And the superhero blockbuster making history tonight. The Creative Force and the stars share the powerful messages of black panther. This is nbc nightly news with lester holt. Good evening, everyone, from pyeongchang there is lots to report from here coming up. But there is breaking news in oregon tonight. A climbing accident and a risky High Altitude rescue mission under way right now for more than a dozen stranded climbers near the peak of oregons 11,000 foot high mt. Hood. A military chopper airlifting a critically injured victim to safety, as others desperately await rescue. Nbcs blake mccoy now with late details. Reporter high atop oregons mt. Hood, a rush to rescue seven hikers after one fell more than 700 feet, unable to stop his fall. The rest hurried to his aid. Wyatt peck started climbing with the group, but turned back. The slopes were extremely steep and icy. And you couldnt if you were to slip and fall, you couldnt dig your ax in and stop yourself. Youre just going to keep sliding. Reporter a black hawk helicopter scrambled by the Oregon National guard for a complex rescue mission more than 10,000 feet up oregons highest point. A part of the mountain known as the hogs back, popular with climbers. The hogs back, it doesnt look steep, but its very, very steep. Reporter warm weather means avalanche conditions, Falling Rocks and ice adding to the danger. By midday two more groups stranded. The weather is supposed to turn south here. Rain, snow, winds. Were trying to do everything we can to get everyone down safely before that weather hits us. Reporter located 50 miles outside of portland, mt. Hood, a potentially active volcano, is one of the nations top climbing destinations where tonight the rush is on to save as many as 15 stranded climbers before nightfall. Blake mccoy, nbc news. Sadly, the alarm today in washington. The nations top intelligence officials who say russia will try to disrupt the 2018 midterm elections. Those officials appearing before congress outlining the top threats facing america, including protecting your vote. And also tonight, new warnings over whats in your social media feed. We get more from nbcs andrea mitchell. Reporter six months from the midterms, russia is again trying to disrupt our elections. Todays stark warning from the nations intelligence chiefs. Frankly, the United States is under attack. Under attack by entities that are using cyber to penetrate virtually every major action that takes place in the United States. Reporter the russian attack plan using bots, fake accounts on facebook, and other social networks, planting disinformation to sow discord, what they did in 2016. There. Is a wide consensus among the Intelligence Community that russia interfered with the election of the president of the United States. Thats exactly the point. Reporter and today when pressed, officials acknowledge that the president has never asked them to stop russia from doing it again. Has the president directed to you and your agency to take specific actions to confront and blunt russian influence activities that are ongoing . Were taking a lot of specific efforts to blunt directed by the president . Not as specifically directed by the president. Reporter in fact, mr. Trump has often echoed Vladimir Putins denials. I believe that president putin really feels, and he feels strongly that he did not meddle in our election. Reporter tonight facebook tells nbc news it is working closely with the fbi and Homeland Security to protect the midterms. But experts say americans need to be even more alert online. That for a lot of people means that they cant trust any of the information theyre receiving about the events of the day. And i think that that means a lot of people are frankly very confused. Reporter and tonight another warning about north korea. The intelligence chiefs also telling congress that kim jongun is planning more missile tests this year and another nuclear test, despite his sisters smiles at the olympics. Lester . All right, andrea mitchell, thank you. Lets turn now to the turmoil inside the white house over what officials knew and when about Domestic Violence allegations against a former top aide. In an extraordinary moment, the fbi director under oath before Congress Today threw a wrench in what the white house says happened. We get the latest from nbc White House Correspondent kristen welker. Reporter tonight the white house on defense amid questions about whether top officials here were trying to protect staff secretary rob porter, whose security clearance was held up amid allegations of spousal abuse and concerns about potential blackmail, all after fbi director Christopher Wray contradicted the administrations account of porters ouster today. The fbi submitted a partial report on the investigation in question in march, and then a completed Background Investigation in late july. Well administratively closed the file in january. Reporter for days, the white house has insisted the investigation into porter was still in progress and not completed. His Background Investigation was ongoing. It was ongoing, hadnt been completed. Reporter but today press secretary Sarah Sanders parsing her words, insisting those past statements werent a reference to the fbis investigation, but rather one that was ongoing within a Different Office here at the white house. Christopher wray said it was closed in january. So whose telling the truth here . Both. As i said, the fbi portion was closed. The White House Personnel Security Office who is the one that makes a recommendation for adjudication were not made a recommendation to the white house. Reporter but sanders couldnt answer the most critical question, whether the White House Personnel Security Office alerted top officials, including chief of staff john kelly about porters past. Im not aware of any communication. I cant say definitively. But im not aware of any communication. Reporter since the story broke, the white house has been struggling to explain its story and timeline. Its obvious that the nations top secrets were being handled by someone who they knew would never receive a security clearance. Reporter despite the mixed messaging, john kelly told tth wall street journal today it was all done right. The president has yet to condemn in the wake ignoring two shouted questions about victims today. Lester . Kristen welker at the white house. Thank you, kristen. A scare in the nations capitol when a suspicious powdery substance was sent to the building that houses the office of former president barack obama. The secret service says police secured the area and determined the substance was harmless. This come just a day after another powder scare at a new york the apartment belonging to president trumps daughterinlaw. She was taken to the hospital as a precaution but was unharmed. Here in pyeongchang, it was another day of high winds, and skiers just cant seem to catch a break. Weather has forced a delay in Mikaela Shiffrins first event tonight in slalom. She won gold in that event in sochi. But there was a scary scene in luge as american Emily Sweeney lost control on a challenging curve of the track. She was thrown from her sled but appeared to be okay as she walked to an ambulance. The crowd cheered her on in support. In the medal count, team usa is in sixth place with six medals, half of them gold. And one of those gold medals went to snowboarding superstar chloe kim, despite her jawdropping highflying performance in halfpipe, she is a surprisingly typical and grounded 17yearold, having the time of her life. And despite big things ahead of her, still focused on the little things. I love what you tweeted today. You said i hate crying, but ill give myself a pass for this one. Thank you, everyone, for the love. Stoked to bring home the gold have you had that moment yesterday . What moment . The moment to cry. Oh. No well, i guess i cried little bit at the flower ceremony. It hasnt really sunk in yet. And i still feel like i need to go bath back out there and compete again. But your third run you already had the gold. Tell me, what was the freedom of coming down knowing you had it . Backtoback 1080s. I knew i wasnt going to be satisfied if i just took home the gold with a run i know i could have improved on. I just love the energy. And it was the time and place to just put down the best run ever. Im so happy my family, my whole family was there to watch it. What chloe was not watching were her competitors. I want to be the best i can. I did just that today. So im really stoked. And im really proud of myself. How does your life change now Going Forward . I dont know. I think youve never been a Gold Medalist . No, never. You know, just my first olympics. I didnt come here with High Expectations at all. I just wanted to have fun and take in the whole experience. Life is probably going to be a little crazy, but im sure it will settle down a bit and ill be a normal teenager again. You can learn a lot about a girl by her tweets. And a lot of chloes are about food at the darnedest times. It says wish i had finish mid breakfast sandwich. But my stubborn self decided not to, and now im getting hangry. Just to be clear, did you tweet them a that while you were getting ready for your run . Between the second and third round . Yes. If my stomach is rumbling, clearly im going to be a little concerned. Clearly it didnt affect the performance. Oh, i dont know, cotton candy, something. I kind of have a sweet tooth. I was anything a Bigger Picture of how you would treat yourself. But if food is what you want, food is what we have. Oh the world may be chloes oyster, but for now ice cream and a gold medal will do just fine. In the spirit of the sport, let me say how stoked i was to spend some time with chloe. Not a word youll often hear me say on this broadcast. Turning back home now to the flu emergency that weve been covering. More and more patients are turning to antiviral medications like tamiflu to stop the symptoms. But some are balking at the cost with potentially deadly consequences. Nbcs Gabe Gutierrez explains how to save on these medicines that could save your life. Reporter Heather Hollands husband says she turned down the generic version of tamiflu her doctor prescribed at first, because it cost too much, 116. When her symptoms got worse, he bought it for her anyway, but it was too lay. Days later the School Teacher and mother of two from texas died. She is gone. It was so rapid. Reporter over a decade, the price of brand name tamiflu more than doubled from about 80 for a tenpack to almost 172. Thats not abnormal. You see many medications like really spike in price as theyre ending their patent exclusivity. Reporter the cdc says most children and adults with weather the flu without medication. But recommends it for high risk groups like elder people and pregnant women. If people havent taken tamiflu within the first 72 hours, dont bother. Its a waste of money. It will not make your illness better. Reporter how can you get the best price . Request generic tamiflu which usually costs about 100. With insurance you may only pay 20. Look for discount or sales on health warehouse. Com. And talk to your pharmacist or doctor about other potential savings. Generally, your insurance will cover it. So it will be a copay. But the copay is definitely worth it to have a few days less illness. Reporter while there is a shortage at some pharmacies, the cdc says there is enough to go around during the worst flu season in nearly a decade. Gabe gutierrez, nbc news, atlanta. Much more still ahead here from pyeongchang, including tonights star of the show, snowboarder shaun white on a quest for gold and redemption at the winter olympics. Also, the wait is almost over. Black panther is about to roar black panther is about to roar into mvo youre not doing work to help somebody, black panther is about to roar into youre gaining something from meeting mr. Adderley. Its a calling to not only everybody in this neighborhood in miami, but to the nation how great we are. And how great we can be. Ill stand by you. Ill stand by you. 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Back in pyeongchang, just hours from now, the man hit the halfpipe with american snowboard sensation shaun white looking to regain the medal stand that eluded him in sochi. And if yesterdays qualifying runs were any indication, he is in an excellent position to do it. I caught up with white in a much warmer california a while back where he talked about his new mindset and focus approaching these olympics. Reporter shaun whites gravitydefying performances on the halfpipe and there it is reporter injected new energy and new attitude into the modern olympics. 12 years after he rose to new heights in torino, the snowboarding prodigy once known as the flying tomato is a little more grounded. As you get older, sometimes you become more conscious of your mortality and things like being hurt. Yeah, yeah. You do a very dangerous sport. Do you look at it differently now with maturity . Id be lying to say i dont, you know what i mean . Honestly there are certain days where im not today. You look at the halfpipe, its icy, its windy. I remember being younger and just going for it. Reporter i caught up with white at home in malibu. So are you in the market for a new nickname . Flying tomato is so passe, right . I thought the hair would go and that name would go. But its kind of lingered around. Reporter but now 31, he is humble and reflective. You had the bad boy image for a while. Do you own it . Ill take it. I was just, you know i dont want to say i was a bad boy, but i was i did some wait. You ask the question. Im waiting for the answer. Catching me. No, i always felt like i always felt like i danced on the line of things. Reporter he is also still processing the unfamiliar taste of failure. I feel like im in such a better place in person in general because of what happened at sochi. Shaun starting his run off huge. Reporter what happened in sochi was an upset. Oh my goodness reporter the twotime Gold Medalist finished fourth. What was the immediate feeling of walking away from sochi . The immediate feeling was more of a wow, this is what that feels like. Ive never been to an olympics and, you know, not won. So when people go back, well, when did you get over sochi . Get over it . Like you dont. Ill never get over it. And now youre using it . Yeah. It will be that little scar of when you were a kid and you fell off your bike. You remember to not fall off your bike again, you know what i mean . You learn from it. Reporter from defeat came a new outlook. I do some things there differently now, obviously more physical training in the gym and stuff like that. But the things i changed were more mental. Reporter training for pyeongchang hasnt been easy. He suffered a wipeout last fall, earning a face full of stitches. But injuries have never held shaun white back, and he is determined to set the bar high in south korea. One thing ive always had is knowing my competitors and knowing myself. Id always look at the course and see whats the feature that is giving everybody the hardest time because thats where im going to do my best trick. We saw a little bit that of in the qualifying rounds yesterday. You can see shaun white compete live during tonights primetime coverage on nbc. Still a lot more ahead here on nightly news. Coming up, a terrifying midair scare for passengers aboard a flight today. And why babies born in one certain month appear to be its a lot easier to make decisions when you know what comes next. If you move your old 401 k to a fidelity ira, we make sure youre in the loop at every step from the moment you decide to move your money to the instant your new retirement account is funded. Oh and at fidelity, youll see how all your investments are working together. Because when you know where you stand, things are just clearer. Just remember what i said about a little bit o soul things are just clearer. 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Take a look at these images from a passenger on board. It appears part of the engine casing or cowling came off in the final 30 minutes of the flight. Despite what it looks like, aviation experts say its unlikely that passengers or crew were in any danger, and the plane did make a successful Emergency Landing in honolulu. And a recent study claims if you were born in september, you might be more successful. Researchers say its because september babies often have to wait a year before they start school, giving them a boost over younger classmates in cognitive development. When we come back, the stars of marvels new blockbuster that generations of superhero fans have been waiting for. Nbc nightly news is brought to you by pacific life. Protecting generations of some moments can change everything. You cant always predict them, but you can game plan for them. 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Reporter its been called masterpiece, a worldwide phenomenon, and for some, it feels like resistance. My son, it is your time. Reporter the Creative Team gratified by the response. I knew that, you know, this could be something that i would be proud of. But you never know if everybody else will feel that same way. Reporter Academy Award winner Lupita Nyongo is the leading lady. What do you hope or think that this movie can offer children . When you have images like this, black panther, you see people assuming positions of power that look like you, it becomes that much more possible. Reporter kids celebrating free tickets. At the harlem boys and girls club, an Online Ticket fundraiser went viral. Do you think we need more movies like this in the future . If we have more of those that will inspire more people. Its very cool to watch something that inspires everybody. Kids can absolutely walk away from this and feel like royalty, feel like warriors, feel like kings and queens. Reporter a fantasy rooted in reality, now leaping from the big screen. Rehema ellis, nbc news, new york. A reminder that full coverage of the olympics starts right here at 8 00 eastern. Shaun white competes for gold in the halfpipe finals tonight that is nightly news for this tuesday night. Im lester holt. And for all of us at nbc news, thank you for watching and have a good night. I think i was just excited to go down and eat some food. 900, chloe kim. Ice cream. Yep. Egg sandwich. After eating up the half pipe, let the feast begin for chloe kim. Chloe kim, everybody okay. This girls on fire, but is there room for romance in her life . Maybe, maybe. Its me, i cant believe it. Guys, she watched us watch her. Learned even more about maria. My tattoo. Remember this from yesterday . Oh, yeah. What do you say we take it to the next level . Ready . Lights, camera, access. Right now on access, shes just a regular 17yearold. But with a gold medal hanging around her neck. Natalie joins us from pyeongchang with what you dont know about chloe kim. Hey, nat. Hi, kit and scott. Chloe started off her day like any other 17yearold, eating a good breakfast, so not as much as she would have liked, but how she finished her day was nothing short of extraordinary. Throwing down some massive tricks on the half pipe and winning her first gold medal here in south korea, which is even more special because of her deep roots here. How emotional were you on the podium