Story . An inspiring young man. Why so many kids are clambering to join his club. Nightly news begins right now. Announcer from nbc news World Headquarters in new york, this is nbc nightly news with lester holt. Good evening. Possibly another recent story has generated the level ofnother recent story has generated the level ofher recent story has generated the level ofer recent story has generated the level ofr recent story has generated the level of recent story has generated the level of universal outrage quite like the video of a bloodied man being dragged from his airplane seat. Now there is late word a settlement has been reached between united aligns and that passenger kentucky doctor david dao who was injured after being forcibly being removed to give his seat to a traveling United Airline crew member. The sum was announced on the same day united released an internal report on the april 9th incident and announced a series of changes to prevent it from happening again. In an exclusive interview, uniteds Ceo Oscar Munoz described to me the failures that failed dr. Dao. I dont wish any lower point than this on anyone in the world. Reporter oscar munoz hoping this low point will also be uniteds turning point with what it calls an amicable resolution of an unfortunate incident, the airline settling with dr. David dao as it confronts mistakes and promises change releasing an internal report listing its failures that day, calling Law Enforcement despite the fact there was no Security Threat and booking an offduty flight crew aboard an already sold plane and not offering enough compensation to entice passengers to give up their seats. You needed to get that crew on that airplane to cover another flight. Looking back, was there another way . Could you have hired cars . Were there solutions that would have avoided absolutely. Thats the common sense process that i have failed our company to provide. We should have done that immediately. Embedded in the policies and procedures. Procedures the Airlines Says will change. More training for difficult situations. New teams focused on providing agents with creative solutions. Fewer overbooked flights, and raising compensation for those willing to take a later flight up to 10,000. Could more compensation have avoided this in this case . You know, its hard to say. I think the combination of financial plus how do i get to where i want to go . Thats the thing that something well put the customer at the center of everything we do. Isnt Customer Service putting the customer first, isnt that a given . It is. We make sure half a Million People every single day get to somewhere safely. When you have a complicated process like that, the operational mindset becomes sort of front and center and you forget sometimes the people youre carrying are human and have interest and have desires. Munoz blames the episode on what he calls a system failure, however, as a result, he will no title of chairman next year as planned. His decision, he says. I dont think its the right time, a. And b, i need to provide, as i say, sorry, there has to be actions, proof that i am in deep that was your call . Yes. Since the united incident, a series of Airline PassengerHorror Stories have grabbed the headlines. You looked on tv and saw the American Airlines incident with the stroller and the flight attendant. What did you think . The industry is getting a black eye. And i think what and again, im not defending any issues whatsoever, other than a lot of great things happen in all the Airline Industry across the world. Youve caught us, all of us at a bad moment so i felt sorry. I know them well. I know their views on life. But its forcing a new culture at united munoz is committed to starting with dr. Dao. We breach public trust and a serious profoundly sorry for that. Dr. Daos lawyer tonight applauding the moves and calling the client a champion and the adoption of the changes. In delaware, flags are at half staff for a state trooper gunned down by a suspect that held police in a 20hour standoff. Swat teams used explosives to blow open the suspects house before he finally came out shooting this morning. Tonight, with the state in mourning, investigators still dont have a motive. Here is nbcs tom costello. Reporter in a quiet delaware suburb, a violent night of gunfire and explosives after a standoff with a copkiller. It started less than 24 hours earlier at a Convenience Store when state Trooper Steven ballard approached a suspicious vehicle. Police say thats when the passenger, a 26yearold jumped out, pulled a gun and began shooting. As the trooper was wounded on the ground. Sealy approached and executed him. Cpr in progress. Reporter sealy then fled barricading himself in his familyom overnight swat teams using explosives to blow off the windows and doors trying to coax him out. It was like five shots of succession, like five shots, a break and five more shots. Reporter at 9 17 this morning, sealy came out shooting and was shot and killed himself. Neighbor say sealy and his family kept to themselves. They stuck to themselves, we never saw them outside or anything. Reporter the family, you never saw the family . No. Reporter outside, state police troop two, the flags are at half staff. Black bunting over his patrol car, an eightyear veteran he was married with a stepdaughter. The acts of steven yesterday exemplified the dedication. Reporter today fellow officers and the governor choked back tears. He leaves behind his lovely wife luiz, a daughter and a loving family and scores of friends. Reporter investigators say they dont know why trooper ballard stopped the car but sealy had a record of drugs and weapons arrest. Tonight at the Convenience Store, police tape and flowers for a fallen officer. Tonight trooper ballards car remains parked in front of the barracks there. People have have been coming all day bringing food and flowers, even money for his family. He is the first trooper in delaware to die in the line of duty since 2004. Nationwide, this year, the 13th officer shot and killed in the line of duty. Lester . Tom costello in delaware tonight, thank you. Back in the headlines, President Trumps former National Security advisor Michael Flynn, the pentagons top watchdog launched an investigation into flynn who was the subject of fbi and congressional probes into his ties to russia. Flynn was fired 23 days into the job for misleading Vice President mike pence about his conversations with russias ambassador. Nbcs Andrea Mitchell has new details. Reporter tonight the firestorm growing over ousted National Security advisor Michael Flynn now being investigated by the pentagons Inspector General for accepting prior payments without prior approval. Unleashing the sharpest words yet at the white house for refusing to turnover all documents on flynn to them. I honestly did not understand why the white house is covering up for Michael Flynn. I dont get it. After the president fired him. Reporter so the democrats released pentagon documents showing the Defense Intelligence agency warned flynn when he retired. He needed permission to take money from foreign governments. At issue, flynn receiving 45,000 for his speech plus expenses with putin in russia in 2015 and 500,000 lobbying for turkey in 2016. We have no evidence, zilch he obtained permission from the secretary of the army and secretary of state to accept any foreign of the payments. Reporter the white house saying the [000 08 59;00] is wrongdoing, the departments Inspector General should look into that. Reporter nbc news learned from sources close to the investigation, trump transitioned and the white house did its own background check on flynn and hired him anyway. Working on behalf of foreign governments, getting paid may not be unlawful but if you dont disclose it, investigators want to know why are you hiding this information . Perhaps youve been compromised. Reporter republican oversight chairman Jason Chaffetz asking the army to weigh in on whether flynn broke the law. Flynns lawyer saying flynn notified the pentagon but never told them he was being paid. Lester . Andrea mitchell, thanks. Turning overseas, a tragic day for American Forces fighting isis. Two u. S. Special operations troops were killed in a battle against isis fighters in the same area where the u. S. Dropped a massive bomb earlier this month. Nbc News Pentagon correspondent hans nickles has details. Reporter u. S. Special Operations Forces joined by the afghan army attacking isis insurgents, killing around 40. But in the battle, two u. S. Special operators were wounded. Medivaced out alive but later died. A third was grazed by a bullet staying on the battle field. All happening on the same isis stronghold in eastern afghanistan where the u. S. Dropped a 21,000pound explosive two weeks ago collapsing terrorist tunnels and caves. Afghan Officials Say roughly 100 isis combatives were killed by the bomb but defense secretary jim mattias claiming not to care about numbers. Frankly, digging into tunnels to count dead bodies is probably not a good use of our troops time. Reporter tonight, more than 20 extremist organizations in the region according to u. S. Officials including isis and the taliban. I dont see how afghanistan doesnt devolve further into endless civil war. Reporter the Top Commander in afghanistan wants to add a few thousand more troops to the already 8400 in country. But neither secretary mattias nor President Trump has publicly indicated if they agree. Lester . Hanz in this canickels at the pentagon, thanks. There are a flood of new questions tonight about President Trumps new tax plan to be specific, whats in it and how will it effected millions of american families. The Trump Administration provided an outline but not many details so far. Nbcs Peter Alexander has more on that. Reporter the president s plan to overhaul 70,000 pages of federal tax laws so far boiling down to barely 200 words. Critics say its a p. R. Pitch, not a proposal. It is a plan to lower President Trumps taxes. The taxes of his cabinet. And people as wealthy as they are. Reporter the biggest winner according to most tax analyst, the rich, their tax rate dropping nearly 5 and the white house pushing to abolish the ta the death tax and slash the Capital Gains tax on investments all benefitting the wealthy. Low income americans could pay no tax at least for their first 24,000 of income with the doubling of the standard deduction for couples but today treasury secretary steve ma is telling more. Steve is telling more. I cant make any guarantees but i can tell you thats the number one objective. Reporter and defecting questions how the blueprint would balloon the deficit. President trump hasnt given details how his three tax brackets, 10, 25 and 35 would apply to different income levels. He said tax benefits for saving in 401 k plans would be untouched and he would eliminate all detections except charitable contributions and mortgage interest but if youre renting like 35 of u. S. Households, that tax break doesnt save [000 12 59;00] favor of this proposal is that it will spur consumer and business activity. It will cause people to spend more money. It will cause businesses to employ more people but the reality is that doesnt seem to be plausible. Reporter tonight the president also says on trade announcing that hell renegotiate n. A. F. T. A. President trump incystiincys incyst insisting he was just days away from withdrawing all together before receiving calls from mexico and canada who urged him not to tear it up. Lester . All right. Peter alexander at the white house tonight, thank you. To berkeley, california where new protests are breaking out tonight a day after conservative pundit ann coulters plan to speak at u. C. Burkely was abruptly cancelled. It feared another round of violent protest with coulter saying she may go anyway. Miguel almaguer is there. Reporter today in berkeley, protests spilling into the streets but tonight, many fear violence will erupt. Right squaring off in bloody demonstrations in recent weeks, the kind of confrontation u. C. Berkeley was hoping to avoid, cancelling the speech scheduled for today by conservative fire brand ann coulter. It shows violence works. Reporter with coulter speaking in modesto tomorrow, the university is worried the campus will be turned into a the battle field. In february, there were fires and fights after my low yun nap laos had his speech cancelled. There is one to the First Amendment and the safety of students. Reporter many of the protesters arent students. Both sides critical, coulter was silenced. Im tired of people showing up and stifle free speech. Reporter police have been told some of the extremists even hammers. Arrests have already been made. Tonight on the streets of berkeley, unrest over the silence of free speech. The question now, at what cost. Miguel almaguer, nbc news, berkeley. There is more to tell you about tonight, still ahead the controversial netflix show that has schools sending warnings to parents. Why some accuse it of glamorizing teen suicide. Well be right back. Thats why theres trintellix, a Prescription Medication for depression. Trintellix may help you take a step forward in improving your depression. Tell your healthcare professional right away if your depression worsens, or you have unusual changes in mood, behavior or thoughts of suicide. Antidepressants can increase these in children, teens and young adults. Do not take with maois. Tell your healthcare professional about your medications, including migraine, psychiatric and depression medications, to avoid a potentially lifethreatening condition. Increased risk of bleeding or bruising may occur, said pain relievers, aspirin or blood thinners. Manic episodes or vision problems may occur in some people. May cause low sodium levels. 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Reporter 13 reasons why the controversial new Netflix Series chronicles 13 reasons from body shaming to sexual assault, a fictional teenage girl decides to. K. I. L. L. He. R. Se. L. F. Everybody is talking about it is crazy. Schools across the country sounding the alarm with letters home to parents warning the notion of suicide is glamorized and may be be difficult. Difficult for the teenage mind to watch and process the appropriate way. Its hitting way too close to home. Reporter alexa curtis worries. Is that young adults are going to watch the show and immediately think that its the easy way out but the kids arent realizing they are going to be gone. Their life is over. Why didnt you say this to me when i was alive. Reporter suicide is the second leading cause of death for teenagers in america. Over 5,000 kids attempt it every day, precisely why the series creator brian yorkie thinks we must tackle the subject honestly. We felt things like sex and suicide should be difficult to watch. Its not easy for the people that go through them. Reporter tonight experts say the take away for parents, be aware. Takeaway for parents, be aware. Talk to your kids about this. If they are watching it, see if they have any questions, offer to watch it with them. Reporter a show aiming to start a conversation about teen suicide seems to have done just that. Blake mccoy. Nbc news, chicago. Up next here tonight, the airline ending something [000 19 58;00] with. Ssengers are lights. Camera strike a pose ssengers are your eyes work as hard as you do. But do they need help making more of their own tears . If you have chronic dry eye caused by reduced tear production due to inflammation, restasis multidose™ can help. With continued use twice a day, every day, one drop at a time. Restasis multidose™ helps increase your eyes natural ability to produce tears, which may be reduced by inflammation due to chronic dry eye. 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Ask your doctor about eliquis. Yet another airline is taking heat for kicking a passenger off a plane. This time delta. This confrontation caught on camera has they removed a man who was booted for taking a trip to the bathroom as he was warned not to as the plane was on the tarmac for 30 minutes awaiting take off. All passengers were forced to get off the plane and reboard and the passengers compile with crew instructions especially during take off and landing. Takeoff and la. And one more note from up in the air weeks after the United Airlines incident, Southwest Airlines said today it plans to stop over booking flights all together. Southwest says its been looking at ending over booking for some time. Jetblue already bans the practice. Why in the world would you take a piano and throw it off the roof . And looks like a whole lot of fun. It dates back to t 1970s. After a gap year in 2016, the roof drop is back and from the looks of it, the whole thing is a smashing success. Up next, the 11yearold thats gone from reader to leader and why so many other kids want to join his club. E postmenopausal osteoporosis and a high risk for fracture. I can tell you prolia® is proven to help protect bones from fracture. But the real proof . My doctor said prolia® helped my bones get stronger. Are your bones getting stronger do not take prolia® if you have low blood calcium, are pregnant, are allergic to it, or take xgeva®. Serious allergic reactions, such as low blood pressure; trouble breathing; throat tightness; face, lip, or tongue swelling; rash, itching or hives have happened in people taking prolia®. Tell your doctor about dental problems, as severe jaw bone problems may happen, or new or unusual pain in your hip, groin or thigh, as unusual thigh bone fractures have occurred. Prolia® can cause serious side effects, including low blood calcium, serious infections. Which could skin problems; and severe bone, joint or muscle pain. 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Thank you. Gravity, is a fickle mistress. Whats in your wallet . Finally tonight, a finally tonight, a story about the love of reading. A fifth grade boy with a passion for books noticed something missing from the page, characters who look like him so he formed his own book club and others couldnt wait to join. Nbcs rehema ellis explains. Reporter when 11yearold sydney keys and his mother winnie walked into the bookstore outside of st. Louis, simple curiosity turned into sheer joy. Yeah. It just makes me feel better about myself. Reporter that the because sydney never seen a bookstore devoted to African American literature written by African Americans. I couldnt get my hands off of this book i was laying down reading on the carpet in the bookstore. Reporter the book was danny dollar millionaire [000 27 59;00] book club for boys, whats the reaction . I know all my friends want to be in it so they are trying to sign up online. Reporter he calls it books and bros and mom couldnt be prouder. Before sydney started school he had a speech impediment, he stuttered a lot. Reporter but now. Hello, everyone. My name is is sydney keys and im the founder of books and bros. Reporter he leads the Club Meetings once a month at neighborhood mall. We. We. Are brothers. Are brothers. Who love. Who love. To read. To read. Reporter the boys pay 20 for their books, goody bags and a study guide from his mom. Have any girls come and asked about hey, sydney, what about the girls . I mean, they could always make a book club, as well. Reporter this club is a chance for boys to lose themselves in books as they find themselves, too. Rehema ellis, nbc news, university city, missouri. Im lester holt, for all of us at nbc news, thank you for watching and good night. [doorbell] when you have doctors working as a team for your health, you get the care you need to help you thrive. Kaiser permanente. Thrive. Lights, camera, access. After this is out there she did it. I was burnt by ellen