but this isn't made out of kevlar.ually made out of a fiber called polyethylene, which is 15 times stronger than steel and also 40% stronger than kevlar. >> that's a great idea, janet, quickly, that we need. don't give these kids guns in schools. it's complete madness to arm kids in schools. but to give them one of these as a prevention against possibly being shot seems to me a great idea. >> well that and also teach our kids how to be more empathic and have compassion and bring on family values so we don't even have to deal with these crazy issues of kids feeling like they have to resolve a conflict with a weapon. teach them how to communicate and spread love with each other. >> totally agree with you. thank you both very much indeed. >>> michelle obama gave a speech in chicago today talking about the gun death of hadiya pendelton. could the first lady help to turn the debate on guns? so...how'd it go? well, dad, i spent my childhood living with monks learning the art of dealmaking. you've mastered monkey-style kung f

also, viseen tactical teams, armed to the teeth with the m-fours at the ready, kevlar helmets and one of the things that was interesting. the police are backing us up. one of the police officers backed us up and he said to my producer, he said, you have to get out of here, we are talking military grade. it took us a second -- military grade -- meant military-grade explosives and armament. again, we go back to the idea, we can't make the connection between the vehicle that i thought was the command unit is the bomb squad unit, pulling in front of me. we saw the bomb squad robot, here on the scene, further confirmation that the you have the heavy armaments, heavy explosives on the scene and the police are trying to figure out a way to deal with t. we cannot make the connection that this is somehow related to the boston marathon bombings. but everything is absolutely inconsistent -- not everything -- the heavy armament is inconsistent with something that would have been a simple robbery or a -- or an officer shooting case. these guys are armed to the teeth by every indication, what we ar

you're getting a kevlar wrap or getting water as fast as you can. so where did you go? what did you do? >> well the officers started to whisk us away from the danger and towards the other end of boylston street so we walked down towards boston common in a brisk manner. as soon as we got out into the public. we were dispersed. it felt great to be away from where the harm was, but a little lost, frankly. a little disengaged and not really knowing what to do. i went directly to my hotel and which is not far, thankfully and spent some time watching the news and getting updated on what had happened. >> susan davis, you were there as a spectator with family, with friends. tell me where you were and what you saw. >> i had actually watched part of the marathon in the morning. had gone to the red sox game, they play every and said there had been a couple of explosions by the finish line. and i knew that we didn't have any reporters on the ground here. so we turned around. got as close as we could. never actually saw the site of the blast. butdy get near the medical tent where th

team members in a full kit of kevlar. they would be wearing helmets with nods clicked down. the night vision lenses. looking for all the world like a military assault team for their own protection. rather than illuminating the scene they can go ahead and use night vision. looks like daylight to them, but not to the suspect. they have the upper hand and the advantage. i think perhaps more than a can of gas on the boat, the greater danger is possibly explosives that may be on or with the suspect as we have been saying the most hunted man in the nation. lester holt, we are looking at this -- i feel sorry for the folks for their privacy. we are look at the google earth picture of the house. it's a daylight picture showing the trailered boat along the side yard. >> yeah. one of the fears, we understand, is they believe there is a full tank of gas on the boat. i'm not sure if it's diesel or not. you were talking about how he might have made the escape. number one the chopper wasn't up during the early hours of the morning because the ceiling was too low. they didn't have that heat

it did get fairly warm, too and they're wearing full armor, full kevlar, them when we saw them startto leave you could almost see their shoulders sag a little bit, i suspect both out of frustration and disappointment that they hadn't gotten the man yet. probably just weariness. well, they started to saddle up, as they say, take their cars out of here. as soon as the reports of the shots being fired happened they turned around, they came squealing back here as if they hadn't been working the field all day long and the yards and streets trying to find these people. the energy level shot through roof here and that obviously indicates just how desperately and deliberately and determinedly they are trying to find this individual. so if there's a group that has determined this is the real thing, i guarantee you if those people over there standing here, do road e eth flashing lights they want to get the job done. >> pelley: john is this this exact same neighborhood where we have been watching this house-to-house search all day long? >> yes, that's part of it. dexter street was one of the ar

any dna, fingerprints, kevlar residue and anything else to find out the source of the explosive and built it and where it came from. >> and where to find information like that, little pieces of information, how do they go about tracing it back? >> they can actually recover as much of it as they can and recreate and actually -- if it's a pipe bomb, they can actually get enough fragmentation and rebuild it and put it together, identify the size of it, possibly the manufacturer, then go back to the sources where it was purchased. all that is pain stakingly done by the teams on the scene. >> and what you've seen from the explosions and we've had this report from pierre thomas of two portable devices according to federal law enforcement officials, what does that tell you about what might have happened here? >> from what i could see in the video, i haven't had a clear view of the exact location, but the device if placed up against the building, the building enhanced the blast by pushing it out towards the crowd that was facing the runners. it appears to me that from the smoke and fireball that

many of whom i'm sure to have been wearing kevlar sbess.it can get there, how are we going to protect events? >> that's the point. i've been thinking about my children and grandchildren. you have to go and worry about a device being detonated. that's the price of freedom. so many of these demented people can find on the internet and ability to make a woman and get information for whatever demented or twisted kauds they have in midnight. >> sad note to end on. a sign of our times. tom brokap frw from our washing news room. as we near the end we want to remember efb what we said at the start. this is always the best day of the year. in boston, a global storting event, a chance for a great city to welcome the world. that's not how it turned out. today backs part of the city, our most- 9/11 era. here is how it played out. ♪ >> guys, guys. no way. go back. >> up with of the scariest things i've witnessed in any lifetime. >> you just saw chaos. >> one of the first things i thought is we got to get out of here. i thought that more was going to hap

kevlar helmets off., but it was an interesting situation. it was definitely a change in mood here that may or may not indicate that there has been a resolution. i don't want to go too far on that, but it was an interesting exchange here. >> thank you very much, don. as we wrap things up here, this has been an extraordinary morning. we do not yet know where the suspect is, and we do not know what information they have as to -- that might lead them to him. but we have seen an extraordinary unfolding of the events that looked like they may be going to the final stage. >> let's hope that's the case. that the level that this has created and also, though, the resiliency, the superb coordination among law enforcement, public cooperation, an horrific event that is really moving forward in a way that i think as a nation, it certainly is an area, a profession probably associated with this being so much to be proud of in the sense of how we've come together around this terrible tragedy. and hopefully it will come t

we have no protection getting across that danger zone so we had a kevlar shield up in front of us and we all lined up in a stack behind that shield to cross that danger zone. >> were you thinking you're going to have to go into the boat to get him out or was your understanding he was going to come out? >> it was our understanding that he was giving himself up and he was sitting on the edge of the boat with one leg hanging over the side. >> when you first saw him what did you think? >> this is the target. this is the job. we're almost done with this and let's do it. you know, let's just do what we're trained to do. you know, this is the suspect. we're trained to go in and apprehend him. you could see one hand was clear. each time he went back his hand went down inside the boat out of our view and i know everybody here, we've spoken about it, each time he did that we had to assume that he was reaching for either a weapon, a firearm, or some type of explosive ignition device to try to draw us in and then take us out in a suicide-type manner. he did that a couple of times as we were still

the marshals came out armed with m 4's, with kevlar vests and helmets, at the ready. employees came streaming out. clearly some scare had taken place inside of that building. despite the fact that we're hearing from our justice department correspondent that this bomb scare was nothing but a prank. we have soon the fire department with the full bunker gear streaming inside of the federal courthouse with breathing apparatus inside of the federal courthouse. that again speaks to the tension here in boston. despite the likely fact this is a prank, you have to take everything seriously, all things considered. >> neil: be safe yourself. mike tobin outside the courthouse. former cray operative, wayne simmons, obviously a lot of confusion today and i'm wondering if a lot of it has to do with so many agencies competing in this -- compete not guilty this investigation. obviously the goal is the word with each other. but sometimes one or the other preempts the other, right? >> i think that used to be the case. i think this is more likely the press trying to preempt one another.

. >> the investigators in bomb suits that are 100 layers of kevlar, weigh about 100 pound apiece.ing through remnants of the device with the idea that there still may be explosives in the area. that's why they're fully encapsulated. if you noticee, you'll see an object blue in the center. that blue object is sitting in the seat of the explosion. it wasn't there at the time of the explosion. may have been pulled into that hole by a negative blast wave after the initial wave went outward. there's a negative wave that pulls objects back into the scene of the explosive. >> kevin, what is it -- we also see a very dark mark that seems to be on the sidewalk. why is that significant and why would investigators be looking at that mark on the sidewalk? >> that's a thermal burn mark caused by the thermal ball that you saw in the explosive video, followed by the smoke cloud going upward with white smoke. but on the ground you'll also see in front of the two windows about 20 feet across and 2 feet from the building line outward toward the curb, a white substance. >> yeah, we see it. talk about

we had a kevlar shield in front of us and land up in a stack to cover that danger zone. >> were you thinking were going to have to go in the boat to get him out or was it your understanding that he was going to come out. >> it was our understanding he was giving himself up. he was on the edge of the boat with one leg hanging over the side. >> when you saw him what did you think? >> this is the target. this is the job. we are almost done with this and let's do what we are trained to do. this is the suspect. we are trained to go in and apprehend him. you could see one hand was clear of any weapons but each time he went the other way his hand went inside of the boat out of our view. i know everybody here -- we've spoken about it. each time he did that we had to assume he was reaching for a weapon, a firearm or some type of explosive ignition device to try to draw us in and then take us out in a suicide-type manner. he did that a couple of times as we were still approaching towards him. we got close enough that at one point where both of his hands were up because of the rocking back and forth, b

any dna, fingerprints, kevlar residue and anything else to find out the source of the explosive and built it and where it came from. >> and where to find information like that, little pieces of information, how do they go about tracing it back? >> they can actually recover as much of it as they can and recreate and actually -- if it's a pipe bomb, they can actually get enough fragmentation and rebuild it and put it together, identify the size of it, possibly the manufacturer, then go back to the sources where it was purchased. all that is pain stakingly done by the teams on the scene. >> and what you've seen from the explosions and we've had this report from pierre thomas of two portable devices according to federal law enforcement officials, what does that tell you about what might have happened here? >> from what i could see in the video, i haven't had a clear view of the exact location, but the device if placed up against the building, the building enhanced the blast by pushing it out towards the crowd that was facing the runners. it appears to me that from the smoke and fireball that

most of the police officers you see with the bright green vests are also in this day in edge wearing kevlar vests, so let's hope there are boston pd members who were able to survive this and help by that. but it's something to think about. maybe it made the difference in a few cases. this is patriots day in the city of boston. commemorating lexington and concord. this was the day of a red sox game. fenway park is about a mile and a half away from this closest intersection that we're talking about here is boyleston and dartmouth in boston. we had a picture across the charles river showing the smoke plume from this -- these duel explosions. again, no one has said anything official. it will take forensic testing of the residue from the explosion, but there are certain accelerants and certain explosives that will immediately tell investigators this was not a gas main. this was not a kind of naturally occurring explosion from the systems contained in a large american city. this was say -- an explosive that was put there to do harm. we don't know that yet. it is just -- quite a coincidence otherw

>> the investigators in, bomb suits, 100 layers of kevlar, 100 pounds apiece, they're searching for represent there may be in the area. fully encapsulated. also see an object blue in the center of the picture. the blue object is sitting in the seat of the explosion. it was not there at the time of explosion. may have been pulled into the hole by a negative blast wave after the original explosive wave went outward, a negative wave pulls objects back into the scene of the seat of the explosion. >> kevin, what is it that they're, and we also see a very dark mark, seems to be on the sidewalk, why is that significant? why would investigators be looking at the mark on the sidewalk? >> that is a thermal burn mark caused by the thermal ball that you saw in the explosive video followed by the smoke cloud going upward with white smoke. on the ground you will see in front of the two windows, about 20 feet across and 2 feet from the building line outward toward the curb, a white substance. >> yeah, we see it. talk about it. what are we looking at in your opinion? >> my opinion, that may be unexploded ter

most of the police officers you see with the bright green vests are also in this day and age wearing kevlar vests. let's hope there are boston pd members who were able to survive this and help by dint of that. but it's something to think about. maybe it made the difference in a few cases. this is patriots day in the city of boston. commemorating lexington and concord. this was the day of a red sox game. fenway park is about a mile and a half away from this. closest intersection, what we're talking about here, is boyleston and dartmouth in boston. we had a picture across the charles river showing the smoke flume from this, these dual explosions. again, no one has said anything official. it will take forensic testing of the residue from the explosion. but there are certain axel rants and certain explosives that will immediately tell investigators this was not a gas main. this was not a kind of naturally occurring explosion from the systems contained in a large american city. this was a -- an explosive that was put there to do harm. we don't know that yet. it is just quite a coincidence otherw

increased steadily over the past half hour, about 15 minutes or so heavily armed fbi agents with their kevlar vests on, long rifles came barreling down the street and police were yelling at the press and pedestrians to move out of the block. that was a dramatic increase from what we've seen in the past few hours. we're in east cambridge, a working class neighborhood, authorities believe that one of the suspects lived at 410 norfolk street here in cambridge. early this morning police began evacuating neighbors around that house. one of those people who was evacuated is joining me now. his name is lawrence ruff. >> good morning. >> walk me through what happened this morning. it was a normal morning and what happened? >> i was watching the news and all of a sudden there was police on my street. i looked out the window. two suvs first and a couple of tv crews in the corner and then like not even five minutes later all kind of s.w.a.t. teams and fbi agents converged on my street and i came outside. tried to go to the store and go back inside. they said, no, we're going to evacuate the whole street

the rumble of the ground shattering windows, hiding in their flak jackets and kevlar helmets a lawyeror the broken windows wait until we come to a hospital. watching the black helicopter with the big red cross on the side lending and our paths, were still watching great marine helicopters landing in the pants because there were filled with patients and often we did not know they're coming. ushering a sobbing marine colonel away from the trauma but while he listened to his marines crown and pain, meaning a 21 year-old corporal with three purple hearts and listing to him weep because he was ashamed of feeling afraid to go back to the telling a room full of stunned marines and blood-soaked uniforms at the conrad they tried to save had just died of his rooms, washing blood of the boots of waterbury and nurses will she tell me about the one who died in the troubled bank and of the one she had to tell when he pleaded for the truth that is printed and make it. listing to another and varnishes tell of a marine that came in talking telling her his name, about how she pleaded with him not to gi

the rum of the ground, shattering of the windows, hiding under flack jackets and kevlar helmets, waiting to be told we could come to the hospital. watching the black helicopter with the big red cross on the side landing on our pad. worse, watching gray marine helicopters landing at our pad. because they were filled with patients, and often we didn't know they were coming. ushering a sobbing marine colonel away from the traumatic bay while he listen to his marines cry out in pain inside. meeting a 21-year-old corp recall with three purple hearts and listening to him week pause he was shamed of feeling afraid to go become. telling a room full of stunned marines in blood-soaked uniforms that their come raid had just died of his wounds. washing blood off the beats a young nurse while she told me about the one who died in the trauma bay, and then the one she had to tell when he needed for the truth. that his friend didn't make it. listening to another of our nurses tell of that marine that came in talking, telling her his name, about how she pleaded with him not to give up. but she could see

splitting open against direct, the rumble of the ground shattering windows, hiding under flapjack and kevlar helmets away from a broken windows, waiting to be told we could come to the hospital. black helicopter with that big red cross on its side landing in our path. worse, watching gray marine helicopters landing at our pad because they were filled with patients and often we didn't know they were coming. assuring a sobbing marine colonel away from the trauma they and all you listen to is marines cry out in pain, meeting the 21-year-old corporal with three purple hearts and listening to him weep because he was ashamed of feeling afraid to go back. telling a roomful of stunned the marines in blood soaked uniforms that their comrade they had tried to save had died of his wounds. watching a lot of of the boots of one of our young nurses while she told me about one who died in the trauma they and the one she had to tell when he pleaded for the truth that his friend didn't make it. listening to another of our nurses tell of that marine who came in talking telling her his name, about how she plea