of the pilot. the background checks continue. there was a civil aviation engineer on that flight and as far as the search is concerned, 26 countries are now involved in this search, 11 countries over land getting reports about radar sightings or nonsightings, the indian ks and the pakistanis saying they haven't seen anything. still waiting for more information on that. the malaysians are saying that they are getting cooperation with the countries involved in the search and the plane's potential overflight. at this stage we don't know to what degree. are they giving up sensitive radar satellite information to them that's track this plane. >> we've seen video of the two pilots going through security to board the airliner, the boeing 777. there you see the video they're going through some security checks. they have not released the actual video of the malaysian airliner taking off from the

kuala lumpur airport. i assume they have closed-circuit video of all landings and takeoffs of that airport, but they haven't released that video if they have it, is that right? >> reporter: that's right, wolf. no video has surfaced yet. i can't confirm whether they have that video, but i think it would be likely that they would have that as part of security and as part of anything, anything untoward, they can immediately check what's going on at that airport. it just goes to the whole heart of this -- the outflow of information from the authorities here. their point is we don't give anything out unless we can verify and corroborate it. so in this vacuum of facts we're getting a lot of theory, conjecture. is it the hijack theory, terrorist theory, mechanical failure, the suicide theory. all of them still have massive question marks.

for example, if it was a suicide, why did the plane continue to fly for seven hours? if it was a hijacking, why don't we know what the hijackers wanted? if it was mechanical failure, still a lot of question marks around that. if it was a terror attack, why don't we know about responsibility and what they were trying to achieve there. massive question marks. we're going to the 12th day and we still know so little. >> it's an amazing, amazing story. andrew stevens reporting for us from kuala lumpur. all of this certainly leaves loved ones of the passengers in excruciating limbo, uncertain of what has become of those on board flight 370 and 239 people were on board that flight. david mckenzie is joining us from beijing. you spoke with the partner of philip wood, one of the three americans on that aircraft. she tells you she believes wood

is still alive, right? >> reporter: that's right, wolf. she's certain he's alive based on her logic and on her gut feel. sarah bajc is a former high powered businesswoman, she's now a teacher here in beijing. they were planning to move together to kuala lumpur soon before -- soon after this plane vanished, and she says she believes he's alive and well somewhere out there. >> the entire u.s. population is reliving things like 9/11 in this experience, right? if an unthinkable thing can happen even after we've taken all these precautions, what could happen next? this is a planned activity. somebody wants to do something and make a message out of it. it would serve them no good to be seen as callous and brutal and just start killing people unnecessarily because they won't have as much bargaining power, i

think. i think. i mean, i can't imagine to put myself into the mind-set of somebody who would possibly even contemplate this but i've got to believe that the hostages are valuable to them. as the only adult american on the flight, philip would be a valuable asset to them. and it happens to be that he's also very calm and very put together and he would know to step back and, you know, not cause any conflict so he wouldn't be somebody that they would want to get out of the way as a trouble causer. if there's anybody that can survive a situation like that, it's him. he's very level headed, and i think he is the kind of person who would help to calm a really chaotic situation. of course, i have to prepare for the worst because no matter what, i still have to go forward and no matter what, his family still has to go forward. so we need to know where that fork in the road is going to go.

and we're not ready to take either branch, but we have to know what's coming because otherwise when it comes, you won't be prepared and that's when you get into trouble, i think. >> you need to be prepared for whatever the news is? >> mm-hmm. my bag is packed and ready to go. it has been since saturday morning. >> ready to go where? >> wherever he is. my son even helped me pick out which clothes to bring for him. so i have an outfit for him in my backpack, because he wouldn't want to wear his dirty old stuff any more, i'm sure and he probably wouldn't want to wear a hospital gown if that's the case. so yeah, it's all ready. >> well, sarah believes he's alive. she feels that direct connection with him, wolf. it's quite poignant to see that, but she's also a logical,

intelligent person and she says though family and friends tell her that she's in denial, she says the facts out there suggest to her that he might be out there somewhere, too, so she's going to cling to that hope. she started a facebook page and twitter site, finding philip wood, so that people can come in and share information. she's trying to figure this out like a mystery like many of us are as well. >> that's one story. 238 others were on that flight and i suppose their families, their loved ones feel the same way. have you had a chance to speak with others to get their sense, their reaction to this excruciatingly difficult ordeal they're going through? >> well, wolf, there's all ranges of emotion. yes, i've spoken to many family members and friends of those on board. some of them are angry, some are frustrated. some are pointing fingers at the

malaysian government and authorities. you've seen these chinese family members here in beijing stuck in a hotel, hundreds of them at times, sometimes coming to physical blows with the airline staff. so yes the frustration is boiling over at times, but with such a long wait and all these, you know, roller coaster of emotions, at this point it's kind of getting into a rhythm of some kind, but with every new lead, they really hope for the best but frankly expect the worst. >> a heartbreaking story indeed. david mckenzie reporting for us from beijing. we'll hear much more from philip woods' partner later. she'll be a guest at 8:00 p.m. eastern only here on cnn. showing the pilots going through security as the investigation focuses in on two men in charge of the vanished plane. plus why we may never know what

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you're watching a "situation room" special report, the mystery of flight 370. it's been 11 days since the last transmission from the plane. while mechanical failure still can't be ruled out, the dramatic change in the flight path would seem to suggest the plane was intentionally flown off course. it's leading investigators to turn their focus back to the two men who left kuala lumpur in control of the aircraft, the

pilots. joe johns is here. he's been digging into their background. >> we are learning bits and pieces about the lives of the pilots. for example, the captain of the 777 has been called a silent member of a malaysian opposition political party, but so far no signs pointing to malicious intent in the cockpit. surveillance video posted on social media appears to show the captain and first officer of flight 370 passing through airport security. cnn cannot confirm the authenticity of this video or exactly when it was shot. it doesn't show the men doing anything unusual, but the two are now facing intense scrutiny by investigators. >> on sunday night march, police officers visited the homes of the pilot and the co-pilot. they spoke to the family members of the pilot and co-pilot. police visited the homes of the pilot and co-pilot again on saturday. >> reporter: police have now searched the homes of both.

authorities in plainclothes seen leaving the residence of fariq hamid and later seizing the flight simulator from captain zaharie shah. >> a reflection of his love for flying. >> reporter: investigators are interested in the simulated routes the pilot may have been flying that could still be on the simulator's hard drive. >> the other thing that could be important is whether the pilot trained anyone else on the simulator. >> reporter: investigating the pilots requires a deep dive into their health and personal history, bank accounts, recent life insurance purchases, divorces, separations. >> there could be a number of things that cause personal stress and under severe stress a person can do bad things. >> reporter: it hasn't been easy. hamid is described as a humble man with less than 3,000 hours of flight experience who lives on the outskirts of kuala lumpur.

zaharie is described as an experienced pilot. his family posted this tribute on youtube. he's been described as politically active, a member of the opposition party, but neither suggests a motive in either man to fly a jumbo jet off course and make it disappear pilots generally get psychological screening. if there are any issues is it's up to the pilots to actually report it. >> stand by. i want to bring in peter bergen and also michael schmidt of "the new york times." peter, intriguing comment today from mike mccall, the chairman of the house homeland security committee. he was on cnn's "new day" this morning and he said this. >> one is that it got turned back for whatever reason we don't know, but it ran out of fuel and it landed in the indian ocean where they're searching today. the other possible theory but

more unlikely is that it landed somewhere to hook up with potential terrorists to use it as a weapon, as a cruise missile in a future terrorist attack. >> is that credible, you think, that the plane land somewhere, terrorists got hold of it, they'll refuel it and use it as a missile in a terrorist attack down the road? >> i don't think it's that credible. if you think of the countries this plane may have gone over. think pakistan, the osama bin laden raid. the u.s. flew stealth helicopters at night. because they were so concerned about the pakistani radar. each of those countries have similarly good radar systems. the idea you can waltz over them with a 777 just doesn't pass the commonsense test. >> you've been reporting a lot on the malaysian investigation, some of the frustration the other countries, including the u.s. is feeling now about how

this investigation is going. what are you hearing? >> the u.s. is still really on the outside looking in. this is pretty frustrating for them. they say hey we're great at looking at computers and forensics, but the malaysians haven't asked us for help. in regards to the terrorism question, someone told me -- a law enforcement official told me if this is terrorism it's like nothing we've ever seen before. no chatter coming in, no responsibility afterwards. because of that they say, hey, this may be a new paradigm but until we see that, we're not going to look at it that way. >> they're not ruling it out including the cia director they're not ruling out terrorism by any means or whatever phrase he used. not at all. >> they have to build themselves some room. because if this turns out to be terrorism, they don't want to look like they're on the wrong side of this thing. but at the end of the day they've looked back, gone through the signals intelligence, gone through everything in the databases

about everyone on the flight, the fbi's done interviews and they don't have anything that leads them to believe that. >> the audio and communications coming in from this flight, are they going through that? are they trying to determine first 40 minutes there was communications between these two pilots and ground control? >> absolutely. and that's something that investigators say is very important. the notion that there was chatter in the cockpit, it was recorded. is there any stress in the voice of the pilots? and do you hear anything in the background, anything unusual, someone else there, any sign of trouble in the cockpit? this is something a lot of investigators are saying needs to be looked at if it hasn't been already. >> they should look at all this stuff. thanks very much. coming up key communications systems on the flight stopped working shortly after takeoff. we'll go inside the cockpit of the 777 to figure out how it might have happened as our special report, the mystery of flight 370 continues. dear sun,

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you have to get down into the electronics. you have to know something about the construction of the aircraft. get down into the electronics bay and figure out how to unplug it. did somebody do that? we don't know. we do know the system was disabled, wolf. >> it could be disabled from the cockpit. >> thanks very much martin savidge in that 777 simulator. cnn is digging into what political ties the pilots may have had. our "situation room" special report continues. so our business can be on at&t's network for $175 a month? yup. all 5 of you for $175. our clients need a lot of attention. there's unlimited talk and text. we're working deals all day. you get 10 gigabytes of data to share.

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we will have much more on the missing plane. first let's take a quick look at other stories. the u.s. and european union announced sanctioned for the role in the crimea crisis. many don't believe the vote was legitimate. a third person has died from last week's crash at the south by southwest festival in austin, texas, police identified her as a 26-year-old woman. police say she drove into a crowd of people while intoxicated after refusing to stop when an officer tried to

pull him over. 23 people were also hospitalized. general motors is announcing three new recalls. most are popular crossover suvs. the auto maker is recalling some cadillac sedans and full-sized sedans. gm has been under fire recently for knowing about a deadly ignition switch problem for a decade. more problems. >> we are having an earthquake. >> that is ktla in los angeles as an earthquake hit. at least six after shocks followed, the strongest of which was a magnitude 2.7. good news, there are no reports of casualties or serious damage. remember, you can always follow

us on twitter. you can tweet the show. in the meantime thanks very much for watching. i'm wolf blitzer in washington. we'll see you back here tomorrow erin burnett outfront starts right now. new details on missing malaysian airlines flight 370 could the pilots political ties be a factor in why the plane is gone. one of the craziest theories yet on how the plane stayed hidden from radar and hear from a partner of an american on board the jet. why she believes her soul mate might still be alive. let's go outfront. good evening. i'm erin burnett. new information on the pilot of missing flight 370 and major questions about his