This is the cbs evening news with norah odonnell. Brennan good evening. Norah is off tonight. Im margaret brennan. And this is our western edition. We begin with breaking news. New york citys chief medical examiner says an autopsy on Jeffrey Epstein shows the financier hanged himself in his jail cell. The findings, released late today, appeared to shoot down theories that he may have been strangled. Epsteins powerful friends once included bill clinton and donald trump. Epstein died last weekend, 10 months before he was scheduled to be tried on federal sex trafficking charges involving underaged girls. Don dahler has more on what the autopsy revealed. R reporter Jeffrey Epstein used a bed sheet attached to the he nk me whicalsos,ccording to heid the autopsy said he hung himself with enough force to break several bones in his neck. That disputes conspiracy theories that the disgraced financier was murdered to protect powerful friends and enemies about whom he may have had incriminating information. Epstein was found unresponsive u his new york jail cell 6 30 a. M. August 10, where he was being held pending a new trial hn federal charges of sex trafficking. Prosecutors say he sexually ed ged girls as young as 14. Although guards were supposed to look in on him every 30 minutes, nuo have been suspended for allegedly leaving him unattended that day for three hours. N zens of women over the years have claimed epstein forced them to have sex with him and or his friends. Michelle licata says she is one of the victims. O once Something Like this happens, it lives on with you forever. Reporter since epstein died six days ago, several alleged victims have filed civil suits against his estate. Were still waiting for more foformation on his will, but some estimates put the value of what he left behind in the hundreds of millions of dollars. Margaret. Brennan don dahler. Thank you. We are following breaking news affecting major airports tonight. U. S. Customs computers went down across north america. Tonight systems are slowly coming back. Airports in new york, los angeles, and toronto, canada, are seeing long delays as passengers are processed manually. No word on what caused the outage. Tonight, new York City Police are searching for the person who abandoned three rice cookers during the morning rush. A major subway station was evacuated, and a busy intersection was closed off. Those devices brought back ckmories of the Boston Marathon bombing. Police say there were no otplosives inside and released a photo of a man they want to ewterview. Were learning new details about Dale Earnhardt jr. s fiery plane naash in tennessee. The cessna jet burst into flames after landing yesterday. Darnhardt, his wife, and their baby daughter escaped, as did the two pilots. Omar villafranca has the latest on the investigation. sirens reporter n. T. S. B. Investigators are looking at Surveillance Video of the plane o it landed to figure out what went wrong. The runway is about 4,500. Eet long. The airplane was capable of landing at this runway. We dont see any indications that the initial touchdown was too long. Reporter but it was a hard landing. The plane bounced twice, causing the right main landing gear to hllapse. It then hit a chain link fence and came to a rest near a busy highway. You can see theres a piece of that chain link fence wrapped eround the body of the plane. Had that chain link fence been a few feet that way, it may have blocked the door where the earnhardts got out. Investigators say that weather was not an issue, and the pilots didnt report any problems before landing. John goglia, a former n. T. S. B. Board member, believes pilot error is unlikely. When a landing gear fails and leaves the aircraft, it normally severs all those hydraulic lines. The braking power is grossly diminished as soon as the landing gear failed. Reporter the wreckage will ou here on the street for about yso to three days while the n. T. S. B. Continues their investigation. They will then take the voice data recorder and send that to washington, d. C. , for analysis. Margaret. Brennan thanks, omar. Wall street closed a wild week y,th a rally. Today, the dow gained more than e00 points, but for the week it lost 1. 5 . That may signal some worries ahead for President Trump. Aula reid tells us he is betting on a Strong Economy to. In a second term. Reporter despite a roller coaster week for the dow and some worrisome economic indicators, President Trump continues to insist all is well goihe economic front. I think were going to have a very long period of wealth and success. Reporter but the president s trade war with china and sagging eronomies in europe and south america have rattled the markets and stoked fears of a recession, tmajor warning sign for the president who sees a Strong Economy as key to his re election. You have no choice but to vote for me because your 401 k s, down the tubes, everythings going to be down the tubes. Reporter according to the president , both the media and the Federal Reserve are working t ainst him and holding back the economy. In recent days, the president o. S phoned wall street c. E. O. S to discuss the markets. Many in the Business Community are worried. Twothirds of the c. F. O. S surveyed by Duke University expect a recession by the end of next year. Ar markets and businesses are starting to think that the president may not really have an end game here. Reporter michael strain is an economist at the conservative think tank a. E. I. The president has been insistent that china is bearing the economic burden of the ofiffs when, of course, theres lots of Good Research that shows that u. S. Consumers are facing higher prices for certain products. Reporter President Trump continues to defy conventional wisdom, but historically, stesidents seeking reelection have won when they had a Strong Economy and lost with a weak we. Margaret. Brennan paula reid traveling oith the president to his Vacation Home in new jersey. Well talk more about this on face the nation. My guest this sunday include adete house trade adviser peter navarro. Ids news has confirmed that the president has been asking about a big real estate deal. How about the u. S. Buying greenland . All of it. The worlds biggest island, 80 of it covered in ice. Our seth doane reports tonight from greenland. Os reporter to the prospect of telling this stunning, resource rich island to the u. S. , denmarks government said today, in essence, thanks, but no utanks. Denise and David Holland with n. Y. U. , were surprised by the idea. This is news to us. Reporter what would you make s. That suggestion of the u. S. Trying to buy greenland . I think you should talk to denmark. They could not be happy. Reporter shes right. Maybe we should buy california this member of Denmarks Parliament joked today. Sources tell cbs news president erump is interested in greenlands strategic and military significance. The u. S. Already has an airbase in northern greenland. And in this tiny coastal hamlet of kulusuk, population 250, we found residents not exactly enthusiastic about the u. S. Taking more ground. Trump is maybe a little crazy. Reporter you thought the president was crazy . Or yeah, i think so. Reporter this would not be the first time the u. S. Has tried to buy this place. Mck in 1867, the state department made an inquiry, and then again after world war ii, ioesident harry truman offered 100 million to buy greenland. Both attempts failed. Seth doane, cbs news, kulusuk, greenland. Brennan thanks to seth doane. Ull, the state Department Said orday the u. S. Envoy for north korea is heading to asia next week. David martin at the pentagon reports that there is new urgency in the mission following wyongyangs firing of two more Ballistic Missiles. Reporter rarely has north korea tested missiles at this eace. Six shortrange Ballistic Missiles launched in three weeks. Ras. Intelligence Officials Say these are new missiles which are solid fueled and mobile and can launch with little or no warning and fly at a trajectory that hakes them harder to intercept. Despite their short range, they can threaten american troops based in south korea, but President Trump insists hes not worried. I have no problem. Well see what happens. But these are shortrange missiles. Theyre very standard. Reporter according to north korean accounts kim jongun ordered the tests in reaction to en ongoing u. S. South korea exercise, even though it is largely a computer wargame. explosion . Without any of the live fire pyrotechnics of previous years. Former intelligence analyst, now cbs news consultant, robert carlin, thinks the exercise is just a convenient excuse. They have to test these new systems. Emeyve been working on them for some time now. They were ready to roll them out, and this was their opportunity. Reporter last week, aesident trump tweeted he received a letter from kim epologizing for the tests and saying he would like to restart Nuclear Negotiations as soon as the u. S. South korean exercise is over. Te exercise is scheduled to end sxt week, so theres still time tr the north to get some more tests in. After that the real test will be whether kim stops launching and starts negotiating. Margaret. Brennan david martin. Thank you. Well, portland, oregon, is bracing for what could be a tense saturday of dueling protests. Groups of rightwing extremists and antifascist demonstrators are expected to face off in that city. Jonathan vigliotti shows us whats being done to keep the peace. Reporter the serenity of Downtown Portland is about to get tested yet again. Inores are already closing on the eve that Something Like this. gunshots . Will happen once more. Tomorrow, several groups from the far left and far right say they will converge on downtown. The Portland Police bureau says its nearly1,000member force will all be on duty. Us we recognize these events can cause alarm, anxiety, and even fear for certain members of our community. No, no reporter a riot in 2017 shattered store windows throughout downtown. 25 people were arrested. M its sad to me because i think a lot of people that come here to protest dont actually luve here or share a lot of the values that i believe portland stands for. Reporter as has happened in the past, police arent even sure what groups will show up, what theyll be protesting about, and if they only are coming to make trouble. W we have seen a shift in the last few weeks in the rhetoric, and a separation of those who want to engage in free speech and those who intend to participate in acts of violence. Reporter and this is the park where that protest will start. Ive been speaking with Business Owners all day, many saying they hope to stay open. And, margaret, were learning tonight more than a dozen law wnforcement agencies, including ghe f. B. I. , will be here on scene out of an abundance of caution. Brennan jonathan, well be tracking those. Thank you. Cbxt up on the cbs evening news, a woman who lost her father in a supermarket shooting takes on the gun policy of the nations largest grocery chain. Later, Steve Hartman with a lesson on true love. Love. 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In states that allow open carry, some businesses, like chipotle, target, and starbucks, ask customers not to bring their guns into stores. Others, including kroger and mcdonalds, do allow weapons inside. Tonight, Jericka Duncan has the otory of a woman who is challenging krogers gun policy. Reporter you received a phone call. I did. Reporter who was on the other end . My son. Ra reporter what did he say . That his grandfather was shot. Reporter Kellie Watson lost her father, 69yearold maurice stallard, to gun violence last totober. While shopping for School Supplies with her then12year old son, stallard was shot and killed inside this kroger socery store in louisville, kentucky. To have been taken from us in the way that he was taken because of someone elses hate is its unbelievable at times. Reporter Police Arrested gregory alan bush. J was indicted by a federal rrand jury for hate crimes. Watson, along with her mother, charlotte stallard, recently filed a lawsuit against kroger. It describes more than two dozen gunrelated incidents, resulting in eight deaths, inside and outside of Kroger Stores nationwide. Ou you dont need a gun to buy groceries. Po reporter ron johnson is the stallard familys attorney. You cant carry a gun into your school. You cant carry a gun into the courthouse. Thy . Because they know its dangerous if people bring guns into those esaces. And what were simply saying is Grocery Stores need to do the same thing. Reporter right now, kroger does not have a policy prohibiting customers from bringing firearms into their stores. The Company Released a statement on its website stating their longstanding policy on the issue is to follow state and ngcal gun laws and asking customers to be respectful of others while shopping. Watson says she hopes her lawsuit will help make public waces safer. We have to do something to try to prevent these things from happening again to others. 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