elizabeth cohen is our senior medical correspondent. had what are you seeing, what are you hearing about triage efforts under way right now dealing with the injured? >> hi. >> elizabeth, can you hear me? are you there? >> yes, i am, wolf. we see injured. we know some of them have been taken to hospitals in the area. but there are other triage efforts i understand under way right now as well. >> right. as we understand it, this is a huge event. i grew up in boston, been to this event many times. the presence of medical staff is very obvious and apparent. you can go to the mayor's blog and a week ago he spoke about the number -- someone wrote about the number of staff, 50 extra emts and paramedics, four physicians, ambulances, medical tents, bikes. so this is a place where there is already a big presence of emergency medical staff. now, obviously you want to get people who are really injured to a hospital as soon as possible, and there are many great hospitals right there in that area, but it is good to know how well staffed that area rig

elizabeth cohen on the ground there, near a large majority of activity. elizabeth. >> hi, d sfwlnch h-- yes. i'm right here. so i'm right here in cambridge this is the town -- i'm in cambridge, the town next to boston. and a block down from the -- you may be able to see the yellow crime tape is norfolk street, where dzhokhar tsavraev lived. they have blocked off the entire block, filled with fbi personnel. you can see them everywhere and about a half an hour ago, jessijes jessica met sfwln tncmetzker, a, saw him walk in where he lived and bring out a woman. didn't appear to be apprehending her, didn't appear to be arresting her, but they were interested in speaking of her. i have with me, he has to go under the crime scene tape. peter hanley. you live a couple of doors down. >> five doors down. >> for the morning, we knew a lot was going on in watertown. we never expected it would come to us in cambridge. especially after last night's events and we were following things on tv, twitter, trying to inform ourselves. we knew that, you know, there was a lockdo

elizabeth cohen joins us now -- people thought the bad weather and rain last night could be a bad thing. ended up perhaps being a miracle. elizabeth, let me start with you in terms of the damage that can be caused from the ammonia when people are getting chemical burns and people afraid it could cause physical damage. >> it's true. it can cause a whole array of damage. so what you dread is this huge concentration coming at you. that can kill you, actually, quite quickly. now, what you hope for is that it's so dilute and you're breathing in a low ka concentration. you might feel burning in your nose and throat, but probably no long lasting effects. >> and does it matter how far away you were from the location of the explosion? >> absolutely. the concentration's going to be highest right near it. and it's going to be lowest farther away. i don't want to say a blessing here, but an explosion will actually burn some of this up. so that's a good thing in some ways. >> burn it off. >> right. exactly. >> and exactly what kind of health problems does this pose in addition to what you were just

this is a serious situation, elizabeth cohen, medical correspondent. senior medical correspondent, talk a little bit about the impact of the gas from this kind of fertilizer plant. >> right. we know a lot about this gas, it's often involved in explosions. when crystal meth labs explode, that's ammonia. what it is, if you get a huge big whiff of it and are you exposed to it a lot over time, even quickly it can kill you. however, if you don't get too much of it, get out to the fresh air quickly, you can be perfectly fine. it really depends on how much you breathe in. listen to the press conferences. it seems like they are more dealing with the results of the explosion, not so much the results of the gas inhalation. >> the debris and the material that exploded. >> that's right. >> causing serious physical harm to a lot of people. but not necessarily the gas. not over with by any means. >> no, it isn't. we don't know how much this gas has dissipated. so the explosion itself, burns some of it up, which is a good thing. and wind can take it away, and certain

elizabeth cohen joining us to talk a little about what do we mean by this, this compound in red meat? >> it's a compound i think most people haven't heard of. it's called carnitine. your body metabolizes it into something called tmao. when they looked at adults, they looked at human beings, they said, wow, people with high levels of tmao are more likely to die of a heart attack or stroke. and when we give carnitine to lab rats, their arteries get clogged. >> so should people be eating less red meat? is that the conclusion of all this? >> this is not a proven cause and effect. the folks who make these products say, look, no one thing is going to cause heart disease. it's genetics, it's a bunch of things. this is what the meat institute has to say. the meat industry says this should not prompt any dietary changes and consumers who enjoy red meat should continue to do so with confidence. however, there are some doctors that say this is yet another reason to limit your consumption of red meat. if this makes you nervous, don't eat it. one of those things everybody has to decide for themsel

i want to bring in our senior medical correspondent elizabeth cohen. you've done some checking on this facility at the prison. what are the capabilities that th have? ande, the are medical facilities in prisons all over the country, but there are only six facilities like this one. we're talking several hundred inmate patients, six physicians on staff, 60 doctors -- i mean 60 nurses rather. 24-hour care. so this hospital can do quite a bit, but let's talk a bit about what it can't do. it can't do big surgeries. when you look online, they do not have an accredited intensive care unit. and i think that says something about tsarnaev's condition. when he was released as far as we know he was in fair condition. so they obviously felt comfortable sending him to a facility that wasn't as sophisticated as the beth israel but still could give some level of care. >> right. elizabeth, appreciate the update. thank you very much. there's a lot going on throughout the day today. much more coverage from boston ahead. we're also going to get a look at some of the other

. >> and now i want to bring in elizabeth cohen. i know you have the story of two nurses who were really the first on the scene that ran in to help the injured. obviously chris is going to be joined by them, but what was their story? >> these two men are both nurses with decades of experience. they said nothing prepared them in many ways for what they saw. they were in the tent near the finish line when they heard the explosions. one of them has served in iraq. he said when he ran out there to help, it looked like iraq. they saw people with limbs blown off, they saw people whose abdomens were opened. they rushed these people into the tent. they said that everyone worked so well together. all the positions and all the nurses, they worked on dozens of patients trying to get them into ambulances and out to local emergency rooms. >> chris? >> thank you very much. i'm here talking with steven and jim. you're there, you were there to help the elite athletes, thinking you're going to deal with cramps and dehydration. what happened, steven?

i know the woman who lives next door told our elizabeth cohen that in fact no one had checked around her house this day. but it turns out that one person going out for a walk spotted him in that boat. and really it was -- it was just after they had been made an announcement that it was okay for everyone to be out in the street. but still to be very, very cautious because it was still a very dangerous situation. and it was only after that that drew reported hearing those two dozen gunshots. and our producer, as well, david fit patrick, and everyone went sailing down the street quickly. and that's when the whole thing unraveled. >> unraveled. and what was amazing is some of the earlier reporting, brian, our deb feyerick, was saying they believed him to be in a structure. this is how they were saying it as the news was breaking. a structure that he could have had access to without having help from an aaccomplice or anyone else. i know that that's still an open question that they're trying to determine, if anyone else at any point was involved. but you have to think, brian, of how those

>> reporter: well, i've been talking with our medical correspondent elizabeth cohen and she tells me that essentially this means doctors can decrease the sedation for a few minutes to a few hour so is that doctors or authorities would be able to communicate with the patient. we've seen this before it in other cases and it appears now that we're hearing from colleagues gloria borger and fran townsend that he's communicating with investigators, it appears the sedation holiday has been used. typically what happens is the patient is pretty out of it, but they're able to understand what's being said to them and they're able to communicate through writing. so again it appears that this is what's been happening in this case. wolf. >> security obviously very intense over there at the beth israel hospital. pam, we'll get back to you. the boston police commissioner ed davis believes the bombing suspects were planning in fact another attack. davis spoke just a little while ago with john berman. listen to this. >> the two suspects were armed with hand guns at the scene of the shoot-out. and ther

elizabeth cohen joins us now. elizabeth, you hear what we're talking about. well, people are just injured. they must be okay. no, not at all, right? what is the severity. what is needed to make sure these people can leavehe hospital. >> chri t severity as you said. u can't stay enough about how bad these injuries were, and what heroes these first reonrswe. son the hospital right now, about 1 ople, 17 ofhe critically injured. amputations have been very,ery common. more than 10 amputations. you can see tt a lot of them are centeredround ms genera bh israel, boston medical, tufts medical center, a part of boston university. rs o the scene at the time of all of this happened. and they told you, look, we' stabilized folks, gothem to ambulances, but we know they have a long road ahead of them. let's take a listen to what nurses said last night. >> i treatedoth double amputee, a young cldndls a young woman in a cardiac arrest. i tnk t- the best snario was that everyone turned from a, you know this is a marathon, we're going to treat am, dedratio fro that to all of a

elizabeth cohen. >> there's a big question that needs to be answered. when you have what's called a micropremie, lot those babies need oxygen. how much ox subsequent do you give them? that's the big question. here's the problem. if you give too much oxygen, high levelings of oxygen can cause blindness. if you give low levels of oxygen, that can cause death. what knee oh nay toll gists do with each individual baby, they see what they need and give them what they need and hopefully no more because it could cause blindness. they say, you know, we don't know what the exact amount is right one half is going to get a relatively low end of the range and the other a high end. we're going to randomly choose who gets relatively high levels or low levels of oxygen and what public citizen says that's unethical. you should be see what they actually need rather than ass n assigning them. >> when you hear about the risks, how could they not tell the parent? >> that's the part that the national ens substitutes of health is upset about. the nih wrote a letter to the doc

senior medical correspondent elizabeth cohen joins us now. elizabeth, you hear what we're talking about. well, people are just injured. they must be okay. no, not at all, right? what is the severity. what is needed to make sure these people can leave the hospital. >> chris, the severity as you said. you can't stay enough about how bad these injuries were, and what heroes these first responders were. so in the hospital right now, about 144 people, 17 of them critically injured. amputations have been very, very common. more than 10 amputations. you can see that a lot of them are centered around mass general, beth israel, boston medical, tufts medical center, a part of boston university. and you i both spoke to two nurses on the scene at the time of all of this happened. and they told you, look, we've stabilized folks, got them to ambulances, but we know they have a long road ahead of them. let's take a listen to what nurses said last night. >> i treated both a double amputee, a young child and also a young woman in a cardiac arrest. i think the

we will talk about elizabeth cohen, the case in front of the u.s. supreme court later this morning. fascinating. >>> history at the masters for the first time ever in australian put the famous green jacket on. >> greg scott or adam scott winning a heart stopper of a playoff. adam scott, you'll remember was the guy who just blew it with an epic collapse of the british open last year. this was no collapse this time, though. the masters win totally going to help him heal. cnn rachel nichols reports. >> reporter: back in 1996, 15-year-old adam scott skipped school to watch his hero norman at the masters. he blew the lead and scott sat in front of the television crying. 127 years later he became the first australian to win here and he told me how the seeds of this victory were planted that day in front of the tv. >> that was hard to watch for sure and, you know, a whole nation stopped that day and felt for greg. you know, it was just so hard to see your hero not come up with the goods that day like he normally always did, but, you know, i learned lessons out of that day and, you know, it

i spoke with our medical correspondent elizabeth cohen earlier this morning. and she tells us that if doctors or authorities really wanted to talk with him, they can decrease his sedation so that they would be able to communicate with them and that he could perhaps communicate with them in writing. because you have to remember, there is a tube down his throat. he's still on a breathing machine. but with the sedation holiday, apparently patients are still pretty out of it but they are able to understand what's being said to them. this could last anywhere from a few minutes to a few hours. john? >> all right. pamela brown with us here in boston this morning. i want to bring in former cia analyst peter brookes. he's a former analyst for the cia, as i said, also with the defense department. thank you so much for being with us this morning. i really appreciate it. and, peters, here's the question, we know that the suspect is sedated. we know that he's intubated with injuries to the throat. if there is communication going on, we can presume it's probably by writing.

elizabeth cohen is with us here right now in boston. elizabe elizabeth, we were listening to that news conference in the hillcrest medical center describing the condition of these patients as they were coming in. one of the interesting things we heard is that early in the night, this explosion happened around 7:30 local time right there. early in the night they were seeing irritation in the eyes which to me sounds like a chemical issue there but they weren't seeing that all night long. >> what's going on here it appears to be the release of anhydrous ammonia. and anhydrous ammonia is a chemical that is used in fertilizer. when it releases the effects can be anything from irritation to the eyes, nose, throat, you get into fresh air and you're fine. that's that is if you don't breathe in a lot of it. if you breathe in a lot of it you can have the issue of severe irritation or even death. so, for example, this is some of the chemicals released from the other explosion in the 1980s. so it's been released in nevada before, it's been released

. >> elizabeth cohen joins us right now. everyone talking about this case from the legal community to the medical community like it's a really, really big deal. so what is at issue? >> it is a big deal because it has to do where what's inside all of us. we all have genes. and those genes tell our bodies how to function. we all have the so-called breast cancer genes. luckily most of us are normal and we're fine, but some people have an abnormal version of the gene. so this company called myriad in utah, they patented these genes. they said, well, yeah, they're in everybody, but they're ours. we own them. so what that means is that only myriad can make the test to detect the genes. they have a monopoly on this test. a lot of doctors and a lot of patients very unhappy with this. and today the supreme court justices get to decide can a company hold a at that time tent on something that's inside all of us. >> so that's the sort of intellectual argument. can a company own effectively a piece of you. how important is this, though,

okay, elizabeth cohen reports that the fbi is coming out of the suspect's home right now. pretexturaly we have to figure out what that means? elizabeth, can you hear me? what's going on right now? >> i sure can hear you. a dozen fbi agents with rifles just came out of 410 norfolk street, the address of the man they are looking for. they had assault rifles. they did not have anyone with them. they have widened this crime scene area, it was a lot smaller literally five minutes ago. pushed back all the media, pushed back all the residents and really about a half an hour or so ago, evacuating residents, som some coming out with their pajamas. a dozen fbi agents came out of 410 norfolk street where the suspect lived. back to you. >> elizabeth. thank you. stay in the loop with us. something to keep in mind at home. a lot of excitement when something like this is going on. a lot of random activity. no way to know what is important and what is not. the nature of continuous coverage, we'll tale you what we learn as we learn it. do not read into it. the ethnicity of the two suspects

as far as precisely whether or not they lived in this apartment, elizabeth cohen here in cambridge talked to the neighbor, so according to this neighbor, yes, they did, in fact, live in this particular apartment building here on norfolk street in cambridge. >> okay. we also now heard reports that the older brother, 26-year-old tamerlan who was shot and killed earlier in the early hours this morning, that he had a wife or girlfriend and also a child, a 3-year-old child. do they also live in that address or, and, again, if we don't know, we don't know. >> i asked the exact same question of people who knew dzhokhar, they knew of the brother, but they had no -- i asked about the wife and the daughter and they had no idea he was married or had this child at all. >> okay. so as far as you can tell, we don't know whether a controlled explosion has occurred or whether they have decided not to do that at this point, right? >> we do not know. but i think the fact they're allowing a lot of these families who have had babies out here on streets for many, many hours, they are letting them back into th

elizabeth cohen, thank you so much. and we're here in boston getting new information including new information on how exactly these two suspects detonated the bomb a week ago monday just a block away from me on boyleston street. deborah feyerick has that information and will share it on the other side of the quick break. c [ female announcer ] everything that goes into a lennox system is engineered for comfort. like parts that create your perfect temperature and humidity or the parts that purify the air. together, these parts can cut your heating and cooling bills in half. which is quite comforting. and here's the best part... call now to get up to sixteen hundred dollars back or 12 months deferred interest on select lennox home comfort systems. offer ends june 14th. plus download our free lennox mobile app with an energy-savings calculator. ♪ if your current system is 10 years or older, start planning now. and take advantage of special financing. so call now to get up to sixteen hundred dollars back. or 12 months de

. >> just, let me get in there for a second, not to worry people, we reported earlier that elizabeth cohen outside brigham and women's hospital said that police officers told her there may be an evacuation. employees are now being allowed back into the building. so whatever that threat was, and as anderson was saying often things are called in around -- surrounding events like this, that are cruel jokes or just, you know, wrong calls, and so people getting back into the hospital, in cause for threat there. >> i think it is a general policy from a reporting standpoint, not a big believer on reporting on things like evacuations because it seems to encourage other people, and it happens so often and -- >> they really do, they really do happen often. no one pays attention until after. one of the aspects of the of the 9/11 world is there is so much noise and i remember going into government -- back into government for the first time and you just sort of react every time there is some situation to report, and then after a while you're able to read through them and sort of get which ones ar

steve cohen. a huge story on friday. elizabeth macdonald joins us. i guess the question is steve cohen next? liz: we are hearing that he is the subject. he has now been charged with any civil cases so far. what we are hearing this hour is there is an intense focus on the e-mails that were exchanged and the firm. take a look at these e-mails. this came within days of the earnings reports. i have a second hand read someone at the company. be extra sensitive with the info. please keep the dell stuff especially on the down low. yes, normally we would never divulge data like this. please be discreet. he was talking to steve cohen about dell earlier today. nine current and former executives at sac capital being connected to insider trading. for our cooperating. we do not know if there will be any charges. when you take a look at what the f ti is saying about steinberg, steinberg was that the center of an elite criminal club were cheating and co-option on corruption was encouraged. back to you. connell: you. north korea's leader says he will build up that e