This procedure. But first, the nightline 5. Never before has this kind of passion, this kind of innovation engineering, design and performance been available for this kind of price. The 2015 cla from see your authorized dealer for exceptional offers. Number one in just 60 seconds. Tonight the investigation into that deadly plane crash in the frerch alps is focusing on one man, the pilot who allegedly brought the jet down deliberately with 149 other people on board. All the while the captain locked out pounding desperately on the door. So what could have motivated this apparent mass murder . What kind of protection do flights here in america have against a kilner the cockpit . Heres abcs david kerley. Reporter these Haunting Images are the first weve seen up close of the twisted metal and shattered debris. All that is left of Germanwings Flight 9525. Tattered clothing. A circuit board. Severed chunks of a broken machine. The plane mysteriously crashed into the rugged french alps on tuesday, killing all 150 souls on board. But now a recording from that battered black box recovered from the wreckage may reveal the shocking, horrible truth this tragedy was apparently no accident. In an emotional News Conference the french prosecutor said the flights 27yearold copilot Andreas Lubitz lock the captain out of the cockpit and then deliberately crashed the plane. In the final moments before impact screaming passengers heard on the recording a dragic end to a flight that began routinely. A 10 00 a. M. Takeoff from barcelona. Everything seems normal. The cockpit voice recorder showing a friendly conversation between the two pilots. But then the copilot lubitz is less jovial his answers short. 30 minutes into the flight, the jet hits cruising altitude 38,000 feet. The captain asks lubitz to take over presumably to use the bathroom, and leaves the cockpit. Starting the ten minutes of horror. Once alone with the door locked flight tracking data shows the copilot changes the auto pilot sending the jetliner down toward the alps. Outside the cockpit the captain feels the plane descending. He knocks on the door no answer. He starts banging as if trying to break the door down. Silence from the copilot. But on the recording lubitz can be heard breathing normally. Seconds tick by. The jet dropping more than 3,000 feet a minute. Closing in on the mountains in plain view of the passengers as they plummet to their deaths. Abcs Hamish Mcdonald was at the crash site as grieving families began to arrive. This is the convoy of families coming to visit the site of the crash. There will be a mountainside vigil here. This is about as close as these families will come to seeing the location that this plane went down. Reporter among the victims three americans, including emily selky, traveling with her mother yvonne traveling from barcelona to dusseldorf, and oliver living in spain. Why couldnt the captain get back into the cockpit . Since the terrorist attacks of 9 11 commercial aircraft including Germanwings Airbus a320, have a nearly impenetrable cockpit door. After 9 11 what we were trying to do is make sure the bad guys couldnt get into the cockpit. They reinforced the door where you couldnt even blow it off the hinges. Reporter there are Strict Lockdown procedures in case of emergency. The new reinforced phase two cockpit door reporter as this airbus demonstration video explains once the cockpit door is locked from the inside this code pad provides increased security levels. Reporter a digital code is required to get back in. The red light is lit confirming the door is locked. Reporter but even then the pilot inside the cockpit can block reentry for five minutes. Of course along with that comes the problem, what happens if you need to get into the cockpit and nobody inside is able to let you in . Or worse, a situation like we have here when are somebodys denying access . Reporter u. S. Regulations require two people always remain in the cockpit. If one pilot exits, a relief pilot or Flight Attendant must take their place. This was not the policy of germanwings. Not all the International Air carriers follow that no lone zone rule. We may be fairly unique in the united states. I think thats going to change. Reporter tonight, some international carriers, including air can canada norwegian air, are changing their policy to match that of the u. S. There are Big Questions now about lubitzs state of mind. The Airlines Says he was 100 fit to fly, doing some of his training in the u. S. The ceo saying his performance was without criticism. Not at all striking. The airline adds he underwent a rigorous psychological examination as part of his training and there were no red flags. Which has many now wondering about the quality of psychological screenings of pilots across all airlines. This is not the first time a pilot has killed himself and murdered those on board. It happened in an egypt air crash and is one of the theories of what may have happened to Malaysia Airlines flight 370 which still has not been found. The psychological screening process for a flight crew member varies significantly from air carrier to air carrier. Reporter Antonio Cortes is a former commercial pilot and trainer with 24 years of experience. He says there is a lack of consistency for psychological testing. Sometimes it can be a rather cursory sort of assessment by maybe a psychologist assigned to the interview team. Other times it can be a rather robust set of questions to establish sort of the psychological makeup of the individual. Reporter the association that represents most major u. S. Airlines, including delta, American United said in a statement that their pilots undergo rigorous evaluations in the hiring process. And the faa requires pilots to disclose all existing Psychological Conditions and medications. But the same is not always true for pilots on international carriers. There is no standard within certain countries industries, much less across the globe. The major psychological screening for Airline Pilots is only in the hiring phase. After that there is no particular routine screening or rescreening of people. One of the reasons is youre not really going to be able to find a way to do this effectively. Its much more effective to have everybody watching everybody else. Reporter lubitzs facebook page, taken down earlier today, offered no signs of Emotional Distress or clues of the tragedy to come. Today my colleague terry moran, followed lubitzs trail, driving through the german countryside from dusseldorf where he had an apartment to his hometown in the shadow of a castle. This is the small air trap where Andreas Lubitz learned how to fly. The flight club remembers him here. They say it was his lifelong dream to become a pilot. Reporter the chairman of his Aviation Club says he was a very calm, responsible man. He lived most of the time with his parents on a quiet street in a development. Now the shutters closed keeping prying eyes out as police carry out suitcases. Neighbors stunned. Hes not the type of guy who would try to kill other people absolutely not. Another neighbor says he simply cant believe it. He was a young and healthy man, or at least he appeared to be very healthy. Investigators are still searching for the flight data recorder in the wreckage. They hope it will help them piece together those final terrifying moments. And maybe answer the question, why . For nightline, im david kerley in new york. Up next on nightline, after emerging triumphant and engaged from the latest season of the bat error, Whitney Bischoff reveals she froze her eggs two years ago as a precaution. This is an increasingly popular procedure. 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Music etta james at last plays throughout sometimes, at last doesnt happen at first. Your dad just kissed my mom. Turning two worlds into one takes love. Helping protect that world takes state farm. After Whitney Bischoff said yes during the finale of the bachelor she then said it was now time for her and her farmer fiance chris to make some babies. Tonight were learning more about how serious she was. Years before her reality tv debut she froze her eggs. Egg freezing was become a big business but is it for everyone . Heres linzie janis. Reporter these 30somethings are posting to the future of their fertility. Tell us about your eggs reporter theyre here to learn about freezing their eggs. I am ecstatic to see so many young women here tonight. Reporter Marketing Company egg banks hosts swanky parties like these all over the country. Im not married now and im not really in a steady relationship. So its another option. Reporter teaching women the dream of having it all. Their slogan lean in but freeze first. The fertility industry is worth 4 billion. Because now more than ever women are delaying child birdbirthchildbirth. Many havent found the right partner. Others want to focus on careers. Some just arent ready. Will you marry me . Absolutely. Reporter 29yearold Whitney Bischoff recently found the love of her life on abcs the bachelor. Were going to make some babies. Oh, yes. Reporter but two years ago, the fertility nurse decided to freeze her eggs just in case. A huge sense of relief. I just felt it would be silly for me not to take the opportunity when it was handed to me. Reporter whitney says seeing patients struggle to conceive on their own made her want to take control. You hear patients say, i just wish i would have known, i wish someone would have told me. I felt like i needed to walk the talk. I felt like i, you know was taking control of my career and taking control of other aspects of my life. For me it just was giving me options for my future. Reporter her doctor says women as young as 20 should consider freezing their eggs too. I think its applicable to any woman in her 20s or 30s whos thinking forward about her fertility potential and wants to sustain her reproductive age. Because theres such a dropoff in pregnancy rates as women get older. You might get pregnant on your own at 35, but what about your second child . Youre 38, 39. Now it drops down significantly. Reporter but its an expensive and arduous procedure. 10,000 for medications and initial extraction. 500 per year to freeze and store the eggs. And when youre finally ready to have a baby it costs about 5,000 to thaw fertilize, and transfer the egg to your uterus. It usually takes multiple tries. In the end the procedure can cost anywhere between 25,000 and 50,000. And even after putting your body through the drugs and the procedure and spending all that money, theres no guarantee. I think as physicians weve got to be careful that we set expectations. Theres disappointments. It might not work. But if you can afford it it is hard for me to understand why someone would not do it. Reporter but the technology is relatively new. And there isnt Much Research on how well it actually works. In the last 30 years, there have been only 5,000 babies born worldwide through egg freezing. Medical researcher colleen coglin showed my colleague linsey davis how it works. As soon as the egg is retrieved we bathe the egg in this solution which is very similar to an antifreeze solution. That is little dot that little dot at 9 00 thats the egg. Its put on the cryo device. And then immediately plunged into liquid nitrogen. Once theyre frozen theyre placed in a nitrogen tank. Reporter at the parties the allure of freezing eggs is obvious for women worried about their biological clock. But bioethicist Josephine Johnson says the marketing hype around the procedure is troubling. I talk to fits about egg freezing cocktail parties. Theyve been shocked to learn medical interinterventions are being discussed with potential patients while alcohol is being provide sglrd johnson says shes concerned women arent hearing enough about the possible medical risks of taking drugs to stimulate their ovaries which is an essential part of the procedure. I would like to see a lot more clarity about what it means to undergo treatment. Its a medical intervention. You are putting chemicals into your body. There are risks associated with it. Reporter some Big Companies have embraced the idea making progressive moves to support their female employees desire to have kids. Apple and facebook are covering some of the costs of egg freezing. But johnson is worried about the message this sends. If the only things they do are offer subsidy for it but they dont actually support the other option of people having children while theyre still in natural fertility, it sends a strong message about what youre supposed to do. One of the problems with the large uptake of Egg Freezing Technology is i believe it sends a message to women that the problem of trying to reconcile family relationships, career is something that women alone need to take responsibility for and its on their backs, its their bodies thats the problem. Reporter for whitney, making her wedding plans and thinking about her future with chris, she says having frozen her eggs gives her an added sense of security. I think, you know were just taking it step by step. Weve had a lot of changes, coming public with our relationship, then dancing with the stars. So right now were just trying to enjoy each other. And well get there. Reporter for nightline, im linzie janis in new york. Our thanks to linzie. What do you think about the pros and cons of freezing eggs . Go to our Nightline Facebook page and let us know in the comment section. Coming up if you really love burgers, now you can wear your heart on your sleeve. The new mcdonalds fashion line. under loud music this is the place. Their beard salve is made from sustainable tea tree oil and kale. You, my friend, recognize when a trend has reached critical mass. Yes, when others focus on one thing you see whats coming next. You see opportunity. Thats what a type e does. And so it begins. With e trades investing insights center, you can spot trends before they become trendy. E trade. Opportunity is everywhere. Here at friskies, cats are in charge of approving every new recipe. Because its cats who know best what cats like to eat. Up today, new friskies 7. Were trying seven catfavorite flavors all in one dish. Now for the moment of truth. Yep, looks like its time to share what our cats love with your cats. New friskies 7. For cats. 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The singer jesse jay, her performance in london. You will not however be paying dollar prices for the grubthemed gear. These undies, 58 bucks. And these, 47. But mcdonalds still hoping its more committed customers will be saying im loving it if youre loving it brace yourself for the bad news. For now these mcdonalds clothes are only available in sweden. Sorry. That. Thank you for watching abc news. Tonight tune into gma first thing in the morning. As always were online 24 7 at abcnews. Com abcnews. Com. [dramatic music] yo yo [laughs] hey hey hey im terry crews, and i cant wait to start giving some money away today on millionaire. [cheers and applause] for years, todays returning contestant has been envisioning the millionaire confetti raining down on him. Now hes only four questions away from that becoming a reality. From oakland, california please welcome Dorian Johnson [cheers and applause] my man, my man. Uh. Thank you. Dorian, here we are again. Man. Im saying. You visual