sunday at 9:00 p.m. eastern right here on cnn. make sure to follow me on twitter. we also have a facebook page you can check out. turning you over now to wolf blitzer. he's right next door in a place we call "the situation room." have a great weekend. happening now, breaking news. american bomb plot. a u.s. man who enlisted in the u.s. army is arrested for allegedly trying to carry out a suicide car bombing in a major u.s. military base. we are learning new details of his pledge to wage jihad for isis. isolation. the former south carolina police officer charged with murder is now separated from other inmates for fear he could be harmed. we have new information about the case that shocked the nation. wiped off the map. total destruction as the town is leveled by a tornado, leaving multiple people dead and injured. did early warning systems save lives? i'm wolf blitzer. you're in "the situation room."

let's get right to the breaking news. today's arrest heading off what federal officials call a suicide bomb plot targeting soldiers at a major u.s. army base. the suspect is a 20-year-old american who authorities say was inspired by isis. according to court documents, he was plotting to kill as many u.s. soldiers as possible by detonating a car bomb at fort riley, the kansas home to the u.s. military's acclaimed first infantry division. we are bringing in the chairman of the house foreign affairs committee, republican representative ed royce, to take our questions. our correspondents and experts have been working their sources. they are all standing by to bring us the latest on this story and all the important news breaking right now. let's begin with the very latest. our justice reporter evan perez is standing by. >> john t. booker 20 years old, was arrested today as he was preparing, making final preparations to carry out a suicide bombing at fort riley, kansas.

according to the fbi, booker who also goes by the name mohammad abdullah hasan, had been preparing to do this since last year. he posted on facebook got on the radar of the fbi last year when he posted on facebook i will soon be leaving you forever, so good-bye. i'm going to wage jihad and hopes that i die. according to the fbi, he first signed up for the army in february of 2014. afterwards he made these facebook postings. the fbi came and spoke to him and interviewed him. he said yeah i want to kill u.s. military members, whether here or overseas and i want to do it for al qaeda. later on the fbi introduces him to a couple of informants and he lays out plans to carry out this suicide mission for isis. he recorded a couple of videos right before this plot was going down just in the last couple of weeks in which he declared his allegiance to the leader of isis and said that he was going to do

this warning members, people who had family members inside the military that they should get them out because he was coming for them. >> did he not think that people were monitoring these kinds of warnings these videos or whatever? >> you know, that's what's so shocking about this. he gets a visit from the fbi, again, last march in 2014 and he admits to everything. the fbi keeps looking at him, keeps watching him, and they introduce a couple of informants in october and in march of this year as he continues to make his plot. so it leads us to ask the question whether everything is right in his head or perhaps he's just not a smart guy, that he didn't think the fbi was going to be on to him. >> he formally converted to islam when he was inspired by online social media material, is that right? >> that's right. in the presence of the fbi informants he was looking at some of these isis videos. he said he was actually inspired

by an american who goes -- went by the name jihad joe who carried out a suicide bombing in syria and he looked at that video and said he was inspired to do exactly that here in the united states. >> very disturbing information. evan, thanks very much for that report. stay with us. i want to bring in our chief national security correspondent jim sciutto. jim, this is the 21st isis related arrest here in the united states since the start of this year only two days ago madison, wisconsin man was arrested after flying to turkey to attempt to fight for isis. does this number reflect the growing threat isis poses to the united states? because we have heard from a lot of top u.s. homeland security officials, they are pretty alarmed right now. >> reporter: it reflects two things. one, it does reflect the draw of isis not just in the u.s. but in other western countries. it's something that u.s. counter terror officials have consistently told me if not the most capability in terms of attack it's the most likely

attack to happen in the u.s. in part because they are hard to track. they are lone wolves easily radicalized online. it's a real problem and federal law enforcement and counter terror they are going after this aggressively. the second thing this shows is that law enforcement is looking for these guys aggressively and as they do they are going to catch them and as you see in this case, not all of them are necessarily the brightest lights in the chandelier to paraphrase something evan said. he was posting very publicly online that this is something he planned to do and you are going to see that. you are seeing varying degrees of capability and of course the most dangerous ones are the ones who keep quiet before they carry out their attack as opposed to go public. you are seeing two things here. it's a demonstration of isis' reach, its ability to recruit online the draw that it has not just in the middle east and in europe but here in the u.s. but it's also showing that law enforcement is looking harder for these guys and as they do they are often going to find them whether it's by postings online or in sting operations that we have seen recently.

it means in a way that some of these efforts are working. >> it's interesting because the defense secretary, you know this jim, he told our own erin burnett that he feels aqap al qaeda in the arabian peninsula, may be an even bigger threat to the u.s. homeland, to americans than isis. >> reporter: well here's what i hear from counter terror officials. they say the two biggest, most severe most capable threats to the u.s. homeland are aqap and the khorasan group that first came to be known at the start of the u.s.-led air campaign in syria, an offshoot of al qaeda in afghanistan and pakistan that reorganized, in effect in syria. those two have the most capability. they have the most history of attempting to attack the u.s. homeland or u.s. assets overseas. isis perhaps has the greatest chance of attacking here just because we are not talking about complicated plans necessarily directed from home base in iraq and syria. we are talking about lone wolves

like this gentleman at fort riley. read something online comes up with his own plot. that's a lot easier and a lot easier to do. you don't need a lot of resources to do it. you only need one guy. it's also a lot harder to track. in terms of bigger more capable attacks, aqap and khorasan group in terms of easier to carry out attacks, perhaps more threats, it's more the isis or the al qaeda-inspired lone wolf attack. >> stand by for a moment. evan does the fbi think these alleged cases here in the united states represent a real major legitimate threat to the american homeland? >> look the fbi is in a quandary over these types of cases. this guy doesn't look like the smartest guy at all, but the problem is even someone who maybe has mental problems or who is not that smart can kill people. there was a case just a few months ago with a person who had mental health issues and attacked two new york city officers with a hatchet.

again, that's now -- the fbi now says that is the first isis-inspired attack in this country. it goes to show you that if they don't do something about these people they still could carry out an attack. >> good point. all right. evan thanks very much. jim sciutto, thanks to you as well. let's talk about what's going on. republican congressman ed royce of california is the chairman of the house foreign affairs committee. he is joining us live. mr. chairman, thanks very much for joining us. >> thank you, wolf. good to be with you. >> have you already been briefed on the arrest of this kansas man, this individual 20-year-old man named john booker also known as mohammed abdullah hasan? we are showing his picture on the screen. what can you tell us about what's going on? because it's pretty disturbing 21 arrests like this since the beginning of this year. >> what i can tell you is the fbi feel pretty confident at this point that because in the last ten days they have made seven such arrests, that they are doing a good job. they have really picked up their pace in terms of intercepting those who are trying to carry

out these attacks. and the indication from them is that there are now cells or people that they are watching in all 50 states across the country, and at the same time their biggest problem is the dissemination of that messaging out of isis kill the enemy where they are. in other words, carry out the attacks inside the united states. this is the big challenge for the fbi and homeland security. >> the court documents in this particular case say the suspect had enlisted tried to enlist in the u.s. army was due to head out to basic training only a few days ago, on april 7th. is there a concern that individuals inspired by these terror groups like isis or aqap might start trying to infiltrate u.s. military headquarters, commit attacks inside the military? >> well i think there's more investigation of that potential ever since the fort hood massacre and i would add that

there's heightened awareness of what isis is doing online ever since the al qaeda publication, how to make a bomb in your mother's kitchen. since that was used in the attack on the boston marathon, there is now very close monitoring of what isis is putting out. the problem is that this is worldwide, this effort to recruit, and the victories that isis has overseas are inspiring unfortunately young men who read that magazine inspire to make themselves available to commit suicidal acts and this was an attempt at suicide by this young man today. >> yeah. that inspire magazine in english, pretty slick online and the actual title of that article which they repeated several times is how to build a bomb in the kitchen of your mom. they try to be very clever with all of their techniques and as

you know it's not very difficult to get the raw material here in the united states probably legally, to go ahead and build that kind of bomb, right? >> that's the difficulty. that's what the fbi is up against. >> his arrest as i pointed out, is the 21st isis related arrest here in the united states since the start of this year. i pointed out madison, wisconsin man arrested after flying to turkey, coming back, was arrested. we know these radicalized individuals as you point out, they are being investigated probably in all 50 states. how much of a threat do you believe isis specifically isis as opposed to al qaeda, the other terror groups, really pose to the united states? >> well the difference is that isis believes in mass attacks on civilians. when you're looking at al qaeda, they have a strategy of trying to be strategic, trying to maximize the damage done on an institution. for example, an attack on the

world trade center would be typical of the long term planning that would go into an operation of al qaeda. their bomb making capability is second to none. certainly al qaeda in the arabian peninsula has shown that aptitude. that's why yemen is such a problem right now, because that is where their bomb makers were housed and for them and the khorasan group, they now have free rein, unfortunately. many have been released from prison as a result of the prison breaks since the government fell. our ally our allies in yemen are now removed from the equation. these are the concerns we have about al qaeda right now. >> the defense secretary ash carter says it's a huge and growing concern. i want to pick that thought up as soon as we come back. mr. chairman stay with us. we will take a quick break. much more right after this.

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word. ...to your mother did you call your mom? i should probably call her... you should probably call her. it's her birthday. we are following the growing terror threat new concerns tonight about al qaeda plots to attack right here in the united states after disturbing remarks by the defense secretary, ash carter in an interview with cnn's erin burnett. he is now saying al qaeda in the arabian peninsula is growing, becoming more dangerous, because of the situation, the disastrous situation unfolding in yemen. we are back with republican congressman ed royce of california. he's the chairman of the house foreign affairs committee. you agree with ash carter that

al qaeda, aqap al qaeda in the arabian peninsula, has a freer hand to do destruction and damage. >> the reason they do is because they seek a situation in which you have got a stateless society. now that president hadi has been run out of yemen and his army has collapsed, this gives them in the south of yemen not only this ability to go back to staging attacks, but the united states was on the ground with our closest anti-terror ally there along the red sea, now we're gone. so there's no one basically able to keep them at bay and many of their allies have been freed from these prisons, so yes, they are on the mend. they are building their operations and this is of grave concern to us. >> let's talk about the iran nuclear deal. some are suggesting it could be on life support right now. do you think it's still alive potentially or is it dead? >> you know it's hard to say because there is such a distance between what the iranian officials are saying in the

document and you see the assertions not just of the chief negotiator and the president but also of the ayatollah himself that say look in our document we don't see that this constricts us you cannot have from our position you cannot have the ability to go into any of our military sites and have inspections there or have snap inspections. on top of that they're saying that the sanctions have to be lifted immediately and that nowhere in the document does it say they're phased the lifting of the sanctions. so this is very different than the interpretation that the administration has given, and the release of those documents will be interesting, but also important here is the attitude we're seeing out of the ayatollah, because once more yesterday, as he spoke to this issue, he led the audience in chants of death to america. so this is repeatedly gone on

week after week and you would think that in the middle of negotiations he would -- he should pull back a little bit from the threatening behavior to say nothing of the fact that his forces are now in yemen overthrowing another government. so his conduct has really been extraordinarily aggressive. >> so when administration officials say it's bluster for domestic consumption in iran he's trying to appease hard liners if you will don't take it all that seriously, you say? >> i say he has said they're going to mass produce icbms and we know right now they're mass producing three stage icbms and we're informed that as soon as next year they will be able to target the western hemisphere i would say we have a problem in this given the fact that in the past i have seen those rockets go off, as you have in the

middle east against israel that were built by iran. they don't seem reticent about using their inventory. i would say we really need to do something in this negotiation to make sure they don't have a fleet of these icbms and undetectable nuclear breakout capability. if we don't have the inspect tors go in there and inspect the military sites, they won't let anybody in we know a thousand pages of documents that show they were developing a warhead for a nuclear weapon. this really needs to be addressed. >> i want you to listen to what senator john mccain had to say about this back and forth between the grand ayatollah, with u.s. officials, the secretary of state, the president of the united states. mccain spoke at an interview with a radio talk show host. listen to this. >> it's probably in black and white that the ayatollah is probably right. john kerry is delusional. he came back and mind you, i

think you're going to find out that they had never agreed to the things that john kerry claimed that they had. >> the white house press secretary later responded, josh earnest saying mccain's comments calling them naive and reckless. what's your reaction to this exchange right now? strong words from john mccain, calling the secretary of state john kerry delusional. >> well here's the problem. a lot of this has been presented as sort of a negotiation, the broad framework completed, and now we are going to have these technical adjustments over the next few months. clearly for anybody looking at this objectively, there is no agreement on any one of the major four points. there is great distance. so what we will be doing on monday when i return i will be chairing along with eliot engel of new york the members of congress we are going to have a closed door briefing on this

information with the secretary of state and energy and treasury about what the administration perceives is in the deal as opposed to what the iranians perceive is the language of the agreement. there's clearly a conflict of visions and nobody seems to be on the same page. we're going to try to get to the bottom of it. >> your bottom line is the deal is still alive but maybe barely is that right? >> my bottom line is we have to come out, you know my feelings about this, at the other end of this negotiation with the inspection regime such that we can go anywhere any time and i don't mean we have to appeal to the u.n. first to get approval to do it. those international inspectors have to have that right in the document. otherwise this isn't worth what it's printed on. there are other concerns as well but that's the most basic concern right there. nor should we immediately lift all of the sanctions and lose

our leverage on this as the iranians are claiming we agreed to do. >> ed royce, mr. chairman thanks as usual for joining us. coming up a jailed former policeman now accused of murdering an unarmed african-american is put in isolation for his own protection. we will go there with a live update. we are also live in what's left of an illinois town hit by a massive tornado. authorities just confirmed the death of another victim. "ride away" (by roy orbison begins to play) ♪ i ride the highway... ♪ ♪ i'm going my way... ♪ ♪i leave a story untold... ♪ he just keeps sending more pictures... if you're a free-range chicken you roam free. it's what you do. if you want to save fifteen percent or more on car insurance you switch to geico. it's what you do. ♪ two wheels a turnin'... ♪

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breaking news cnn has just confirmed that some new dash cam video that we have just received

from the south carolina police shooting. this is from another officer's car. watch this. you see the man, eventually you will see the man who shot the video that's so disturbing the video of the shooting the killing of walter scott, the 50-year-old individual shot by the police officer michael slager. you will see this dash cam going in there and i'm going to just let it play out. eventually you will see feidin santana shooting that video. we will freeze it in a moment and get it to you. t division has interviewed a key player in that south carolina police shooting.

the man was the passenger in walter scott's car when he was pulled over chased then shot and killed by the former police officer, michael slager. cnn's brian todd is joining us once again from north charleston. he has been working his sources. what's the latest? what are you learning? >> reporter: well you mentioned that that passenger has been interviewed or has met with officials from the south carolina law enforcement division. we do have that confirmed. we have also been told by them that he has insisted that his name not be released so they are not releasing the name of that passenger in that vehicle. also a serious complaint tonight from officer michael slager's attorney andy savage who says that despite his repeated requests he has not received the same kind of cooperation in this case that the media has. he has not gotten investigative documents, audio and videotapes that he's only gotten slager's arrest warrant. we reached out to the north charleston police for response to that. we have not heard back. this comes tonight as you just mentioned that we have just now gotten dramatic new images from

two new dash cam videos. cnn has obtained stunning new dash cam video from other officers arriving on the scene moments after walter scott is shot. you can see officer james gann speeding from a nearby traffic call when he hears shots are fired. here it appears you can see feidin santana at a nearby fence shooting his cell phone video. the key evidence in the murder case against officer michael slager. south carolina's law enforcement division says slager seen here in dash cam video from his police cruiser, has spoken to investigators at least once though it is not clear if the state is referring to this debrief filmed shortly after the shooting. tonight, investigators and analysts continue to pore over that dash cam video and the audio recorded from the wireless microphone officer slager was wearing. the dash cam video shows walter scott jumping out of the car and running. officer michael slager is not seen chasing him, only heard, at one point telling scott to get

on the ground. >> get on the ground now! get on the ground! >> reporter: seconds earlier, slager can also be heard screaming that he has deployed his taser. >> taser, taser, taser! >> reporter: eyewitness feidin santana who shot this video said he heard the sound of a taser. >> the cop was on top of him and he was tasing him. tasing mr. scott. >> reporter: could that sound be a clue to what happened? if you're hearing a taser, someone says they can hear it that's not good because that means it's arcing in the air. when it hits something conductive it goes loud to quiet. you see the difference? >> reporter: it's unclear whether officer slager used his taser successfully or if this image shows what appears to be the taser's wires. cnn has learned officer michael slager is being held in isolation away from other prisoners in this charleston county, south carolina jail. officials would not say if he is on suicide watch or if he has received threats from other inmates, only that he is being

monitored for his mental health. the scott family is holding a wake for walletter scott at this hour. they are planning his funeral tomorrow. >> brian, stay with us. i know you have more reporting. we will be back with you. i want to bring in the community activist john gaskin leading voice during the unrest in ferguson missouri is here with us in washington. our justice reporter evan perez and law enforcement analyst, former fbi assistant director tom fuentes. also joining us from new york our hln legal analyst, criminal defense attorney joey jackson. tom, one of the problems in this kind of situation, we have two eyewitnesses. one of whom says one thing, the other one says something else one says there was a tussle but it wasn't much of a tussle. the other one says they were both on the ground just before the shooting. what do you make of these contradictory eyewitness accounts? >> my opinion, i'm skeptical of the girl that came forward. first of all, if she was a serious witness, call the fbi. they will protect you.

call the state police they will take care of that. to go to the media first is one clue that she might just want the attention. she completely contradicts santana's version and he's the guy taking the video. another reason why i think his version makes sense to me is that when you tase somebody they typically go to the ground for a short time. they are stunned for a few seconds, giving time for the officer to handcuff them get control. when he says they're on the ground together and the officer's on top of him, i believe that because when they're both on their feet which is when the video starts you see scott take off running and you see one of the taser cords still attached to him, stretching as he runs away. the second one appears to be tangled around the officer's arm and lying on the ground. normally when you fire a taser, you would not get tangled in the cords unless they had close body contact and were in kind of a wrestling match. >> evan we are showing the viewers the original video from the cell phone, the very dramatic video, the awful video

where you can see walter scott running away the police officer michael slager shooting him several times in the back and eventually killing him. now we have all this dash camera video as well from the police officers arriving on the scene. i know the fbi, the justice department, they are going to be looking at all of this as they pursue their case potentially, a civil rights case. >> that's right. they already are taking a look at some of this information. they are working with the local law enforcement there. one of the emerging questions that they are going to have to deal with is the question of whether this is a symptom of just one cop or whether this is a broader problem, whether this is a department that uses -- is too quick to use the taser, for instance. those are all questions that are being asked of the justice department the local naacp has asked for a pattern and practice investigation of the department. the department says they are going to review that request, it will take probably some weeks and perhaps months before they do anything about that. >> this is new dash cam video that we have just received. we have been showing our viewers. joey jackson, as we show our

viewers this video, we have also learned new details about the former police officer michael slager's confinement. he is now in isolation. he is under monitoring not necessarily a suicide watch. he's allowed visitors only by video link with the exception of his own lawyers. is that unusual? is it pretty standard in a case like this? >> well what ultimately happens is it's up to the discretion of the person who runs the facility. obviously this is no standard case and every situation is different. now, there are consistent treatment of different inmates, but you know he has not -- remember it's early on in the case. yes, he's been charged. there has not been an indictment yet. he is not certainly confined with regard to being sentenced. so he's going to be treated as he is here under the discretion of the person who runs the facility. if i could just say one thing, though, with regard to the witnesses that we talked about earlier. tom fuentes was talking about. here's why what they're saying may not necessarily be consistent. it's a very important point for

viewers to understand. mr. santana says three very critical things. the first thing is that there was a tussle on the ground. there's some kind of struggle. the second thing he says which is significant is that regarding this tussle what ends up happening is the officer is in control. the third thing that he says is that apparently walter scott ran away for fear of being tased. the second witness says two things. she says there's a tussle. she doesn't witness anything on the ground and then she says she hears no verbal command. which is not inconsistent because on that video we don't hear him say stop i'll shoot. what's important to understand is the witnesses may not necessarily be inconsistent. it could very well be that that second witness, miss nichols, when she observes it, mr. scott is off the ground. witnesses see and perceive things at certain times. at the time santana's recording everything, he sees everything. at the time that miss nichols looks, it could be that he's up that is walter scott, from the ground. so it's not necessarily an

inconsistency. that's something prosecutors will be working with as the defense will be. >> i'm sure they will be. there will be a defense, he's got a defense attorney already. john gaskin according to the atlantic i've got some statistics here there were more than 22,000 traffic stops in north charleston south carolina in 2014, more than 16,700 involved african-americans. that's about 76% of the traffic stops in the city that's 47% black. more than 10,000 of the traffic stops involved black men. does that give credence in your opinion to this charge that there is racial bias that african-americans are unfairly targeted? >> absolutely. as marc morial eloquently put it yesterday, we do need to take a look into the patterns and practices of the north charleston police department. as we see across the country in black and brown communities, they are oftentimes overpoliced. the people in those communities are oftentimes targeted. and oftentimes in those

communities, there is a theory of policing for profit as we saw which was out of control in the city of ferguson it appears that that could be the possibility in the city of north charleston. >> it is important, though to point out that this is a city that's going through some very high crime issues. they have a lot of shootings. this is a police department that's under pressure to do something about that. there's a lot of law-abiding people in this city who i'm sure want to go to sleep at night without hearing gunshots outside. while i understand i think i can see those statistics and the local newspaper had similar statistics that they pointed out as well. i do think it's important to point out why it is that some of these tactics are being used whether they are being done correctly or not, it is something that -- >> let's not forget north charleston which is a different city than charleston south carolina has a population of about 100,000 people. back in 2007 it was listed it was identified as one of the most dangerous cities in the united states. so they have had a lot of work to do to try to make it less

dangerous over these years. i don't know how much success they have had. but i know they are very sensitive to that. tom fuentes, take a look at this video. we slowed it down now. this is video from another dash cam. it's going to show you can see on the left you can see the feidin santana, the individual who took that horrific cell phone video of the actual shooting that was going on. you see he's there, you see the picture of him right there. all of this is going to be evidence down the road right? >> right. what it will do is confirm where the witnesses were how far away what's their view anything obstructing it. we already know santana has a good view because he's taking the video which shows his view. but the other witness that's come forward, any other witnesses that may in the future be identified it will help. they say they are close to it they should come up on these videos that they are close. >> joey jackson, you are a criminal defense attorney. if you were representing this police officer who has now been charged with murder the initial

dash cam video from the initial stop from his own vehicle, does that help him? would that potentially help him avoid the charge being convicted of murder? >> i really don't think so. i think what you're going to see the defense do here is look to the issue of mitigation to bring it down from murder to something else because if you look at the classic issue of murder here i think the principles are met. it's an intentional act. three very brief things. the first thing is you are going to look at the imminency of the threat posed to him at the time of the fatal shooting. how imminent was the threat. if the threat is moving away it presents a problem for a defense attorney. step number two, the proportionality of the force. you are firing eight times at someone who is moving 10 15 20 feet away from you. so clearly it's disproportionate your force, to the threat that's being posed. the final thing is the reasonableness of the conduct that's going to be evaluated, and of course as we look at it i think there's a uniform determination that it's unreasonable.

so you are going to have to question the mindset. also briefly, in the initial encounter, what you look for is how could the state of mind be impacted in any way. he was professional, absolutely. there was a general discussion license, registration which all of us may have experienced before. also walter scott didn't say anything didn't do anything that was overly untoward or inappropriate. so how did he get to the mindset, the defense attorney will have to say at some point that he was acting out of impulse, but that's difficult because the video doesn't show that he was stressed in any way. it seems as though he was standing there and shooting very calmly. it's going to be a concern for the defense. >> there is not video of the part in between the original arrest -- not the arrest the original encounter and walter scott running away then eventually the horrific video in between. we have some eyewitnesses but we don't have any actual video. everyone stand by. we are going to continue the breaking news coverage. we will take a quick break. much more after this.

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breaking news we are following. we have second dash cam video of the south carolina police shooting. this is from another officer's car. the camera shows the man who took the video of the shooting that would be feidin santana. we are back with our experts. tom fuentes, this dash cam video from the various police cars how significant potentially could this be as far as a case of murder against this police officer? >> i think that slager's dash

cam really isn't going to help get him off of a murder charge. i think that the other video is going to be so compelling it's going to be hard to overcome that. but dash cam of traffic stop shows that he acts in a very professional manner. so we don't see at that point any indication of a racial bias or unprofessionalism. he doesn't call scott any racial epithets or anything. i think that in the civil rights part of this, it does play in his favor. >> i assume the fbi, the justice department is going to be taking a look to hear if they hear any derogatory terms referring to this african-american man. >> right. one of the things that i think will be a problem is if indeed these witnesses have differing versions of exactly what happened in the part of this confrontation that we don't have on camera the part where is there a tussle are they on the ground are they standing up that's going to be very key. again, this doesn't really

excuse what we see on camera the shocking video of this officer shooting a man in the back as he's running away. but i think for his own defense, i think they would want to see -- to hear more from those people who can explain what might have motivated this. >> i agree with that. santana's statement that they're on the ground and scott's -- the officer, i mean is on top of scott on the ground and then turn around and make a statement he wasn't going for the taser, he couldn't know that. you couldn't see under them. >> we got to take another break guys. stay with us. there's other breaking news we are following. the aftermath of those massive tornadoes in the midwest.

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more ahead on the south carolina shooting including the dash cam video from a second police car. a second death confirmed in the tornados in illinois. dozens of homes are destroyed. let's bring in ed from illinois. i take it that place was nearly wiped off the map. is that right? >> reporter: devastating destruction we have seen here. the fire chief here in fairdale says tornadoes of this magnitude are not something that they are used to. it took a deadly toll here. there are amazing store rifze inging stories of survival. three adults and three children trop trapped inside but they survived to tell us about it. with terrifying ferociousness, tornadoes ripped through small towns west of chicago. residents in the path looked on in fear.

>> i'm scared to death of storms. so i was watching everything. >> i feel like it's a bad dream, something i would be watching on the news somewhere else not in my neighborhood. >> reporter: one tornado cut a 22-mile path through this illinois flatland. fairdale is a small dot on the map. but a tornado tore right through it. the town does not have tornado sirens. two elderly women were killed and dozens of homes deez ss destroyed. those that survived know how lucky they are. >> it was such an adrenaline rush. everything seemed like it happened in two seconds. >> reporter: he rode the storm out while in this car. you can see it here on the edge of the picture that he took after the storm struck. they were inside an iron workshop. he was inside the car with a co-worker who had raced over with his wife and three kids to seek shelter. moments later the tornado made a direct hit.

>> i remember seeing the roof of the shop starting to come up and down. next thing i know the blocks coming down and beams are falling. luckily, nobody get hurt. >> reporter: they managed to get out of the debris to see this is what's left of the building around them. search and rescue teams have spent the day looking through miles of debris looking for survivors, trying to make sure everyone in the storm's path is accounted for. emergency officials say that work is now winding down. >> we are very confident that we have covered all the areas that needed special attention. >> reporter: wolf you know emergency officials say that throughout much of the region many people had about 30-minute warnings of the storms that were coming this way. the fire chief here says unfortunately in this situation of the two elderly women killed here in this town would not have made much of a difference. where they lived was the hardest hit area of the town.

>> thanks very much. up next major new developments in the south carolina police shooting including new dash cam video. new information about the officer charged with murder. e moderate to severe rheumatoid arthritis like me and you're talking to your rheumatologist about a biologic... this is humira. this is humira helping to relieve my pain and protect my joints from further damage. this is humira giving me new perspective. doctors have been prescribing humira for ten years. humira works for many adults. it targets and helps to block a specific source of inflammation that contributes to ra symptoms. humira can lower your ability to fight infections, including tuberculosis. serious, sometimes fatal infections and cancers including lymphoma have happened, as have blood, liver, and nervous system problems, serious allergic reactions, and new or worsening heart failure. before treatment get tested for tb. tell your doctor if you've been to areas where certain fungal infections are common, and if you've had tb hepatitis b, are prone to infections, or have flu-like symptoms or sores.

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happening now, brand new dash cam video in the south carolina police shooting case. we're seeing critical angles for first time. we're getting new information about the mystery man in the car with the victim. u.s. base targeted. an attempt on a military base. was he acting on the orders of isis. al qaeda versus isis. cnn asks ash carter which is a greater danger to the united states right now in his first major interview since taking job at the pentagon. hillary clinton is in. she sets a date to launch her 2016 presidential campaign. her big announcement that's coming up. we want to welcome our viewers in the united states and around the world. i'm wolf blitzer. you are in "the situation room."

let's get to breaking news tonight. new police dash cam video in the south carolina shooting investigation. it is taken from the patrol car of an officer who arrived on the scene after the initial traffic stop. we're seeing for the first time a glimpse of the man who recorded the shooting while he was using the cell phone, showing the police officer michael slager shooting the suspect in the back while he was fleeing. also breaking investigators now confirm that they have questioned the passenger who was in scott's car. we're told he has been released. he is not facing any charges. the head of the naacp, there he is he standing by to join us live. we have our correspondents and analysts they are standing by. we are covering all news breaking. let's go to brian todd in south carolina with much more on the very latest. brian. >> reporter: wolf important new

developments tonight. we have told you about that mystery man, that passenger in the car that walter scott was driving. he has met with officials from the south carolina law enforcement division, met with them been released. his name is not being released. a serious complaint from michael slager's attorney who says that despite his repeated requests he has not received the cooperation from law enforcement that the media has. he has not received investigative documents, audio and videotapes. we reached out the police for response to that. we have not heard back. this comes on a very dramatic day that we got new sets of images from additional dash cam video from another police officer. cnn has obtained stunning new dash cam video from other officers arriving on the scene moments after walter scott is shot. you can see officer james gann speeding from a traffic call when he hears shots are fired.

you can see santana at a fence shooting his cell phone video. the key evidence in the murder case against officer michael slager. tonight, man at the epicenter of the case is in isolation. michael slager is being held alone in a jail cell the sheriff tells cnn. he is being monitored for his mental health. cnn is told investigators from the state law enforcement division are combing through every frame of the video of the shooting. as well as as of officer michael slager slager's dash cam video. the video still leaves gaps. >> we don't know whether they were fighting over his gun, his taser or just fighting and the officer was trying to subdue him. >> reporter: new revelations from state investigators who say initial clues in the vacant lot just didn't add up. a spokesman says there were inconsistencies and questions about what appeared to be

multiple gun shot wounds in mr. scott's back. they say something was not right about what happened in that encounter. the new details come as african-american leaders are growing more vocal in their criticism of the police. >> enough is enough. >> reporter: they say police target black motorists for traffic stops. one leader telling cnn police officers look for broken taillights. the dash cam video from scott's traffic stop shows the center light was out but that his lower brake lights worked. that stop is a daily occurrence. >> any time you ride down the street in any given day, you see four to five policemen has pulled someone over that's black. any given day. people see that and it brings anger. >> reporter: we reached out to the north charleston police for response to those complaints. we have not heard back. wolf? >> thanks very much. brian todd on the scene for us in north charleston, south

carolina. another breaking story, a police scandal in florida getting the justice department's attention here in washington. four officers have been forced out after sending racially offensive texts and making a shocking video. dozens of cases they investigated are being thrown evan perez is following the story. >> an amazing story. we have 11 felony cases that have been dropped, eight misdemeanor case. we are talking about cocaine possession burglary assault cases being dropped, all the result of this investigation that found that these officers were exchanging these racist text messages some of them mocking president obama, some of them mocking some of the people that they encountered, people they are supposed to be protecting and serving. one officer made a video, a mock movie trailer titled "the hoods" which depicted an image of president obama wearing gold

teeth, images of a ku klux klan hood. these are things that the police department there says that they are trying to fix. the fbi and justice department are monitoring the case. they are very interested to see whether this is a wider problem in the police department. one issue for the broward county state attorney's office they talked to us today, they are looking at 11 misdemeanor cases where defendants have pled guilty. now they are reviewing whether they can drop charges, whether a judge would allow them to withdraw charges. i should add that these are cases involving african-americans. >> this is in ft. lauderdale. >> correct. >> shocking development over there as well. thank you. let's get back to breaking news the south carolina police shooting case. we're joined by the president and ceo of naacp. thanks for joining us. i will talk to you later about what evan reported.

but you have seen the video, the shooting the killing of this 50-year-old african-american man in north charleston south carolina. you have seen the dash cam video. i'm anxious to get your reaction. we haven't spoken over the past couple of days. >> wolf the video is in fact heartbreaking, heart wrenching. it's also the kind of thing that creates a sense of determination within us as a people to respond to this seemingly unrelenting procession of victims at the hands of our police officers. it is a sad thing to watch. >> what is this incident -- this latest incident another shooting of an unarmed african-american man say to you about the continued tenses that exist not only in north charleston but around the country between police and the african-american community? >> i think what it says is that the focus on simply reducing crime without focusing on the

manner in which we reduce crime is insufficient law enforcement. we have to think about encouraging respect in our communities. we have to look very carefully at this notion this practice of responding to seemingly minor offenses with major uses of force, often lethal. it's simply not enough to reduce crime in the most heavy handed iron fisted manner. we have to go beyond that. the best research and the best practices suggest that we can. it's a moment in this country where the weight of recent history suggests to us that we have to do better and we can do better. we have to respond to this crisis with a sense of urgency. >> dr. martin luther king junior's daughter i spoke with her earlier today about the role race may have played in the shooting. listen to this.

we have seen that horrific video. do you believe that there is an element of race that played into that? >> oh no doubt. i do think there is an element of race obviously. i don't think it's the only element, but i certainly think it is an element. >> do you agree with her? >> yes. when we look at the color and complexion of the victims, it suggests that we have a major problem. and the fact of the matter is when you look at the stop and frisk policies in new york city where we have had thousands of african-american men and latino men stopped and frisked without guns or drugs found on the overwhelming majority of them with we look at cities and towns across the country, we have a set of practices that disproportionately affects communities of color. race is an undeniable element of the tragedy we find ourselves in the midst of.

so we cannot simply blink away this problem. we can't suffer the delusion -- the illusion that we are in the midst of a post-racial society. this problem is real. the fact of the matter is when we see families grieving over the loss of fathers and grandfathers loved ones it's not enough to say that this is simply another tragedy unrelated to the previous tragedy, unrelated to the previous tragedy. >> you are a lawyer. is there a federal case here? we know the j usustice department the fbi are investigating. we heard about the initial stop. he said you have a broken taillight. can we see your driver's license and insurance. it didn't sound like there was any anti-black racist talk or anything along those lines. you are lawyer. is there a federal case here, a

sufficient ill civil rights case? >> we don't know whether or not there is a case here. we know there's enough to call for a federal pattern and practice investigation. as we have seen in other police departments around the country, facts matter. and initial facts don't necessarily suggest, make clear where later conclusions will be. but there's enough here to be concerned. the fact of the matter is that we have an unarmed civilian fleeing from a police officer in a traffic stop. there's enough here. there's enough here. >> all right. i want you to stand by. there's more to discuss, including other disturbing incidents that have been uncovered in recent days as well. much more with cornell brooks of the naacp when we come back.

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we're back with the president and ceo of the naacp. we are talking about the breaking news in south carolina the police shooting there. a new angle of the aftermath of the shooting. let's talk about body cameras. i understand that the naacp is calling for what's described as a citizen review board wants body cameras on all police officers nationwide is that right? >> absolutely. when we think about the fact that we have bystanders who have cell phone cameras that we have communities who are relying on chance and happenstance for their protection. we need body cameras on the

officers' uniforms so that they might be protected from false charges but that a community might be protected from police officers engaged in unlawful behavior. we have the technology. it's readily available. we need to deploy it. it's not a panacea, but it's needed. the time has arrived for us to bring this technology to bear on this problem. >> what's your reaction to the report -- you heard evan perez mention this report of these ft. lauderdale police officers who exchanged text messages a video containing racial slurs, depicting president obama with gold teeth, a ku klux klan image. this is a major city ft. lauderdale. >> it is quite sad. and it is -- i would like to believe in aberation.

but we have to appreciate the fact that a law enforcement culture has to be a culture of respect. bigotry, racism bias does not contribute to a culture of respect. so when you have officers engaged in this kind of behavior by definition they are not qualified to protect the communities that they serve. they are not qualified to wear a uniform or to carry a badge. we have to create that culture. that has do with recruitment and training with standard setting. when you see that kind of behavior you have to ask yourself is this reflective of just these officers or of a broader culture. >> stand by cornell. i want to bring in our law enforcement analyst tom fewuentes and joey jackson. you want to respond to the video, the text messages the

racist slurs by members of the police for the of ft. lauderdale? is there a culture problem there? >> i don't know the situation in ft. lauderdale. a degree with cornell. these officers have no business being in uniform. i think the answer is it isn't just training. you can't train away bad character. these officers have to be not hired. what i see across the country and i consult on this is a lack of adequate screening for good character before you hire a cop. when they don't do it they put people in uniform, give them a stick, a gun, a taser, send them out on the street and bad things happen. these cities wonder how did that happen? maybe we're not doing good enough training. maybe we need community policing. you can't community police your way out of hiring bad people and putting them in uniform. >> better pay? >> better selection on the front end. plenty of people applying that have good character. you need to fine the ones that don't have good character and keep them off the police

department. >> well said. joey jackson, in addition to all of this we also have amazing video we have seen that another incident in california. i want you to look at this video from california where ten deputies have been put on leave after footage showed sheriff deputies brutally punching and kicking a suspect after he fled on a horse. watch what's going on over here because it is really horrific. and you can see, these deputies they just go over there. the guy is on the ground right now. they're just punching him. they're beating him. it's a pretty awful spectacle. they kicked -- we went through it 17 times, punched 37 times, they hit him with a baton four

times. he is lying there. what's your reaction to when you see this kind of behavior? >> you know wolf outrage would be a mild statement in looking at and evaluating what we are looking at there. when you look at police and community relations dshz we ss -- we know the victim here was white. the reality is that the community has to trust and respect law enforcement. and there has to be mutual trust and mutual respect. when you look at law enforcement, there's a wide deal of discretion that law enforcement has. as a former prosecutor there was a wide deal of discretion i had with regard to who was charged, what were they going to be charged with the degree of misdemeanor, felony and that affects people's lives. when you see encounters like this and when you see a person who is seemingly fully surrendered, fully on the ground fully compliant at least it appears to be -- of course this tape will be subjected to further analysis. when you look at a number of

deputies who apparently have control of the situation and who are exceeding that by just hitting and punching and kicking the a.mount of times, it's tragic. there needs to be a two-tier investigation. the first, a criminal investigation because if you crossed a line you have to be held accountable no matter who you are. the second is administrative. do they deserve to wear a badge? if the answer to that question is no seemingly from this video, then they should be removed of that responsibility. >> i want cornell to weigh in. tom, what do you think. >> i agree, completely. they need to be removed. the investigation has to determine the identity of each officer that did participate and any other officers that enabled it and go with prosecution on that, remove them fire them incarcerate them. there has to be zero tolerance for this kind of behavior white or black victim or anyone. >> we will show you the mugshot of the victim in this case. cornell, your thoughts?

>> i notice that the horse was treated better than the human being on the ground. it's animal is tick behavior. it's brutal. the only question i would have beyond the comments that have been made is what is that police department like when you have so many officers engaged in this conduct? is this kind of conduct sanctioned? i would want to look more broadly. >> cornell, we wouldn't know about this but by chance a news helicopter was flying over capturing all of this. it's a new age right now with all the video, the dash cam, cell phone video, helicopter video. it's a whole new world, right? >> absolutely. you believe we need not rush to judgement nor delegate to technology the responsibility to assess all the facts. we need to be clear about this.

we are in a new age. it's a new age where the technology can enhance a sense of accountability. we need to use that technology to the extent we're able and to also use it appropriately and to bring our best judgment to bear. >> just wrap this up. i assume these police officers the sheriffs they will be charged, right? >> without question. where i think you are going to see administratively discipline taking place. that will be -- should be swift and immediate. then of course you will see prosecution based upon what their conduct is. under the statute, it's assault and battery. you are hitting someone. you are punching someone. you are kicking someone. causing injury. that injury could be significant. wolf as you showed the mugshot there, you know, that mussgshot looks like a person who has gone through something. we don't know what if any internal injuries there are. we are just looking at his face.

we know there were kicks to other parts of his body. it's about accountability whether you wear a badge or not a badge, no one is above the law. they need to be held accountable and hopefully they will be. >> joey jackson, cornell brooks tom fuentes, thanks very much. good discussion. unfortunately, bad news as we all know. just ahead, an american charged with attempting to bomb a major united states military base all in the name of isis. he tried to enlist in the united states army so he could launch an attack. that's the accusation. we have details. is al qaeda more dangerous to the u.s. now than isis? the answer ahead from the defense secretary. his first in-depth interview since taking the job.

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breaking news tonight. a former u.s. army recruit charged with trying to bomb a military base in the heartland of the country. the latest accused of plotting attacks in the name of isis. evan perez is back with us. tell us what's going on here. >> reporter: this is a 21st ed arrest since january. he was arrested today as he prepared to carry out what the fbi says was a suicide bombing at fort riley in kansas. this was an fbi sting operation. the inert bomb was provided by a couple of informants that the fbi had working for them. he had signed up for the army back in last year in february

2014. he was supposed to show up for basic training in april. in between that time the fbi found a couple of facebook messages in which he said that he wanted to leave the country to go fight jihad. they interviewed him. he confirmed that indeed that's what he wanted to do. the fbi left him alone and introduced informants over the next series of months. it appears that despite being talked to by the fbi, he was not dissuaded. he recorded a couple of videos -- video messages claiming that he had sworn a allegiance to isis and he was doing the bombing today on behalf of isis. >> he converted to islam, changed his name, right? >> changed his name. also on social media. he said he was inspired by some of the isis propaganda messages. in particular an american who

carried out a suicide bombing in syria against syrian military installation. he went by the name jihad joe. he wanted to do exactly what jihad joe had done. >> 21st american arrested this year in the united states allegedly trying to work with isis. very disturbing information. a new warning about the terrorist threat here in the united states from isis and al qaeda. ash carter spoke with cnn's erin burnett. she traveled to south korea. tell us how that went. >> you know wolf it was very interesting, because he had a lot to say about iran about isis and about al qaeda. he talked about isis, how it was a barbaric group of unknown proportions in terms of how it has been able to recruit people. i asked him directly on the key

difference. what is the biggest threat al qaeda or isis? he chose to highlight al qaeda. here is the defense secretary. what's a bigger threat to the united states right now, is it isis or al qaeda? >> al qaeda has now suffered more than a decade of constant pounding by the united states. so they are much reduced compared to what they were and their ambitions. however, they still have a serious preoccupation with direct attacks upon the united states. particularly several branchs of them like aqap. so i think we have to remain worried about al qaeda because of their determination. >> you said it's growing in strength. >> aqap has opportunities in yemen that it didn't have when

there was a government. yemen is in the middle of a civil war. that creates opportunities for terrorists groups. >> one of the interesting things that he said in addition to choosing to highlight al qaeda, he said it has been set back but he thinks their ambition is to strike the united states which he thinks is a more near and present danger than an tack by isis. that was an interesting thing. he said though in terms of troops he said categorically, he will not hesitate to recommend them to the united states. he doesn't think we're at that point yet in terms of actual american boots on the ground when it comes to the fight against isis. he said we're not at that point yet. it was very clear to me that he was not taking that off the table and not saying the fight is at such a point where we wouldn't need american troops. wolf in terms of iran he had tough words. the supreme leader this week in the response to the deal said there will be no access to military sites. the secretary of defense said absolutely not, that there would

be abscess to military sites and that the big bomb as you know they have been testing and they built really for the express purpose of being able to strike iran's deepest and most fortified nuclear site we hear they have been working on that it has been in tests, it's not ready. he said without hesitation, it's ready. it could strike that site today and be able to destroy it. >> important information from the defense secretary. thanks very much. watch the interview with the defense secretary during a special edition of "out front" live from south korea at the top of the hour only here on cnn. let's thank erin for that. tonight, there's growing skepticism that a landmark nuclear deal with iran will be finalized. that's because iran's top leaders are making provocative statements about the tentative agreement that contradict directly what u.s. officials have been saying. let's go to jim sciutto.

he has the latest on the discrepancies coming from iranian leaders as opposed to the president of the united states and secretary of state. >> reporter: that's right. this is a problem with this interim deal. it's a framework agreement. nothing was written down on paper. now you have iranian officials in public citing differences with u.s. officials. access to the most sensitive military sites. the question,is is is that political posturing or a public renegotiation of the deal? applause as iran's president showed off advancement in nuclear technology a public display of iran's commitment to keeping its nuclear program. >> translator: we will not let go of our peaceful nuclear technology. enrichment will continue. we have over 1,000 centerrifuges in place and they will remain in

place. >> reporter: after the euphoria on the streets of iran after the sides worked a framework deal now comes the political reality. in a speech and comments on his twitter account, the ayatollah, the final say on any deal drawing a line in the sand. no agreement on the nuclear program unless sanctions are lifted immediately on day of the deal. speaking to cnn, the administration's point man on the middle east dismissed the comments as background noise that negotiators will tune out. >> let them do their work. there's about three months here to hammer out details. they will do that behind closed doors. there's going to be a lot of background noise. >> reporter: close followers of the negotiations see the danger of something more. iran pushing the limits on the assumption that the obama administration wants and needs an agreement more than tearhran.

even with the differences between u.s. and iranian officials, the strongest language in the last 24 hours is not between the u.s. -- but within the u.s. between democrats and republicans. mccain said kerry was delusional to which the white house josh earnest responded today with this saying john mccain is naive and reckless for him to believe every word of the supreme leader's political speech. he shouldn't. that's the comeback from the administration that this is political posturing by iran. they have their agreements that they made in switzerland. it's a framework they believe in. they believe they can bridge the remaining differences in time for this june 30th deadline. one more thing, wolf. the other headline you are

hearing from iranian leaders is that the deadline is not so hard and fast. that might break, too. they might need more time days or weeks after that to bridge the remaining differences. we might be waiting some time. >> you are right. thanks very much jim sciutto reporting for us. let's bring in peter bergen and phillipip mudd. peter, the grand ayatollah says all sanctions will be released -- will be suspended immediately once they sign an agreement and that there will be no inspections of any military facilities. if they back way twr fromfrom that he looks weak and awkward. >> yes. but there are hardliners --

>> those are non-negotiable. there has to be no immediate suspension of all of those sanctions but gradual depending on compliance. >> right. if he sticks to those points of view he will stop the agreement. is this a political statement he is making to placate hardliners in his country or is it something more? >> they say there can be free access to inspections and that the sanctions are not immediately being suspended, what happens? sfwl >> we're talking about iran. i remember when we were dealing with hussein and the technical negotiations about what we could have access to what is sensitive, what's military. what i see happening is here is both sides, the americans and iranians interested in a deal but trying to placate individuals who want to avoid a deal. even if we get one, i can bet you a paycheck what we're going to have is negotiations about

how long you need to advise before you get access, whether you can go to sensitive facilities. even if we get in there, this is going to be a difficult deal. >> it sounds like opposition is building up on capitol hill not just from republicans but democrats, right? >> right. we will see how this plays out. >> it's by no means a done deal. is it doable? what do you think? >> i don't think it's on life support. i think it's surprising that a supreme leader in a society so conservative has to come out and say to his -- he is playing to his audience. we're interpreting this from washington. he is saying to his people, we're going to get what we want. even as the president here says the same thing. not surprising, i think this is follow politics. >> if there's a deal can the iranian leadership say one thing and the u.s. say something else even if it's signed? >> i think we're seeing that already. i think a deal that's signs, as phil indicated, then there's the implementation. there could be a lot of negotiations around the

implementation implementation. >> remember the new book. >> thank you. >> a very nice title. if you want to find out what you can do to help civilians affected by the violence in the middle east go to cnn.com/impact. just ahead he more the american charged with trying to bomb a u.s. military base. the worst fears about the terror threat in this country. we know when hillary clinton will announce her presidential campaign. what will her message be? we have new information. stand by for that.

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stand by for more breaking news. new police dash cam video showing the aftermath from a different angle. hillary clinton is about to say the words people have been expecting to hear. more now on clinton's presidential campaign kickoff weekend. >> wolf hillary clinton's video

and her travel to the key early states of iowa and new hampshire is about introducing her rational for running for president. she will be campaigning as a grandmother who wants to improve opportunities for her granddaughter's generation. >> don't you some day want to see a woman president of the united states of america? >> sweeping aside months even years of speculation, cnn has learned hillary clinton will announce her presidential campaign this sunday. like her 2007 announcement -- >> i announced today i'm forming a presidential exploratory committee. >> it will come via video. that is where clinton advisers hope the comparisons to her failed 2008 bid will end. in a new ep she lays out a rational for her presidency.

unfortunately, she writes too few of the children born in the united states and around the world today will grow up with the same opportunities as charlotte charlotte. she says becoming a grandmother rather than make me want to slow down, it has spurred me to speed up. state of iowa. >> i'm back. >> reporter: in 2008 her third place finish there signalled the beginning of the end for her campaign. >> thank you. >> reporter: a new poll shows her admission she used a personnel e-mail account to conduct government business as secretary of state may have affected her favorability there. she will need to navigation other challenges distinguishing herself from president obama without alienatings his loyal

voters. she served as his secretary of state and was in charge during the benghazi attack. if elected, she would be 69 when she took office making her the second oldest president in history. there's also the bill factor how will the campaign manage the sometimes unpredictable former president. working out of office base leased in brooklyn new york hope to be better poised when the campaign becomes official. >> her first stop in iowa shows this campaign will be different. she's showing some humility and wants to campaign for the nomination even though she's the front-runner in the polls. then it's onto new hampshire which was much more friendly in 2008. she had an unexpected but

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new dash cam video of the south carolina police shooting case. there's another story we're following tonight. the crash of germanwings flight 9525 is prompting new scrutiny

of technology that would allow commercial airlines to fly without a pilot. renee is looking into this story. it's pretty amazing. >> it is. aircraft already fly without pilots in war zones. the world has yet to see commercial planes without passengers on board following the crashes including germanwings where pilots were to blame. some are asking whether no pilot on board is safer option. >> reporter: the military has used planes without pilots for decades and watch as this commercial airline pilot takes it in for landing. his hands on his lap as the plane lands itself using auto pilot. >> reporter: after tragedies like germanwings 9525 where pilots were blamed for the crashes, some are asking if

planes should be flown from the ground or by computer. duke university professor and former air force pilot missy cummings said it's an interesting concept. >> pilots who are flying aircraft airbus said at the maximum they are touching the controls for three minutes during the flight. the technology is here. the question is when's it's going to be legal? >> reporter: the faa has not approved pilotless flights and the agency said it's not been asked to do so. in other countries tests are being conducted. >> go. engaged. >> reporter: cnn flew through uk air space aboard a modified test plane. the pilot controlled it from the ground. >> i have control. >> you want control? >> reporter: the people on board only there in the event of an emergency. taking pilots out of cockpit

could make flying safer. >> it's undisputed that about 80% of the all crashes commercial and military are due to human error. >> reporter: georgia institute of technology profession soror who is also a private pilot said technology can fail and could be deadly. >> the places where we have seen them flown the most is with military. >> reporter: even if technology could be perfected, there's no effort showing people would take to the idea. >> i spoke with airlines about this idea of the pilotless commercial plane and they are all mum on the topic.

that said government agencyies like nasa and the department of defense are currently doing research to further increase automation in the cockpit. >> interesting stuff. amazing stuff. renee marsh. erin burnett outfront starts right now. good evening from seoul, south korea. the u.s. secretary of defense ashton carter in his first in-depth interview as secretary. a massive bomb built to take out iran's fortified nuke site. breaking news on major story we have been following in the u.s. new dash cam video just released in the south carolina shooting. what happened in the seconds before walter scott was shot and killed. let's go