it sank. was it a design flow? were the rivets weak? they try to point fingers at it and if you look at each thing in isolation you really can disprove it. >> reporter: the way to solve the mystery this time, he says, is the same. >> if we can find the wreckage as we did find the wreckage to the titanic we can reverse engineer and figure out what happened. with titanic, the wreck will have the last word. >> reporter: jean casarez, cnn, new york. the death toll for the sunken ship in south korea stands at 36.

266 still missing. the captain and two crew members now face multiple criminal charges. a live report is just ahead from jindo, south korea, where families are holding vigil for their loved ones. and the challenges facing the rescue divers as they look for victims there. a western official tells cnn u.s. troops will be training in eastern europe. a company of 150 troops will northbound poland and another company headed to estonia and exercises take place in the coming weeks as part of an ongoing operation and comes two days into an international pact to ease tensions in ukraine but so far no indication of any progress on the ground. prorussian sprastiseparatists a

refuse to go leave the buildings and lay down their weapons. 40,000 russian troops are across border in ukraine and putin says they are needed because of ukraine's political instability. this is the first time russia has said that deployment was for anything other than for military exercises. we want to get the latest from inside ukraine. cnn's frederik pleitgen is live in kiev. if can i begin with the news we confirmed about u.s. troops set to train in countries close to ukraine, has there been any response to where you are? i know that many on the ukrainian side have been looking for reassurance from the west and the u.s. that they are backing them, that they are standing with them as the president has often said? >> reporter: so far, this newest news there hasn't been any reaction just yet. one of the reasons many people are celebrating easter which is an important holiday in ukraine. i was able to speak to the prime minister only two days ago and

he said any help the government could get here would be highly appreciate. he doesn't mean direct help but things like a show of force. aecket what t exactly what the u.s. is doing right now. they have been looking for more u.s. presence inside their borders and the borders of nato for a long time but the ukrainian government feel very much bolstered by the additional efforts the u.s. is making basically what they want is they want u.s. troops as close to them as they possibly can. they want the u.s. to have a presence on the ground no matter how small it is. it is something that at least in the meantime, they believe will deter the russians from doing anything more. >> looking at this deal, regarding, you know, the instability inside ukraine, as part of the deal, these pro russian militants were supposed to vacate these buildings. is there any sign they have done that and any confidence to those on the ground that is going to happen any time soon?

>> reporter: absolutely zero at this point. one of the things we can say about this deal that was reached in geneva on the one side those people who are occupying those buildings, pro russian prefers say they don't feel bound by that whatsoever. they say they are not leaving those buildings and for their part have made counterdemands where they want the interim government here in kiev to step down. that clearly isn't going to happen. they also said they want what they call right wing national groups here to disarm if they are going to disarm. the interesting thing about all of that is that you would think the russians would have some sort of influence over these groups but so far the russians for their part are making the exact same demands now and saying they believe that these what they call nationals pro right wing groups on the ukrainian side need to disarm before any sort of movement. that clearly is something that is not helping the situation at this point in time. the government of kiev for its part is trying to calm the situation down. one of the things is over the easter holidays they have called one-sided truce. they say that so-called

anti-terror operation which they have launched in the east of the country is on hold at least for the easter holidays but say they want to see some movement quickly and certainly don't trust the accord that was reached in geneva but still believe it could be a starting point even though it seems to be some very difficult waters at this point in time. >> still, as you say, two different views of reality from russia and europe and the u.s. thanks very much, frederik pleitgen. he is in ukraine. earlier i talked to michael bowsarcue who is in kiev about getting ready for its mission to help implement the geneva agreement. i asked him about their plan, the challenges they face and how to deal with the many road blocks there. >> as you may imagine in a large country like ukraine with regional differences there is a wide range of stake holders here. you have members of the community. you have law enforcement. you have government business

leaders. our monitors will play quite a leading role in bringing the various parties to the table and i should also point out that we have a hundred monitors on the ground, more to come up to 300 and many of them have very very good russian language skills and also skills in negotiation, law enforcement, human rights, that sort of thing. >> i suppose it's progress you're going in because i know previously there were a number of times when monitors were blocked by pro russian forces from entering. what is the key to get pro russian separatists there and protesters to abide by this geneva agreement? because, so far, they are not listening to the order to give up the buildings they have seized. what is going to change then? >> i guess political will, trust. and also ukrainian government we met with them the two past days and they realize there need to be confidence building measures

put into place. you may know there has been longstanding desires here in ukraine for things like decentralization. those are among the grievances we have heard from talking to the parties in the east. so i think as long as, number one, they understand the agreement, understand who we are and then also have an understanding that the ukrainian government will act in good faith to implement some of the promises it's pledged it will be easier for them, i think, to evacuate some of the buildings and that sort of thing. sunday is set to be a very quiet day in eastern ukraine. the ukrainian military said it will suspend operations against separatists to honor easter sunday. another story we are following. the ferry disaster in south korea where 36 people are confirmed dead. our kyung lah joins us from the port city of jindo where parents are waiting for word about their

children missing on that ship. how are parents coping on another day with no good news and waning hopes that there will be good news? >> reporter: it certainly is waning hopes. increasingly they are lashing out more at the police and the government. they are desperate. you can sense it. you could hear it in q&a yesterday they'd with the coast guard here at the dock. they were screaming out how am i supposed to live? why aren't you trying to harder to get to my child and why can't you break through the glass? is there anything coordinating happening out there at sea? there is mounting frustration here that it isn't happening quickly enough. what these families are clinging to is the hope that their child may have found an air pocket somewhere inside this very, very

large ship. it's a ferry but it is 6,000 tons and it's extremely large. it had a lot of passengers on board. even though it's submerged this they may have found an air pocket but it bears reminding there has not been a survivor found since the first day. we are now into our fifth day. >> you've done great reporting about another danger there and that is about suicide. from some of the parents of victims. a teacher has already committed suicide, a survivor of this. how serious a concern and what is being done there to prevent that from happening? >> there are kourncounselors he this dock. they are unable to cope what is happening. there are so many of them. there are hundreds of them here. they are sort of feeding off each other in a way.

the counselors hoping to get them to talk. if you go to the tables where the counselors are posted, there is no one there and no one is seeking help. suicide is a real concern here. it is number one south korea that is, number one, among all of these countries as far as the rate of sued. >> a frightening prospect. thanks to kyung lah there. we will speak with a retired diver ahead about the challenges they face in this search and the blue-fin 21 is scouring the floor of the indian ocean for the flight 370 but only another five to seven days. then what? we will have a live report from perth after this. a lot of attention. there's unlimited talk and text. we're working deals all day. you get 10 gigabytes of data to share. what about expansion potential? add a line anytime for 15 bucks a month. low dues... great terms... let's close.

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completed six missions in the search for malaysia airlines 370. the search of the ocean surface hasn't stopped either. 11 military airplanes and 12 ships covered three separate search areas today off of western australia. still no wreckage spotted. in the coming days malaysian government officials will meet with the families again and families want to see the log book and listen to the air to ground recordings of the flight crew before all of the communications went silent. live in perth, western australia, cnn's michael holmes. we have been reporting that blue-fin 21 drone should be wrapping up its seventh run about now. do we know if it saw anything? any results of this search today? >> nothing official yet, jim. we are getting more details the last day or so of the narrowed search area. that more defined search area we have been talking about

basically centered around where they got that second acoustic sound on april 8th. talking of an area about six square miles and that is the area they are focused on now. after mission six ended yesterday around 50 square miles or so have now been covered. around 40% of that focused area, by the way. we are awaiting news of the seventh mission by our judgment it should be up by now. the mission should be completed and we normally get the data results within an hour or two of that. yesterday, we heard the acting malaysian transport minister saying the search was, in his words, at a critical juncture but if this phase was unsuccessful the hunt would condition. >> explain to our viewers if they are nay narrowed the search area to 200 miles why are they putting this five to seven day time limit and saying we are taking a break if we don't find anything here? >> reporter: yeah.

a good question. what they are saying essentially is that where we got the strongest acoustic sounds. we can't call them pings but it does appear that they were. so what they did they narrowed it down. it was originally about a thousand square miles. pulled it down to this smaller area around where the strongest acoustic signals came from as their best guess of where the wreckage might be on the ocean floor. so that is the one they are doing this sweep of trip by trip by trip doing about 15 miles, square miles a day. working their way through that focused area. if they don't find anything and they might not, they are saying we are not giving up. we will expand it further and look further and do circles further out. they do have an arc of sea that was highlighted by what they call a digital handshake between the jetliner and one of those slaerts from one of australia's top transport officials and 370

long and 30 miles wide and take a lot longer to search but that is where likely turn their attention if this is unsuccessful. people close to the search are confident and be patient and see what happens the next few days. >> expectations management i imagine is part of this. one chapter in a long story. thanks very much to our michael holmes in perth, australia, where the search is being run from. if the blue-fin isn't successful then what? my panel is going to way in after this break. he's agreed to give it up. that's today? [ male announcer ] we'll be with him all day as he goes back to taking tylenol. i was okay, but after lunch my knee started to hurt again. and now i've got to take more pills. ♪ yup. another pill stop. can i get my aleve back yet? ♪ for my pain, i want my aleve. ♪ [ male announcer ] look for the easy-open red arthritis cap.

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a key deadline is looming in the hunt for malaysian flight 370. the blue-fin underwater drone will finish scanning the search zone five to seven days. blue-fin was covered 83 miles since mission began on monday. so far it has not found a shred of evidence linked to the missing plane so if blue-fin's mission is empty it's time for search crews to stop, regroup and reconsider. with me now to discuss this development we have david gallow, audio expert paul ginsburg and michael kay. michael, if i can start with you. if this search is rebooted after five to seven days, should the

malaysian government be in charge? should we look at who is leading this for the next phase? >> great question, jim. i think the independent investigator in charge will remain malaysia but i think they will quickly acquiesce in they need help with this and we have seen five other countries come in under this umbrella. you got the uk, u.s., france, australia, and china. thank you is appropriate because of the capabilities of the ntsb brings the capabilities of the investigation from the uk and australia france and everyone brings something to the party across operations, human factors and medical and worthiness, et cetera. i think malaysia will remain in charge but what we are seeing at the moment is memorandums of understanding and i think that is vital. when we do get some progress on this whether it be finding the black boxes we need to make sure that they get to the right people with the best capability without hesitation. >> political sensitivity?

>> absolutely. >> paul, you're the audio expert here. we have heard australian officials and others express confidence they are looking in the right place here. if they go over this next week and don't find any signs of wreckage and readjust the search zone how much of an adjustment are we talking about based on the pings they have heard from the data recorders? are they talks tens of miles, hundreds of miles or small adjustments around the edges? >> i don't think so. we only have a limited number of data points. one way or another we have different ping locations where we acquired it and really what gives me more confidence is the amount of time for which we did hear these things and identify them and 100% -- almost -- with, you know, with some qualification. we have pings.

we have -- they look like pings as far as all of the different -- >> but that is to where they are now. the question if they have done the sonar scan after searching that area that they have now and we haven't found anything how much do they have to move that search area based on that ping information? >> well, they would have to go around the perimeter of where they have been searching and see whether there is anything -- anything there. not go to an entirely different area. one that is contained within or slightly -- >> several miles around? >> it can't be hundreds because the signals -- >> correct, correct. the bouncing of the signals under water can be a little bit difficult to understand in terms of specifically locating where the pingers are. however, just like sound and air, the sound lessens as you travel. >> right. you have the sense -- you can

calculate distance based on that weakening signal? >> right. >> david, you found the other great mystery on the bottom of the ocean, air france 447. what lessons were learned in that semp? it took a long time. that can apply here as they are adjusting? >> in the search itself i think the big lesson was patience. we had in the early days a lot of distractions and it wasn't until the team had the opportunity to be left alone and it came down to one team with one set of technology. we had three -- 6,000 very large to the blue-fin. we had one operational plan and that was to cover area systematically with only one goal and find that aircraft and those black boxes and we didn't think about anything else for those two years in that search. >> so many things. choose your goal and stick with the plan. >> right. >> we will have david, paul, and michael back in a short time. thanks very much, as always. coming up, there are heart breaking stories coming out of

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welcome back. i'm jim sciutto in new york. in south korea three more bodies were recovered from the ferry that sank last wednesday and brings the official death toll to 36. but 266 people are still missing and recovering could take some time. family members are providing dna samples to help with identification. the captain and two crew members now face multiple criminal charges in the disaster. the families left behind in this disaster are struggling with a mixture of anger and grief. and for at least one mother, regret. she persuaded her daughter to go on that ferry trip and now she watches the water and waits.

cnn's pauline chu witnessed her heartbreak. >> reporter: christine kim encouraged her daughter billy to go a school field trip to jeju island but billy resisted because they had visited the resort island two months ago. >> so i told her, i think you be very great experience for you. >> reporter: she successfully persuaded her daughter to go and now it haunts her. >> my daughter in the water! my daughter, i can never sleep! >> reporter: parents have waited for any news on their sons and daughters. my son was on board, this man says, but they were all like my children. many parents feel helpless as search divers work around the clock fighting strong currents and bad visibility. the president met with families

thursday evening and she promised to add more resources to the rescue effort saying every minute is precious. and with each minute that passes, christine kim aches for the daughter she loves so much. just heart breaking to watch and listen to those stories. rescue divers are looking for victims inside the ferry and they, themseles, face their own risks and dangers. joining me now is a veteran diver bobby scoli a retired u.s. navy captain. describe for us from a diver's perspective just how difficult this assignment is. the water temperature, currents and condition of the boat, what kind of challenges? >> good evening, jim. as the mother of elementary school kids, my heart just goes out to these parents. as a navy diver, i know exactly what these rescue divers are up

against. in a way, this scenario reminds me a little bit of the twa flight 800 operation that we did. the huge difference being these divers are hoping that they will still find survivors but they are up against these huge currents that are fighting them to get inside the skin of that ship. you'll see on some of your footage, you'll see lots of little black rubber boats with scuba divers in them. those scuba divers are diving on the outside of the ship, jim. they cannot get into the skin of the ship, inside the ship to look for survivors. the divers that are doing that are the hard hat drivers that have the yellow hoses, we call them yum biumbilicals attached their helmets and have air from

the helmets. they are getting inside the ship. i was pleased to hear they got through one window and get access into the third level. >> we have heard other divers describe the pressure challenges there? that would you have different pressure on either side of the window. in the event of a miracle where someone is still alive there inside in, say, an air pocket, how could a diver access that person? >> they need to be going in through the flooded space of the ship through the water so they need to go up under the ship and access the interior of the ship through the flooded spaces and then go up through the different levels to find those air pockets. now we have the problem that those survivors that are in the air pockets are also pressurized. the ship has been sinking down through the water column. so those survivors are like

divers right now. they have been under the water, the air pockets have been pressurized. they have been breathing pressurized air, pressurized gas and they have become pressurized themselves. like a diver, they would need to be decompressed as they bring them up to the surface. this is a little bit becoming like a submarine rescue scenario, so we have a further complication of this recovery scenario coming on. i know some people have talked about stabilizing the ship, bringing the ship up and cutting holes in the bottom to rescue the survivors. we can't do that at this point. we cannot do that. that would kill any survivors that might be in those air pockets. this is a very complicated situation. we have got at least two korean diving and salvage ships on the scene and one from the u.s. is on its way. lots of expertise there. i know they are doing everything they can but they have to race against time if they are going to fine any survivors.

>> fascinating sobering, bobby. thank you. challenges i don't think any of us were aware of in terms of the difficulty of getting people out of that ship. thanks so much. we will see you again in a few minutes to talk about the continuing search in the other major story we are following, malaysian flights 370. new pictures show a private plane belonging to utah investors inside iran. the problem the u.s. prohibits americans from doing business there. how did an american private plane get there? the investigation into that story is after this break. red lobster's new seafood trios is three times delicious! choose one option from the wood-fire grill, one signature shrimp dish, and a pasta like new lobster mac and cheese. three choices all on one plate. just $15.99. for a limited time only! you can build it any way that you like, pick your three favorite things. it is spectacular! i'm nathan tavernaris and i sea food differently.

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now to a real life mystery playing out from the u.s. to the middle east. american plane has been found at an iranian airport. problem is with u.s. sanctions still in place no americans are allowed to do any business there. so what is going on? cnn suzanne malveaux reports. >> reporter: an american cl 600 aircraft captured in a photo by "the new york times" sits at an iranian airport and an american flag on its tail. is someone breaking the law? >> the iranian transaccess itio sanctions -- by u.s. person -- to iran and would generally prohibit u.s. registered aircraft from flying to iran. >> reporter: the state department is investigating.

but it's the treasury department that is taking the lead. and will enforce if appropriate u.s. sanctions. >> you can travel to iran but you have to get permission from the government and clarity as to the things you can do and the things you can't do. one of the first questions here will be whoever made this trip that they apply to the treasury department for permission with a clear understanding of how you can spend money in iran and how you can't spend money in iran. >> reporter: adding to the mystery. initially a spokesman for the airport quoted an iranian media says no u.s. plane landed there at all. according to federal aviation records this plane with tail number n-604ep is held in a bank. the banker bank confirmed it owned the plane and doesn't operate it and didn't say why it was sitting in iran or who flew

it there. a spokesman says it is confidential and additional information must examicome from beneficiary. we were able to track the plane's recent whereabouts. last october the aircraft was spotted in ghana and the uk. in january, switzerland at the time of the world economic forum. february, back to the uk. and the next month returning to ghana. now the iranians say the u.s. plane was chartered by ghana's presidential office and was carrying a high ranking delegation. but the question u.s. officials will still be investigating is since it was an american plane, whether any trade laws were broken because, as we were told by the state department, the administration generally prohibits u.s. registered aircraft from flying to iran. suzanne malveaux, cnn,

washington. that would be the first american plane in iran in decades. still to come here, if the blue-fin is successful in its efforts to locate flight 370 what happens next? we will have a look at the device that would bring the missing plane's wreckage up from the ocean floor. ding! ladies and gentlemen, boys and girls, llllet's get ready to bundlllllle... [ holding final syllable ] oh, yeah, sorry! let's get ready to bundle and save. now, that's progressive. oh, i think i broke my spleen! home insurance provided and serviced by third party insurers. why relocating manufacturingpany to upstate new york? i tell people it's for the climate. the conditions in new york state are great for business. new york is ranked #2 in the nation for new private sector job creation. and now it's even better because they've introduced startup new york - dozens of tax-free zones

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south korean coast guard confirms ten more bodies have been found within the hull of that ferry that sunk on wednesday. that brings to 46 the number of bodies found so far and leaves 256 passengers still missing there. in other news. if and when the wreckage of malaysia airlines flight 370 is located one of the most advanced underwater search vehicles in existence will join the hunt for the flight recorder. rose is a fl rosa flores is here with more. you tell us this is one of the most advanced underwater things out is in there. >> reporter: it is. when you look at the history of the hov it tells you a lot because it pretty much made a human submersible obsolete. these are machines so they are safer and less expensive and when it comes to working in the deep sea they can work in those conditions for days. this could be the key to solving

the mystery of flight 370. it's a remotely operated vehicle or rov for short. once wreckage of flight 370 is identified an rov like this one is likely the next crucial step in finding the plane's black box. it's controlled from the surface using this joystick. has lights to illuminate the stark black of the ocean deep. cameras transmitting back footage in real-time and high frequency sonar to combat the notoriously difficult visibility in the area of the indian ocean where the plane is believed to be. but, most importantly, the r.o.v. has robotic arms called manipulators. >> arm has jaws. open and close the jaws. >> reporter: they are

essentially mechanical hands able to retrieve objects from the ocean floor far deeper than any human could withstand. >> stand and retract. >> reporter: a second manipulator can be be equipped with tools for cutting through metal such as on the fuselage of a plane. >> the ideal black box and not a problem for it to pick it up and recover it in the basket back to the vessel. >> reporter: experts say top priority for investigators is to retrieve both the flight data recorder and the cockpit voice recorder. this rov called the tighton slx can go to depths to around 10,000 feet but the rov brought to the wreckage of flight 370 could have to withstand the pressure of around 15,000 feet of water, underwater pulses were detected at that depth last week. unlike the blue-fin, searchers are are currently using, the rov is connected to the boat through

a line called an umbilical and has a constant power source and is able to feedback information immediately. >> rov can stay submerged for days. >> reporter: the hope is with these capabilities, the rov will finally manage to bring some answers to the surface. now, rovs can do much more than just grab a black box and put it in a basket and take it to the surface. when you think about getting access to those rovs, to the black box, for example, it can cut through metal and it can also use cabling, jim, to hook other debris that is of interest to investigators and then a crane would be used, a floating crane would be used to lift that item to the surface. jim? >> have to be doing that very difficult conditions three miles down, currents, temperature, et cetera, really going to be stretching the ability of everybody involved. thanks very much to rosa flores.

the main mission of the rovtriton is find the black boxes and bring them back to the surface. coming up, we will play you some black box audio that you'll only hear on cnn. [ male announcer ] ortho crime files.

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on the search for flight 370 we've been talking a lot about pings that may lead to the black boxes of that missing jet. one black box is officially called the flight data recorder. the second, the cockpit voice recorder which contains the last two hours of recordings of what's said inside the cockpit. now, if crews find the cockpit voice recorder from flight 370 how will investigators handle those delicate and sometimes difficult to hear sounds? we have a special guest with us now. he is audio expert paul ginsberg and he showed us some ping enhancements last week. tonight he's going to show us how sound enhancement techniques

work. we're going to use examples from night 93 hijacked by al qaeda on september 11th. it's a plane that crashed in a philadelphia field. we want to be very sensitive about how we air these recordings. we're not going to play them in full. only short bites to show you what the original sound data sounded like and what it sounded like after enhancement. so let's start right now by playing the original nalg sound as recorded in the tower on september 11th and then we'll play the enhanced sound. first, the original sound. >> just underneath, 360. >> all aboard. >> now, that was the original sound. so let's play the enhanced sound here just to tell the difference between what it sounded like originally, difficult to hear and discern and after the enhancement, some of which paul worked on. >> just underneath by hitting 360. >> is the captain would like to remain seated.

all aboard, and i will demand everyone to remain quiet. >> united 93 calling. >> now, paul, you worked with the cia, fbi, department of homeland security on investigations like this. that's a dramatic difference particularly to the untrained hear because it was hard to hear what they were saying initially. how does this compare to what we would likely hear if those cockpit voice recorders are recovered from the plane and how much work would have to be done to make them audible? >> well, there are a number of channels on the cockpit voice order so we would be working many different things, synchronizing with the data recorder and so on. the same enhancement techniques would be used and hopefully because it would be onboard the aircraft we would ultimately end up with even a clearer rendition. >> michael, i suppose one of the issues here is that it only records the last two hours of the flight. a lot of the most interesting mysterious things happen with this plane before those final

two hours. how valuable do you think these recorders will be? >> you know, i'm not sure two hours in this particular scenario is going to be enough because the aircraft has traveled a significant distance from the actual area where it's initially gone off track. i think when we talked earlier we look at the where, the what thes, and the why. the why bit is going on the incredibly difficult to discern if we're going to go back all of the way six hours to the point where the transponder came off in the south china sea and why it occurred. having cvr data at that point when it initially diverted from its track to beijing, i think that will be key. so not having that is -- >> now, the data recorders though would go back further than two hours. you would get a complete picture of data from those recorders. >> 25 hours. >> yes. it would encompass the entire flight. >> now, david, with air france,

those data recorders and cockpit voice orders were in the water for two years. >> they were. >> in sea t water and depth. >> we looked every day waiting to get out there because we had no idea how long that they would be protected against the environment of the ocean. so we were very surprised that all of the information was still there. >> and was there any -- >> the others were fine. there was a little bit but the data was fine in both. >> that's encouraging. >> bobby, if you're still there listening to us from afar, when you hear about these developments and you've done a lot of time searching at great depths, what particular challenges come to mind for you? >> well, you know, i understand what you're talking about with the finding the cockpit data recorder and i'm a little bit discouraged that we're already talking about, you know, five or six more days for the bluefin to continue mapping the ocean bottom.

i spent four months up off the coast of long island on twa flight 800. we picked up the flight data recorder within one week after twa flight 800 exploded. we turned that over to the investigators and they said that's not telling us what we need to know. i spent another four months up there diving off the coast of that island looking for what they needed to find for their investigation. so although i tote aly agree that those black boxes are the first priority that might not be what we need here. so, we need to let the experts do their jobs. i don't want to second-guess the people on the scene, but sometimes you have to continue the search beyond those black boxes to find out what happened. and it might be more than what's in those black boxes. it might be something in that

cockpit, you know. every salvage job is different. >> the wreckage is essential, too. we talked about the engines being key because you could tell if they were still spinning or stopped spinning and in effect, run out of fuel before it hit the water >> you can hear that from the cockpit area microphone. >> you could hear the engines were still going or not going. >> yes. that's another point. so the amount of data that you can get out of these things even in the last two hours. we don't have much time left. i would ask perhaps michael, there had been some confidence, i think expectations raised about a week ago from the australian prime minister who is spearheading this search saying we're confident. now you have this step back week, we may have to regroup.ext >> i have confidence in chief marshall houston. i think so far he's conductedmp. he's taken the search out to the ping limit. we should trust in him to do the same with the bluefin. as david was talking about earlier it may not just be one

area. we may go to bed at night and say i'm going to do this one more time. >> michael, thank you. paul, david, bobbie, thank you as well. i'm jim in new york. chicagoland begins right now. cnn's original series "chicagola "chicagoland" is proudly presented by allstate. are you in good hands? previously on "chicagoland" oi oh. >> there are 100 cities that drive the world economy. >> the very violent weekend here in chicago. >> a mayor like rahm needs to deal with this upsurge in violence. >> gun violence. you tell me what a parent would pay to have their child back. >> a matter of a split second your life can change. >> there's an ongoing gang