probably between six and 18 inches. >> so who's likely to be more accurate? >> i would tend to think the ballistics expert is more accurate. the bullet had to penetrate both garments before it hit the body. you wouldn't necessarily see the stiping, which is the burning and bragss in the skin around the hole, the bullet hole. therefore, if you see those stipling marks, sometimes called tattooing you can conclude the distance. >> does it really matter? >> honestly it doesn't. both will indicate a close-in shot, a struggle. >> that's no surprise. >> no surprise. it supports george zimmerman's story. >> the prosecution had the dna testifies

remember that there are two garment, the hoodie sweatshirt and an underlying sweatshirt and then the body. she's looking at gunshot residue, burned and unburned particles, and the tearing and singeing of the fibers around the hall. the conclusion makes sense to me that it was a contact shot. what's mysterious is that the autopsy report indicate not that it was a close shot or contact shot, but rather it was an intermediate distance shot which tellses me it was probably between six and 18 inches. >> who is likely to be more accurate? >> i would tend to think that the ballistics expert is more accurate because that bullet had to penetrate both garments before it hit the body. you wouldn't necessarily see the stipelling which is the burning and the abrasions in the skin around the hole, the bullet hole and therefore, if you see those stipelling mark, sometimes called tattooing then you can conclude the distance. >> does it really matter, the distance in this? >> it doesn't because both would indicate a close end shot and a struggle. >> it supports george zimmerman's story. >> sunny, the

. >> when you conducted the distance test with the cal tek pistol and the hoodie sweatshirt, what didetermine about the distance between the muzzle of the gun and the material at the time the gun was discharged? >> the clothing displayed residues and physical effects consistent with a contact shot. >> meaning the muzzle or the end of the barrel of the gun was up against the sweatshirt when it was fired? >> correct. >> all right. let's go to states 127. what is that? >> this is the other spet sweatshirt that i had received to do distance determination of. >> there again, you made measurementes where the hole is relative on the sweatshirt? >> yes. >> all right. incidentally, if both of those sweatshirts were being worn in their intended fashion, that is, forward, do the two bullet holes line up? >> they do. >> 128, what do we see there? >> with this, we are looking at the tearing of the fabric, you can see there are a few gunpowder particles which are not easily depicted in this photo as well as some light sooting and burning and singeeing of the ends of the fabric. >> and the reddish b

hoodie. the sweatshirt that martin was wearing on the night that would be his very last.certainly become an icon. does the forensic evidence show that shirt was pressed up against martin's chest, or hanging down when he was shot? the difference could show whether or not martin was on top of zimmerman during the struggle as he contends. an expert testified wednesday about tests that she ran on the hoodie and a second sweatshirt martin was wearing. >> this is a close-up shot of the tests that i had generated with the lighter colored sweatshirt depicting a little better that you can see the tearing and the blackening of the fabric right around the hole. >> all right. are your findings consistent with the muzzle of the gun having been pressed into the dark hooded sweatshirt and then fired through both the dark hooded sweatshirt and the lighter colored sweatshirt? >> it is consistent with the muzzle of the firearm touching the outer sweatshirt and inner sweatshirt being in direct contact, yes. >> meshing the physical evidence with witness accounts of what happened on that rain

. >> and when you say two inches you are accounting for the sweatshirt underneath and then the hoodie or sweatshirt with the hood over it, correct? >> no. >> you are saying the hole creates a barrier. >> i am talking between the skin and the muzzle. >> now, have you ever worn one of those hoodies? >> not that type, no. >> you are watching the zimmerman trial. the prosecutor in the case trying to poke some holes here in the defense witness, really a very renowned pathology expert in his account and his analysis of the evening of the murder. we will be right back after a quick break. "stubborn love" by the lumineers did you i did. email? so what did you think of the house? did you see the school ratings? oh, you're right. hey babe, i got to go. bye daddy! have a good day at school, ok? ...but what about when my parents visit? ok. i just love this one... and it's next to a park. i love it. i love it too. here's our new house... daddy! you're not just looking for a house. you're looking for a place for your life to happen. >>> we are monitoring the george zimmerman trial. right now on the

and the hoodie and the sweatshirt, the hoodie that became such a symbol. one of the key defense arguments was that the hoodie was separated by about two to four inches from the body. and trayvon martin had to be leaning over george zimmerman, threatening him so zimmerman would have to shoot. they were gathered at the bottom, didn't necessarily mean he was leaning over. we never heard that argument. did the prosecutors not look at the evidence. did they not review it over and over again? did he not work on a closing argument that pulled together a cohesive theory. i have been flabbergasted, especially through the second half of the trial i looked at the evidence over and over again, i looked at what was going on in the courtroom and i had to shake my head and wonder what was going on in there. i don't have an explanation for it. i wish someone would ask the prosecutors. >> as a layperson watching the trial, there were times you wanted to jump up and say, why aren't they asking a rebuttal question. they would put up witnesses, but never question his story mo

on trayvon martin's hoody and sweatshirt where the 17-year-old's dry blood is still visible, almost alld.n.a. belonged to martin. just a speck of zimmerman's d.n.a. was on martin's shirt. underneath martin's fingernails the analysts found no d.n.a. material belonging to zimmerman. don west questioned how the rain that night could effect what's found. >> sometimes you can touch an object and there not be any d.n.a. left behind. >> that's correct. >> sometimes if there might even be blood it could be wiped off? >> yes, that's correct as well. items can be washed and cleaned, wiped, washed, and that could effect my ability to get any d.n.a. from touch evidence or blood evidence on an item. >> and the key claim by zimmerman in why he had to pull the trigger is that he says martin grabbed his gun before the fatal shot but on that handgun, there was no d.n.a. material found from martin. it all belonged to zimmerman. shep? >> shepard: hey, jurors also got to see he that gun again, right? they actually pulled the trigger today. >> absolutely it was in the courtroom and it was handled and cocked

authorities also found a hoodie sweatshirt that seem to marriage what hernandez was wearing the night murder charges. >>> the federal cuts known as the sequester are extinguishing fireworks activities as a number of military bases this year. the money krurncrunch is a big o morale especially with those service members with children. >>> prosecutors expected to rest their case against george zimmerman friday. court is dark today in honor of the fourth of july holiday. >>> opponents of nsa's surveillance program are taking to the streets in protest on this independence, restore the fourth demonstrations happening across the nation. >>> president obama will spend the fourth of july celebrating with military heroes. they are having a barbecue at the white house. that includes a concert and some fireworks. >>> chowing down on coney island. joey chestnut goes for a record seventh straight victory in the nathan's hot dog eating contest. last year he ate 68 hot dogs and buns in ten minutes. >>> joint chiefs chairman general martin dempsey performs the national anthem at tonight's washington n

just loose contact. >> now, how about the fact that you had two sweatshirts, what's referred to as the hoodiether sweatshirt? does that add an a ddditional barrier in terms of loose? >> i cannot tell. i want to talk about the position of the body when shot. in the movies and tv, they tell you exactly what happened. can you say, based on autopsy exactly the position trayvon martin was, in terms of standing up, sitting down, lying down, on top of somebody, below somebody, are you able to say u unequivocally the position of the body when he was shot? >> i have no fact, i have zero opinion. >> okay. can you say unequivocally he was shot from the front, in other words, somebody -- the gun was in front of him when he was shot? >> yes. i do know that. >> is there any dispute about that? >> no. >> now, i want to talk about how long trayvon martin was possibly alive, in terms of you've already opined about that. i want to explore a little bit more by some questions. in terms of -- thank you, your honor. in terms of is death immediate and i want to talk about whether he went unconscious or not. do you

. >> how about what's been referred to as the hoodie and another sweatshirt? does that add an additional barrier in terms of loose? >> i cannot tell. >> okay. i want to talk about the position of the body when shot. >> okay. >> in the movies and on tv they say we can tell you how it happened. are you able based on the autopsy able to say exactly the position that trayvon martin was -- >> good morning. i'm ashley banfield live in sanford, florida. we are at the top of the hour. the prosecutor in the trayvon martin second-degree murder case is questioning the final witness. critical to get you up to speed on how the case is wrapping up today. first on the stand with powerful testimony, trayvon martin's mother. second on the stand, trayvon martin's brother. both of them testifying to who it was scream iing on the 911 cl the night trayvon died. both testifying that was trayvon martin. the brother having to admit i wasn't so certain when i was questioned earlier on oh in this case. back in with the medical examiner testifying as to the injury, bullet wound and cont

and he won't even take a hoodie and a baggy sweatshirt and put it on to prove his point? >> ken, as lisa was raising, dramatizing that point with the hoodie, something else comes to mind. as the coroner was part of the testimony was going to go by, because if i'm on top of someone, she is saying if i'm wearing baggy stuff, it would be baggy. but if i'm on top of someone, pummelling them, wouldn't that make the clothes come tighter to me rather than hang off of me? i mean, if you're reaching back, that brings the clothes to you. >> lisa has some excellent points. and the problem here is, though, we're debating this on television. but in that courtroom, the only thing those jurors are concerned about is what they're hearing in evidence. and what came in evidence is a very, very strong witness for the defense. and a very mediocre cross-examination. you know, i've done 35 first-degree murder trials. i'm not an expert pathologist. i hire the best pathologists in the country in a high profile case like this to advise me on what questions to attack the defense expert witness. and

one thing i'd suggest to you, there was a big deal made about the jacket or the hoodie or the sweatshirt how it had to be consistent with the can and how to do that. that button might have something to do with the way the sweatshirt is kind of hanging. it's a little big on him. but also that might affect the angle of how much is sticking out of the sweatshirt. you decide. state's exhibit 23, why is that important? do you see any blood on his hands? on the victim's hands? state's exhibit 24, do you see any blood on his hands? i mean, is there any dispute that the defendant's mouth, nose, i'm sorry, had some blood on it? how come there isn't any blood on the victim's hands? because the argument was made or suggested to you in terms of the cross-examination of the medical examiner and all that, oh, he had to wash his hand, that was inaccurate, you don't know what you're doing there. well, right there at the scene, where was the blood? the other interesting thing is that i will submit to you based on the evidence, i don't know what you call this, i don't know if it's a draw string or what. w

he testified in great detail about trayvon martin's bullet wound and his now famous hoodie, that sweatshirthe was wearing. he says the evidence is consistent with zimmerman's account that martin was leaning over him when he shot him. listen to this. >> if you lean over somebody, you would notice that the clothing tends to fall away from the chest. if instead you're lying on your back and somebody shoots you, the clothing is going to be against your chest. so that the fact that we know the clothing was two to four inches away is consistent with somebody clean leaning over the prn person doing the shooting and that the clothing is two to four inches away from the person firing. >> you mayonsider in your opinion as well that the clothing was wet. mr. martin's shirt was described as being damp, that it had been raining that night and that when it was photographed at the medical examiner's office the next day, it was obviously wet in places. you may also consider that the responding officers found an unopened can of a beverage in the front pouch of mr. martin's hooded sweatshirt. this is in evid

suggest to you might be important to note on that, there was a big deal made about the jacket or hoodie or sweatshirt, how it had to be consistent with the can and had to do that. that button might have to do something with the way that sweatshirt is kind of hanging. it's a little big on him, but also that might affect the angle how much it's sticking out, the sweatshirt, you decide. state's exhibit 23. why is that important? see any blood on the victim's hands? state exhibit 24, do you see any blood on his hands? is there any dispute the defendant's mouth, nose -- i'm sorry, he had some blood on it? how come there isn't any blood on the victim's hands? because the argument was made or suggested to you in temps of the cross-examination of the medical examiner. he had to wash his hands. y'all didn't know what you were doing there. right at the scene, where was the blood? the other interesting thing is, i would submit to you, based on the evidence, i don't know what you call this, i don't know if it's a drawstring or what, why is one of them a lot longer than the other one? was the defendant maybe pull

they mention that had trayvon martin was wearing a hoodie with a sweatshirt underneath which explains why it would be separated from his body even if he were in a standing position. that was an important defense argument. they refused to address the issue of race. they hid from the issue of race while the defense addressed it squarely. and they never offered a theory of the case. so when i was asked to indicate, as i think many legal pundits were. i want to emphasize to everybody listening, that doesn't mean the evidence wasn't there. i can't explain why the prosecution in this case made the decisions that they made but this was a very predictable outcome. >> we are less than two minutes away from the state attorney coming to the microphone and reto this. i think if we can briefly, it is worth making at least a statement about, does this speak to a larger issue of race in america and our perceptions of young black men who have a hoodie up and are walking through a neighborhood. is it about the prosecution? is about it this jury? do we know? >> i think this is the reason why you need t

you know, we're going to see that hoodie, that famous hoodie, that sweatshirt that trayvon martin wasr welcome the hood around his head. what does that suggest to you as a criminal -- as a criminal defense attorney, page? >> well, it's a critical piece of evidence, wolf, we've always known that from the beginning of the trial. but at this point, though, the defense doesn't just get to ask prosecution witnesses questions, they get to frent their own theory through their own expert, as to how the injuries may have occurred, how the death may have occurred, and obviously, the point is to help establish the self-defense claim. >> that george zimmerman acted in self-defense and that's why he shot and killed trayvon martin. but once again, explain why, what trayvon martin was wearing, specifically that sweatshirt with the hood over his head, why that would be so important. why do they have to go through all of that? >> well, at this point, we can only speculate until we actually hear the witness testify, was i assume this witness is going to talk about the markings on the sweatshirt and oth

that will show you, you will actually see from the forensic specialist whether or not that sweatshirt, that hoody was flat against the decedent's chest when he was shot. if it was flat against his chest, chances are he was on the bottom or standing up when he he was shot. if, on the other hand, there is a distance and can you tell by the debris that a gunshot fires, that there was a distance between the sweatshirt and the chest, that probably means that trayvon martin was leaning over george zimmerman. and the only reason i focus on that, you have got to find some evidence to sort of corroborate something, and that may be the one piece of scientific evidence. i will say one other thing is that if the jury is unsure who to believe, whether trayvon martin, it will be deceased he can't be here. george zimmerman's story they are just not sure. if it's a tie they have got to find not guilty because the burden of burden of proof s beyond a reasonable doubt. bad for the prosecution right now with you they could still win. >> bill: onehave a question ab, greta. zimmerman contends that trayvon martin was

hoodie that's become famous, and a shirt underneath. the shirt underneath gathers at the bottom, as many sweatshirts do. then it kind of puckers out. the hoodie on top had the arizona fruit drink in the front pocket. that also could have caused the sweatshirt to pucker out over that. we're talking about two to four inches. two inches is not very much. i think there are other explanations other than necessarily that trayvon martin was over george zimmerman. that's one possibility. i think there are other possibilities too. >> lisa, i want to toss to seema. we keep hearing about the potential of trayvon having been on top of george zimmerman at the time he was shot. wouldn't there then be blood all over george zimmerman? >> not necessarily. it depends on the injuries and the impact of the bullet. i think this is really important. what takes place here -- if you've ever -- and maybe patrick has in his career -- observed autopsies. i've actually assisted in hundreds of them. because trayvon was so thin, there's such a short distance from his sternum to his heart. so that's why the two to four inches is so important in this case. trayvon

organizers are encouraging people to wear hooded sweatshirts. hoodiesbol of support for martin who was wearing a hooded sweatshirt when he was shot and killed by george zimmerman last year. >>> thousands are getting ready to take part in san francisco's annual aids walk. alex savage is live at golden gate park. >> reporter: this is the 27th aids walk. thousands of people are streaming into golden gate park. this is a live look now. org nicers are expected -- organizers are expecting about 15,000 people to come down to walk and fight hiv around the bay area. this is an important walk for a lot of people. many are walking with teams and companies that support walkers but a lot of people walking for personal reasons, people in their lives impacted by aids and hiv. with that being said, let me bring in the ceo of san francisco aids foundation. the event today goes to support your foundation and the work you do. first of all, how much money? you are crunching the numbers. how much money do you think you will raise today. >> depends on how much people show up

that might be important to note on that is it was a big tedeal made about the jacket or the hoodie or the sweatshirt. how it had to be consistent with the can and how to do that. well, that button might have something to do with the way that sweatshirt was kind of hanging. it's a little big on him. but also that might affect the angle of how much is sticking out, the sweatshirt. you decide. state's exhibit 23. why is that important? do you see any blood on his hands? on the victim's hands? state's exhibit 24. do you see any blood on his hands? i mean, is there any dispute that the defendant's mouth, nose -- i'm sorry, he had some blood on it. how come there isn't any blood on the victim's hands? because the argument was made or suggested to you in terms of the cross-examination of the medical examiner and all that, oh, he had to wash his hands. you all didn't know what you were doing there. right there at the scene, where was the blood? the other interesting thing is that i will submit to you just based on the evidence, i don't know what you call this. i don't know if it's a draw string or what. why

physical evidence was that the muzzle was literally in contact with the fabric of the outer sweatshirt, the hoodiee the autopsy report describes the shot as an intermediate shot which means that the muzzle was six inches to perhaps 18 inches away from that garment. there is a contradiction here. i tend to go forward with amy's conclusion because the bullet had a penetrate two layers of clothing before it hit the body. i think she's probably closer to the truth. >> the that good or bad for the prosecution in this case? >> it doesn't make a lot of difference. it points to the fact there's a struggle as opposed to a distance shot which wouldn't go along with george zimmerman's hypothesis. >> he acknowledges he did fire that bullet into trayvon martin's heart. >> indeed. there's no question about that. the question is was it part of a struggle? did trayvon martin go for the gun? there's no dna evidence on the gun from trayvon martin. you really can't draw a conclusion. we really haven't heard definitive that george zimmerman said when he spoke to the police that trayvon martin touched the gun. just th

murder trial where they are going through the dna evidence and showing the witness the hooded sweatshirt, the hoodieng the night in question. let's watch. >> circled right here are the numbers or the letters or something. how did they get to that? >> those are the stains that i saw during my visual examination of the item for possible blood. i performed the chemical test for blood on those items, on those stains, and i labeled them a, b and c. >> and we are going to get the photographs and we will also -- let me turn this around. did you examine the whole thing? >> yes. >> now this cutting, did you have anything to do with this cutting there? >> no, that was in tact when i examined the item. >> there appears to be on the backside of the item some writing here and some i would refer to them as holes. but can you explain that, sir? >> that would be my stain c that i examined and those are the cuttings that i took to perform the dna testing. for this one i took three small and put them in as a sample. >> as opposed to the prior sample you have to swab you are making cuttings? >> correct. >> there also

relevant part of our testimony was that the end of the barrel was up against the shirt, the sweatshirt and hoodieworn by trayvon martin. the defense on cross-examination, and this may prove to be important, wanted to make the point that the end of the gun, the barrel of the gun was simply up against it. it was not pushing up and through and they may have an expert that they will put on the witness stand who is going to say their testing demonstrates that trayvon martin was on top of zimmerman and the angle and trajectory and forensics showed that his arms were up as if he was in the process of striking george zimmerman. we don't know that for sure. but there has been some suggestion the defense may do that. and the cross-examination seemed to suggest that that is where they may be heading. we're going to continue to follow what's happening in the george zimmerman second agree murder trial -- second-degree murder trial. they're likely going into a lunchtime recess right now. the jurors i believe are being adjourned from the courtroom. stay tuned for more of our coverage as soon as further witnesse

from this crime lab analyst specifically talking now about blood found on trayvon martin's sweatshirt, that hoodiemr. gorgone, let's talk about the findings regarding the hooded jacket recovered from -- or that mr. trayvon martin was wearing. i'm showing you state's exhibit 119. does that -- can you show us where there's a stain there or appears to be a stain there? >> that would be stain "c" which was on the back of the sweatshirt. >> am i circling it right here? >> yes. >> okay. so in addition to actually making your cuttings, you're photographing what you do so that if you had to come and explain it to somebody or testify about it, you would be able to say this is exactly where i got this cutting and this is where i got this result? >> correct. this is a photograph of before i did any testing. obviously there's no cutting taken there yet. but in my notes i describe chemical tests for blood, the result, cutting taken, cutting not taken, and so on. >> state's exhibit -- i'm going back to 203, i believe it is. i want to ask you about the results. let's talk about stain "a" that we've shown the jur

sweatshirts. the one they are holding and the hoodie he was wearing.se the woman in the front of your screen, she's florida department of law expert analyst on handguns and guns in general. she was up on the stand describing the gun that george zimmerman used to inflict that deadly wound. george howell is with me. i cannot stress enough how difficult that must be, let's not forget there was a 17-year-old boy behind that bullet wound in that sweatshirt and his parents are looking at every part of this. >> when you hear the testimony associated with what we're see. we're talki ining about a gunfi at close range. talking about how she did these distance examinations. the distance between the muzzle and the fabric. she said this was fired at close range, contact. the muzzle right on the fabric. >> think about this for a moment. demonstrate if you're wearing a bulky sweatshirt, if you're leaning forward does your shirt pouch out because i think where the defense wanted to go was did you measure the distance between the muzzle and the skin or the muzzle and

the most important question and that is if a slender kid is wearing an extra large sweatshirt and an extra large hoodieldn't it be consistent with him being shot standing up? this doctor did no testing. >> stephanie: roger, i asked this question as well. they had witnesses that said it was zimmerman on top. and i have no idea why the prosecution went with this one -- because you're right. it is one witness. they can be wrong right? excuse me, not witness. the gunshot expert. >> if he's wearing that large a sweatshirt, that can have it two to four inches away from the body. >> stephanie: let's go to ronnie in jersey. you're on "the stephanie miller show." hi ronnie. >> caller: hi. is this stephanie? >> stephanie: yes. >> caller: i'm not getting audio. i guess i'm directing this toward the guys, i don't know. i know myself and if i was in the situation where my body and my mind was screaming for help, my life is in danger, and if i shot this guy especially the first and only guy i ever shot, i don't know how i would stop scream at that point. i would either scream curses at the guy for trying to kill me

hoody and the bullet hole created by the .9 millimeter pistol. what a state ballistics expert described as a contact shot. >> meaning the muzzle or the barrel of the gun was up against the sweatshirt when it was fired? >> correct. >> a complete dna profile which matched george zimmerman. >> reporter: dna testimony confirmed only zimmerman's fingerprints found on the gun and no dna of zimmerman's found underneath trayvon's finger nails. it was also a day zimmerman's law enforcement know-how was made public with his college professor, army prosecutor, saying that zimmerman aced a criminal litigation class. >> probably one of the better students in the class. >> 2010 course included discussions of florida's self-defense law, commonly called stand your ground. contradicting zimmerman's tv interview, where he said he had no knowledge of the law. before shoot iing martin. >> prior to this night, this incident, had you even heard stand your ground? >> no, sir. >> reporter: zimmerman has pled not guilty saying he fired in self-defense. the witness testified that he taught that self-defense has its limits. >> we talked about imperfect self-defense, where you may have started out being the

hoodies, that's something younger people tend to wear. but the point that they're baggy, they're not right up against the skin. even if trayvon martin had been standing up, the sweatshirtld have easily been 2 inches away from his skin. but then dr. di maio really maintained his position, that because there was this 2 to 4-inch gap, it really indicated that george zimmerman was down, that trayvon martin was over him and that gravity was pulling the sweatshirt away from his body. >> indeed. the defense managed to persuade the judge initially they would be able to introduce this evidence of small particles of the chemical found in marijuana as a result of the toxicology report in trayvon martin's body. and now they've chosen not, apparently, to use that evidence. what's their intention? why were they seeking to introduce that? >> well, obviously they want to suggest that mr. martin was under the influence somehow. the elements in marijuana might have altered his judgment, probably arguing or implying that it made him a bit aggressive, that he was out of sorts, and that, therefore, he was a person who was not his normal self, and, you know, being, quote, high on marijuana

reporter: the hoodie was tested saying zimmerman's gun was actually touching the fabric when he fired the fatal shot. >> what did you find distance-wise when you conducted the test with the sweatshirt. >> it is consistent with a contact shot. >> so again, evidence saying that the end of the gun was against the material when it was fired? >> yes. >> the prosecution also pointed out the night he killed martin, zimmerman carried a loaded gun with a chamber ready to fire and the defense got them to admit that is not out of the ordinary. >> you did not consider that to be unusual, did you? >> no. >> reporter: the state showed zimmerman didn't just want to be a cop but was learning how to become one, studying criminal justice at a college. a former professor said he was one of his best students and gave him an a. zimmerman knew nothing of florida stand your ground law the night he killed martin but the professor said it was a frequent discussion in the class. >> i wanted to teach the class from a practical standpoint where they can take it and apply it. in florida and other states they have what's called the stand your ground law, which evolved from the castle doctrine from case law. >>

reporter: the hoodie was tested saying zimmerman's gun was actually touching the fabric when he fired the fatal shot. >> what did you find distance-wise when you conducted the test with the sweatshirt it is consistent with a contact shot. >> so again, evidence saying that the end of the gun was against the material when it was fired? >> yes. >> the prosecution also pointed out the night he killed martin, zimmerman carried a loaded gun with a chamber ready to fire and the defense got them to admit that is not out of the ordinary. >> you did not consider that to be unusual, did you? >> no. >> reporter: the state showed zimmerman didn't just want to be a cop but was learning how to become one, studying criminal justice at a college. a former professor said he was one of his best students and gave him an a. zimmerman knew nothing of florida stand your ground law the night he killed martin but the professor said it was a frequent discussion in the class. >> i wanted to teach the class from a pack tickractical standp where they can take it and apply it. in florida and other states they have what's called the stand your ground law, which evolved from the castle doctrine from case law. >>

hoodie the night he was shot dead. you can see exactly where the bullet wound entered his heart and killed him. you can see the blood that leaked out on to that sweatshirtatters where that gun was when it went off. the woman who you see on your screen, a gun expert testified it was a contact wound, contact with the clothing. she couldn't say contact with the body. that's likely to come up and be very key later on in the trial when we get to the actual autopsy. you have been sitting with the mother and father of trayvon martin all day long as they have watched that evidence and the blood of their scene being marched for the courtroom for everyone to see. >> it was tough on them. you may have noticed i asked them to take a break. they did take a break. they were right outside of the courtroom. very hard to sit there day after day and to listen to the testimony. as you know those same exhibits being paraded in front of them time and time again both on direct and cross examination. so they continue to endure -- >> you're a lawyer and these are lawyers. and those florida department of law enforcement investigators, this is their life blood, this is every day

the hoody was also tested who said zimmerman's gun was actually touching the fabric when he fired the fatal shot. >> what did you find distance wise when you conducted the test with this sweatshirthis as well was consistent with physical effects of a contact shot. >> so again, evidencing that the end of the gun was against the material when it was fired? >> yes. >> reporter: the prosecution also pointed out the night he killed martin, zimmerman carried a fully loaded weapon ready to fire. but on cross-examination, the defense got the witness to admit that was not out of the ordinary. >> you did not consider that to be an unusual occurrence? >> no. >> reporter: earlier, the state was out to show that zimmerman did not just want to be a cop, he was trying to learn how to become one, studying criminal justice at a local college. >> how are you doing, george? >> reporter: on a stand, a former professor described zimmerman as one of his best student and gave him an a. zimmerman said he knew nothing of florida's stand your ground law the night he killed martin. but the professor said it was a frequent source of discussion in the class. >> i wanted to teach the class where these studen