Costello, i welcome our viewers in the United States and all around the world. A big break for investigators and heart break for the families of all those on board. Egyptian military says it has found debris, located about 180 miles offer the coast of alexandria. This, as executives met with relatives of the victims, Company Leaders offered their help and briefed the families on the investigation. But the biggest question, what caused the crash that remains unanswered. Terror does remain the leading suspicion. Were hearing that from officials here in the United States as well as egypt. Charles de gaulle airport where the flight began its journey is bolstering its security with 30 more Intelligence Officers, the government not clarifying the reason. Security had already been increased after the paris attacks last november. Were going to bring you all the latest developments with our aviation experts. Cnn Nic Robertson live on the phone from the island of crete. Nick, what can you tell us this morning . Well, the very latest we have john comes from the Greek Ministry of defense confirming what were also hearing from egyptian officials, and that is some debris has been found, specifically this of course, the tragic news for the families. They have found some of the remains of a passenger. They have found a part of a seat. They have pinpoint in the map, in this large body of water, the med t mediterranean, and it will help in the recover remissions. The greek government is basing their assistance in crete, for the egyptians, basing and flying two c130 aircraft out of the military base. Theyre also offering the military base to allies, for them to base it, base aircraft, if they want to get involved in this effort. This a Multi National effort. The United States are running Surveillance Aircraft, greek surveillance involved, the british navy has a a vessel, theyve gone to the area of the debris field and aiding in the discovery efforts. Greek an italian, cypress is also making efforts. Some of the debris has been found, tragic details that we now know that the parts of remains are beginning to be found. Of course, the plane as expected has gone to the bottom of the ocean. Thats where the voice recorder data recorder will be. But the biggest lead in the biggest clue that could come and we have to stress this, could come, would be the discovery of a piece of fuselage that shows some kind of blast that perhaps could be tested for residue that might indicate an explosive. That would be the quickest way that investigators might get an early lead on what brought the aircraft down. But at the moment, all bets are off. No one is able to pinpoint precisely what happened yet, john. Any sense of the size of the debris field or the number of pieces that were talking about here . It sounds so far, john, limited number of pieces. Thats what we have information about so far. And the actual size of the debris field, that is still not clear to us. The early indications are that debris was a little distance away from where the aircraft was last spotted on radar. We know about 180 miles off the coast of egypt, about 130 miles off the coast of the nearest large greek island. The size of the debris field, we understand because of currents in the mediterranean, it wont spread out as much as it might in a larger ocean, larger body of water, john. Nic, one other piece of information this morning. The European Satellite Agency is telling us that it spotted an oil slick in that same area where they believe the plane did go down. Any information you can give us on that . We dont have information on that additionally yet. Its not clear if that oil slick is associated with the aircraft coming down. We do know that that would be typical of such a crash in water, that either hydraulic fluid or Aviation Fuel can leak out of the aircraft. That can leave a visible trace. Obviously, all of it will be a great help for the greeks flying there, air reconnaissance for the United States p3 aircraft in the air above the debris field. All right, Nic Robertson headed to the maun taiountains s being used for the recovery operation. Nic, thanks so much. Well check back in with you in a little bit. Moments ago, the family of the copilot spoke with cnn. Live at Cairo International airport with what they had to say. Hello, ian. Hi, john, yes, today being friday, the egyptians muslims gathered for friday prayer. Thats where i met a lot of the family members of the crew that were on that plane. Some of them didnt show up, because they still have yet to believe that their loved ones are gone, but those i was able to talk to described the copilot as being someone who was full of life. A loving person. One uncle said that he basically helped raise the copilot after his mother died. Take a listen to more of what he had to say. Can you tell me about your nephew. Give me some words. What kind of a man was he . Again, he was absolutely very kind person, and never see a guy in his age in his humanity and sense of humor. I would say he was the only one that was really he said so. Really very much unfortunate, and there is not big incident for only us as a family, but as you can see, the entire country is really sad about it. And john, i talked to another uncle as well. And he expressed frustration. Basically that people are assuming or maybe throwing out the theory that it could have been the pilot or copilot. They said that couldnt be further from the truth. That these men were honorable men. They were loved men. There was a great, large gathering of people coming out to support their families, they said they have many friends and family, and that the theory that it could have been the pilot or copilot bringing down a plane is basically insulting. They were also wanting to know why with this plane originating from paris, why hasnt there been more focus on paris and what is happening there. Really, the families and friends, were trying to come to grips of actually what happened, and again, some of the family members didnt even show up, even though they were praying for their souls. Some of the family members are still in disbelief that theyre dead, waiting be against all odds to hear and hope that their loved ones could be found. But as it looks like now, it doesnt seem like anyone will be found alive. Ian lee for us in cairo. Thanks so much. He was just saying what about paris. What about the last location where this plane took off from Charles De Gaulle airport, a lot of focus on that site this morning. There with the very latest, atika, investigators pouring through anyone on the plane, anyone who worked on the plane, anyone who worked at the airport in general. Reporter absolutely. What theyve done, investigators already started interviewing anybody who might have had access to the plane that includes baggage land handlers, caterers, what we do know is that the plane was checked before it left. That means people went through checkpoint, anything may have been left behind. Investigators are going back over that to see if anything was missed. Now, Charles De Gaulle airport has some of the most stringent security in europe. Anybody who wants to access those restricted areas that has to go through screening. Not just passengers, the checks you and i go through for liquids or laptops. All the employees have to go through there to get a red badge to get into the area. As has been pointed out, airport authorities admit, nothing is ever 100 water tight. Anything at all might have been missed. Going over everything is a huge task, atika, more than 80,000 workers have some kind of clearance at Charles De Gaulle airport . Reporter exactly. 85,000 exactly have in Charles De Gaulle airport, and they have access to those restricted areas. So it is a tremendous task to screen all of those people. Remember, in order to just get that badge, you need to have police screening, you need to have another check as well. And then there are sort of the rand random pe random period cal checks, and in december, actually and over the last few months they have been doing reviews of personnel here, and they have in fact revoked the security badges of some 85 people for fears that they may have had links or may have been security risks linked to radical islamists. Atika, well check back with you throughout the day as the Investigation Continues there. As search crews retrieve the wreckage, how quickly will authority be be able to fickgur out what happened. Lets speak to mary schiavo, bob barry, and and miles obrien here in new york. Mary, i want to start with you, a twopart operation going on now, trying to retrieve and locate the wreckage and then once you have it, to analyze it. What are the first thing you can tell from pieces of debris and wreckage after you find it . Well, generally three kinds of things. First and foremost, the human remains. Thats important for two reasons. One, for rirning eturning to th families for proper memorials, but the injuries on the body, any residue, any kind of injuries to the bodies, if it was blunt force, burning, et cetera. And then second, for the aircraft parts, thats very, very important, both to rule in and to rule out terrorism. Flight 587, november 2001, it was very important to find the tail pieces of the plane to rule out terrorism and then they will use the parts to track back on the flow pattern to find the all important black boxes, probably at the point of entry into the water. Miles obrien, Nic Robertson told us there is a limited number of pieces of debris they found so far, possibly a chair, personalin personal belongsing, they spotted an oil slick near the location where they believe the flight went down. Anything you can determine by these first pieces of evidence that are being identified . Well, it seems like the usual things you would see. Things that float, oil sliks, all predictable. The stuff that is of thats interesting on its own right, because you can take that location, and reverse engineer the drift patterns, and that should take you to the point of impact and thats the first place you would be listening for the pings, where the real answers lie. Meanwhile, control surfaces, in air france 447, the vertical tab r stabilizer floated and so pieces like that can actually rise to the surface. While were waiting to find the black boxes, those pieces of wreckage can provide valuable data. Did they bend outward, indicating an explosion. Aerodynamic, more of impact type of failure when it hit the surface of the water. Lets bring you into the discussion, bob. In terms of trying to connect this to terrorism, if there is a connection, there has been no evidence that we have seen so far. No concrete evidence. No claim of responsibility. Nothing turning up on the passenger manifest. No clues having to do with the flight crew. What does that tell you . Well, its too early. First of all, we all agree, explosive residue or the effect of a blast, that will take a couple of weeks, get to the black box. But you know, actually going through the passenger lists, i mean, its not, you know, theyre not absolutely certain that somebody wasnt related to al qaeda or the islamic state. I mean, these going through these lists is very superficial. And then you have to go through paris airport, the simplest place to put on a bomb with a timer. But somebody making these things could have put it in cairo or tunisia, a previous stop. Were a long way away from determining what happened to the airplane. 30 Intelligence Officers added to Charles De Gaulle airport today, theyll be put in place over the next several days. 30 doesnt seem like an awful lot. It seems perhaps more like a token move there. But can that make a difference at that airport if there are legitimate concerns there . Certainly, especially if they put the security agents in the air side or the nonpublic parts of the airport. If its suspected that perhaps some of these some persons with alleged terrorist ties, the person stripped of their security badges, persons within the airports or recruits will be very important for the security agents to focus on the workers rather than the passengers. And after september 11th, 2001, were always looking at passengers. The biggest loophole and the biggest shortages in security are the airport workers themselves. That would help to focus on them. Miles, about the location of the debris field, the debris as exists in the mediterranean, about where they believe the plane disappeared from the radar, look, obviously mh flight 370 is the one in everyones minds. They were looking for the wreckage thousands of miles away. The pieces showed up where you thought they might. A black swan, mh370 was. The last known position, you go out and look, and in short order in this case, you find debris and backtrack there to the wreckage at the bottom of the ocean. So hopefully before too long, certainly within the 30 day window that pinging noise will be emitted by the black boxes well within the period of time well be able to get onsite and into the boxes. Bob, last question. What do you think the current u. S. Involvement is in terms of this investigation right now with being led i assume by the egyptians and by the greeks, but the french involvement as well, since thats the airport. What do you suspect as far as u. S. Involvement . Oh, the u. S. Is all over this, because if the bomb was put on in paris, that means american airplanes are vulnerable. Anything that goes across the atlantic. And we, you know, working closely with the french to figure out if they have a problem in the airport, because if they do, we clearly have a problem. Major european transportation hubs, if there is a problem at Charles De Gaulle airport, Richard Quest has been saying, it changes the entire ball game here. All right, mary, brian, miles, thanks for being with us. Still to come, what could have caused the crash and if terrorists might be behind it. If they are behind it, how did they do it . man what i love most about tempurpedic mattresses is that they contour to your body. I just have to lay back in my tempurpedic and it just kind of forms to my body. Thats what i love about it. The tempurpedic comes up to you and its like, hey, there you are hey, there you are im going to put you to sleep now. Here you go. 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You have people all over, particularly in europe. What are they telling you . Reporter well, john, its really unclear whether this was terrorism at this point. There is no solid evidence that this is terrorism, by solid evidence, youre looking at forensic examination of the wreckage for some kind of sign of explosion or flash signature picked up by satellites. Explosion, weve had no claim of responsibility, more than 36 hours after that event. It is indeed puzzling, because isis has been very triggerhappy when it comes to putting out claims of responsibility. Metrojet in october, it took them five hours to put out a claim of responsibility. They claimed all sorts of operations of attacks in the middle east in the time since this plane went down. But deaf en deafenning silence. Al qaeda, but it would be surprising for al qaeda to at thattic th this day over telegram channels and so on and so forth. So that is definitely puzzling, counterterrorism analysts. It may be an indication that perhaps it isnt terrorism after all. What is the point of bringing down a plane from a it terrorist, if you arent going to bask in the glory of such an act. This is the holy grail for terrorist groups. This would be one of the biggest accomplishments in the history of terrorism. These are the reasons it keeps being asked. Paul, there is a desire by isis and al qaeda to target the Aviation Community and air flights all over europe. Again, with the flight originating in paris, headed to cairo, those are two nations that have been targeted. Reporter absolutely right. Both from al qaeda and isis, a desire to bring down commercial aircraft passenger jets. It gives a huge Impact Global headlines and impacts on the economy. But it has been al qaeda that has led the way trying to develop sophisticated devices to try to beat airport security, particularly yemen, their master bomb maker developing new underwear devices, shoe bombs, even experimenting with surgically implanting bombs inside human beings, concern that that group in yemen has shared this technology with its affiliates in syria and somalia, and this i