Why wasnt there a drone strike then . Now for two days, were hearing reports of what one yemeni official is calling an unprecedented strike win yemen. As you mentioned more than two dozen militants being killed. And the implication is there be drone strikes although that has not been confirmed but that was based on descriptions of the terrain. How difficult it would be to get troops into these very mountainous areas. But as usual in this type of operation, at this point, the administration is not commenting. Were hoping to get more information later today, chris. Michelle, thank you very much. Lets bring in chief National Security correspondent jim sciutto. Jim, lets start with the video at hand, came out last week. Was it specific at the time, was it related to this necessarily . It was definitely necessary at the time because it was so brazen. You had many leaders, many of them senior, meeting in Daylight Hours where u. S. Drones are often flying. No u. S. Officials are going to make a direct connection to this and the operation tra took place. Certainly this was an embarrassment to the Yemeni Government, arguably a challenge to the cuss and a failure. Obviously, this turned into an intelligence opportunity and one of the reasons they were led to carry out the attacks that took place in the last 48 hour. It seems like it may have been an intelligence failure for the bad guys as well seems like putting them out there heightened the situation. Where do we know about where this was taking place . The video took place in province east of the coast of africa. There were other strikes you might remember we were reporting where yemeni officials said ten al qaeda officials were structure. Now you have a combination of drone strikes with action on the ground. Not by u. S. Troops but yemeni troops. We do know that the u. S. Is the only country that conducts drone strikes there. And there is intelligence cooperation between the yemenis and the americans. We know this is a hot bed. And we also know this is an ongoing operation. Does that mean two days right now . It means they got a lot of bad guys in that country. We saw it in the video. Remember, its ongoing. They have to show their strength, youre right, this was an embarrassment but they have to follow through. But also for americans why do we care about this al qaeda and american peninsula, its called aq ap. This is a target on american targets and also targets at home. They carry out attacks and we know they have aspirations to continue do that. This is not something that happens a million miles away but seemingly acts lives here at home. The drones are effective because you dont have to have boots on the ground. But they do come with this bilateral byproduct. The yemenis Officials Say 30 being killed. That an important part going forward, them being able to clarify how many civilians were involved, hopefully, none . We already know that the attack that took place on saturday. Three civilians were killed in the attack. Its often very likely, in fact, when you strike from the sky with good intelligence, arguably, bit not perfect intelligence. Youre going to have collateral damage. Weve seen the damage thats caused in pakistan, afghanistan. We hear about this. Every time theres a strike, civilians are struck. This is a driving force of antiamericanism on the ground. Weve both been on the ground where drone strikes occur. Basically, they can take out the entire area, no matter how good the intelligence it. And you have to think going forward, jim, what will we hear in how much backlash in taking out the leadership . Thats always a challenge. Less in yemen, but more in pakistan and afghanistan. Its something that the u. S. Has to be conscious of, right . Because if the u. S. Wants to be able to continue these separations here which are a priority for the u. S. , they got to keep those relationships. And the Yemeni Government not exactly the most stable in the world. So any challenge say challenge to the u. S. Thank you, jim. Appreciate the perspective. Well find out more as the hits continue, well get information and bring it to you, kate . Lets turn to the grim recovery effort to the ferry disaster in south korea. The death toll continues to rise as the countrys president is condemning the captain and crew. Overnight, four more crew members were arrested in connection with the deadly accident as nearly 240 people, many of them High School Students, remain missing. Cnns Paula Hancocks is live in jindo, south korea, with the very latest. Good morning, paula. Kate, its a heartbreaking day in the harbor as the families here are being brought here and these desperate families have to walk through the tent where is theyre laid out to see if their child is one of those retrieved from the ship. Give home people are still people, this is a scene thats going to be playing out a lot over the coming days. Reporter this morning, the investigation into what went wrong is ramping up. Four additional crew members arrested overnight as the countrys president blasts the ships captain directly calling his actions, quote, a kin to murder. Hes now charged negligence. Even though not at the helm, his kapgt was. Newly released information shed new light on what exactly happened. Our ship is in danger, he says. The ship is rolling right now. By that time, the ship had already tilted too far for the majority of passengers to move or to deploy lifeboats. Five minutes later boat Traffic Control urged the unidentified crew member on the radio to prepare for evacuation saying please put on the life vests and get ready as people may have to abandon ship. Then after 30 minutes, both encouraged the captain to take charge. The crew member questioned the retreat asking if passengers would immediately be rescued. And now the grim task of retrieving the dead continues as families angry and anguished wait for news. And families are asking why its not happening quicker. Theyre making a lot of criticism saying that all the bodies, or at least a chance of looking for survivors should have happened already. But i did speak to one guy who said visibility was so bad, when he was out there he couldnt even get in the water. He said when he came back to the harbor emptyhanded, he couldnt look at the families. Back to you. Essentially that has become a Recovery Mission there. Well stay on top it of it along with the investigation. Switching to another mystery, bluefin 21, the underwater drone looking for flight 370 is back in the water scanning for the missing flight. More than twothirds of the indian ocean has been covered with no sign of the missing plane. Lets get to cnns Erin Mclaughlin. Are they starting to get nervous about the search area . Reporter good morning, chris, well, the next few days are mission critical. I wouldnt say theyre nervous. I would say theyre focused. Why . Because theyre searching in the area right now where they believe is the most likely place where theyre going to find the black box, based on the albeit and limited set of data that they have. Theyre homed in on the second acoustic detention that lasted some 13 minutes. It was the strongest signal of the four that that towed pinger locator was able to pick up. And theyre searching in a sixmile radius around that point. The bluefin 21 slowly and meticulously combing those waters. Nothing found so far. They have 70 of that area covered. They have another 30 to go. Australian authorities saying it could take another few days before completing that search, thats if the bluefin 21 performs as expected. And if the weather holds which is a big if. Considering there say Tropical Cyclone named jack to the north of the search area, currently making its way south. At the moment not appearing to impact the bluefins operation. Last time we checked it was in the water on its ninth mission. That cyclone could cause wind and rain in the area, even though its not a direct hit. Thank you for that. Lets take a look at more of your headlines right now. There have been a spike in violence as tensions reach a boiling point in ukraine. Prorussian groups said one of their points came under attack. A shootout ensued. Six people dead. All of this a day after Vice President biden making a show for ukraines government. Break overnight. Quite a mystery. The fbi is investigating a teen stowaway who they say stowed away in a jet from california to maui. The 16yearold subvieved conditions despite a lack of oxygen and frigid temperatures. The teen reportedly ran away from his family. Hes now being taken care of by Child Protective Services in hawaii. The entire climbing seen on mt. Everest could be cancelled after the deadly avalanche. Thats because sherpa guides who guide to the tallest mountain are threatening to go on strike. At least 13 sherpa guides died. Theyre upset with the failure to compensate the families. Apparently up to 400. The worst in history. We remember the winged suit flyer who was going to do a jub on discovery, theyve cancelled that. Just a dangerous game. All right. Lets come back home here and tune into what is supposed to be just a spectacular, the best ever in terms of how many people are going to watch, the Boston Marathon. Of course, we all know its one year since those deadly bombs tore apart the finish line up there in boston. But today say new day. Theyre expecting a Record Number of spectators. So security will be impressive at the race. Thousands of officers will be monitoring what theyre calling a ring of steel, surrounding the 36,000 runners. Well, less than three hours away from start time. John berman on the scene at the marathon starting point in hopkins, massachusetts. Reporter the population triples here with 36,000 runners showing up. Where it is begin says metaphor today. Its a new beginning for this race and this area as people reclaim the Boston Marathon as a celebration, turn the frag the terror that was one year ago where three people were killed at the finish line. This race, as we said, some 36,000 people will be running. 1 Million People will be watching. And as for security, they are ready. Reporter the security here unprecedented. Were going to have plenty of assets. And if need be, theyll be rolling in very quickly. Reporter more than 3500 Police Officers uniformed and under water patrolling the streets. 100 more security cams are in place to watch the huge crowd. The eye eyes of the whole world on boston for the 118th marathon. Organizers expecting a record turnout with about 1 million spectators lining the 26. 2mile coarse. Theyll be cheering on 36,000 runners. Thats 9,000 more than last year. Many looking for their student to finally cross that finish line. Its very emotional because i was right on boylston street when the second bomb went off. So, it means a lot to be able to come back and hopefully finish, cross the finish line this year. Reporter other runners injured in the blast now show what it mean to be boston strong. It means above all that we never, ever give in to anything. Reporter a renewed sense of pride and purpose, after the bombings during last years race. Three people were killed that day. The white family was among 264 who were injured. Mary jo suffered a wron wrist. Her husband bill lost his leg. Son kevin had shrapnel all through his body. But thats not stopping him from running this year. Any fears of being at the finish line . If i have any, theyre pretty far back. So im not really developiwelli them. I also think its going to be one safest places that day. Its going to be one of the safest places in history ever. Reporter so kevin white who is running told me that today is a day when tears of pain will be replaced by tears of joy. Hes so excited for this race. Hes actually signed up for his second marathon a few months from now. Security will be will be unprecedented. Fans are told they can have backpacks and strollers just be smart about it. Make security easier for the people patrolling the streets but today very much a celebration. Theres a sensitivity up there. I saw you running with kevin. You looked john, j. B. , i was surprised youre not entering the race. I know your commitment to cnn is the only reason youre not doing it this year. Youre in shape. Its the only reason. And 1 Million People are turning out to see this. Thats a testament. That will be the record. I dont think theyll have a Record Number of runners. I think its more impressive theyre going to have a Record Number of spectators. Boston is always seen as a huge city. Our thanks to j. B. , well be back to him. Theres an intimacy up there as well. You really feel it when youre up there. Theyve put it together the way few cities have ever put it together. And to Indra Petersons tracking the forecast. Hows it look in boston . Chris, i know why youre not doing it. Because there are no blueberry doughnuts in boston. They had a blueberry fix like this, i would chase it 26 miles. From what i understand, great running conditions from the runners ive talked to. 50s for the highs. Nice temperatures even by 3 00, theyre still out there, high of 61. The rain is in the west. Clear in the east. Great in new york city and boston all the way down the east coast. Thats going to stay that way for tomorrow, though. Tomorrow night, the rain gets to boston philadelphia, and d. C. , let it go there. High pressure backing that. A nice couple of days for the east coast. A stormy couple of days for the midwest. Weve had almost a record low number of tornadoes so far this year. Lets hope that doesnt change this week. There will be a severe chance of weather later on today. Thanks, jeff. Lets take a little break on new day. We now know theyre twothirds of the way done. And no sign of flight 370 on the floor. So is there a plan . If this last third doesnt reveal anything. Were going to talk to the experts and take the best guess. Plus, more deaths after the deadly accident in south korea. The countrys president suggesting actions by the captain and his crew were askin to murder. New questions on what went wrong and if it could happen here. [ female announcer ] f provokes lust. It elicits pride. Incites envy. And unleashes wrath. Temptation comes in many heartpounding forms. But only one letter. F. The performance marque from lexus. Because the more you know, the more we can help you. Cut. Lower. Shave. Chop. And drop your insurance rates. If you want to save hundreds, talk to farmers. We are farmers bum pa dum, bum bum bum bum [announcer] the more you know, the more you could save. Farmers could help you save hundreds on your auto insurance. Call your local agent or 18004708496 today. Welcome back to new day. New developments this morning in the search for flight 370. Overnight, the bluefin 21 went back into the water to scan the ocean floor for debris. Twothirds of the underwater search hear has now been covered by the bluefin, but with no points of interest thats how they describe it no points of interest pound. Joining to us discuss, mary schiavo, former aviation expert and department of transportation. And david gallo cnn director it the woods hole institution. David, let me start with you, were now in its ninth mission, the bluefin. And the conversation continues which means we need a couple days fw days. Twothirds of the day one. Focusing on a sixmile radius. If they dont find debris, what would you suggest is the next step . I dont want to cut them short. They do have a third to go. Theyve gotten the bugs out of the system. Theres a ring them in to the operation and now is the time frame. And they are in the prime time so keep our fingers crossed and prayers with them. The next is if this doesnt pan out, its regrouping sitting back with that white board and wondering what do we do next, do we expand this area or go to another area altogether. And there a Tropical Cyclone in the area, david. Northwest of the area, its not a direct hit of any kind but what would be the impact of that wind, of that rain, on the search efforts . Yeah, i hope that stays well clear of here. I took a look at the weather, predicted weather, wind and waves for that area. It doesnt look like its going to have that big of an impact on them. Any kind of wind or waves is going to slow things down quite a bit and if it gets too bad, its going to slow them down for a couple days. Thats the last thing we need. Marry i want to get your take on, but it seems small, but every small detail works in the assumption of where we think the plane went and the flight path it took. Were now told, sources are telling cnn, that initial turf is so important where the plane ended up. Within Vietnamese Air pace. Well over the water. It remains at 39,000 feet for for 20 minutes before the malay peninsula, how does that change, if at all, our working assumption of what we know happened to the plane . Well, it changes, i guess a lot of theories, shall we call it, of what people thought may have caused the plane to do what it did. And that is initially, people were theorizing its something nefarious was going on board. They had to make that lefthand turn after the handoff from the control, but before they entered Vietnamese Airspace because the theory, something doing somebody nefarious in the cockpit would want to make that change before being picked up by Vietnamese Airspace. Now, apparently, its not that at all. This actually happened in Vietnamese Airspace without them seeing anything. And then another set of altitude data, this is the third or fourth different set of altitude data. But again, it does not have them climbing orr descending down below the commercial traffic area. Which included components of where they got down and out of the way of other air traffic, to carry out whatever it was that people were theorizing they were carrying out. So i think once again, this changes a lot of assumptions that people had. But it doesnt change the basic facts in what happened to the aircraft and they have to find where it ended up. Does this tell you, mary, anything about the course of the investigation . I think we all go back and checked our notes. I was surprised to see yet another set of altitude data coming out. Making sure i had this correct this time of around. In the course of a typical crash investigation, does altitude and these kind of basic facts, it seems, does it cha