tonight, breaking news. the country'sntelligence chief is stepping down. dan coats, the director of national intelligence, who has often clashed with president trump on major policy issues involving russia, iran, and north korea. the president now nominating a republican congressman and trump loyalist to replace him. the american teens held in the killing of an italian police officer. court documents say they blamed each other for the murder. a disturbing image. why was one of them bound and blindfolded. the army and air force now involved in rugged terrain where even polar bears roam. hey, ri, who else may be

listening in whe we ask for help? what a whistleblower claims. and a giant challenge. >> why come all the way up here . >> announcer: this is "nbc nightly news" with kate snow. >> good evening. we begin tonight with a at the highest level of america's national security network. dan cos, the director of national intelligence, charged with overseeing theco untry's intelligence agencies, isep stng down in less than three weeks. during his tenur his assessments often contradicted those of the president. late today the president named his successor. hans nichols is at the white house. >> it is believed coats will leave august 15 marking the end of a tumultuous relationship between him and the president he served. dan coats oversees 17 different

agenci t but hisure was often at odds with president trump over issues involving north korea and russia. >> the white house announced on twitter that vladimir putin is coming to the white house in the fall. >> say thatagain. [ laughter ] >> vladimir putin -- >> did i hear you -- >> yeah, yeah. >> okay. >> yeah. >> that's going to be special. >> reporter: coats publicly contradicted the president on kim jong-un's willingness to give up their nuclear weapons. >> north korea will seek to retain its wmd capabilities and is unlikely to completely give up nuclear weapons and production capabilities. >> reporter: the president announcing congressman john ratcliffe who impressed him during theueller hearing last week to replace coats. >> donald trump is not above the

law but he shouldn't be below the law. >> reporter: the president is fomenting politics on twitter, doubling down on attacks againse a baltimo congressman calling ings.acist elijah cu cummings getting support from his hometown newspaper writing this is a president who will debase himse at the slightest provocation. while the white house acting chief of staff tried to explain the president's attacks were not racist. >> it has zero to doh wce. >> mwhat kin of intelligence experience does congressman ratcliffe has? >> he's a former united states attorney andmall town lawymayor. the senate has a reputation for asking tough questions. kate >>ans nichols at the white house. now disturbing new details about two american teenagers being held in thef killing o an

italian police officer. one of them blindfolded while in custody. sarah harmon has the latest. >> reporter: a disturbing twist after two american betweens were arrested in the killi a of italian police officer. officials investigating the newly surhoced p showing one of the suspects, 18-year-old gabriel christian blindfolded. blindfolding is illegal in italy. officers say theyowon't know h the photo got out. on friday italian police arsted him along with 19-year-old finnigan lee elder, both from northern california. family friends shocked at the allegations. >> i hope to god there is some missing link, some piece of the puzzle that hasn't come out yet. >> reporter: police say the pair confessed to stabbing 35-year-old officer mario rega in a drug deal gone wrong. according to court documents each blamed the other during interrogation. in a 911 call a witness claims

the suspects fled the scene saying, how did they escape? on a motor bike?on foot? on foot, on foot. police will be looking at the surveillance video from friday which shows two people running re. ti lder'sfr family said they haven't sayalh him since aniti i in aca stweement, plan to go to rome as soon as the state department assures us we will be sble to our son. meanwhile, a solemn tribut the coffin of the slain officer on display in rome on sunday as thousands paid final respects. his grieving widow prepares for his funeral on mtday a the same church where they married last month. >> sarah joins us from london. what's next in the investigation? >> kate, both suspects will remain in custody until the preliminary investigation is complete. under italian la anyone who participates in ae killing can

charged with murder, even if they didn't deliver the deadly blow. there's a lot at stake here. >> sarah, thankyo parts of the midwest are on alert for severe weather. reports of a possible tornado touching down just outside minnesota's twin cities. a tornado watch is in effect from southern minnesota all the wao central wisconsin until 10:00 p.m. eastern time. no reports of major damage at this hour. a horities in canada have expanded the manhunt for two teenagers wanted in the killing of an american woman and two others. now the military has joined the search as well. morgan chkey has the late details. >> reporter: a massive manhunt in canada. the military joining forces with police in a growing search. air crews tkling remote areas as officers go door to door, clearing hundred s of whomes. >>are activating all necessary resources to protect the public. >> reporter: the targets, teens cam macleod and briar smigelski

who may be near an area known for biting flies,os mquitos and polar bears. this is a bear encountered on the hunt for the suspects. >> this is challenging terrain, a large area with dense bupy, forest, swareas. >> reporter: the childhood friends wanted for murder last video. this surveillance the pair taking their time to t casually walkough a hardwareor ste. week afterptures a police say the two murdered three people including american china dees. friends describing her as a kind and adventurous soul family called for justice. >> they have absolutely nothing to lose. they're willing to risk anything. >> reporter: policeay she was on a road trip with her boyfriend lucas fowlerrehen they weound shot dead outside their broken down van. the two teen suspects are still

on therun. new york city's police department this weekend is grappling with a troubling trend. anothe o officern saturday took his own life, the fifth since june. on new york city's staten island, a silent salute for a sergeant lost to suicide. yesterday's death makes five officers gone since just last month. nypd commissioner james o'neil calls it a mental health crisis. >> depression is real. i don't feel down, i'llring myself out of it. >> rorter: across the nation ore police officers die by suicide than are killed in the line of duty. >> sometimes it's a downward spiral. unless there is intervention from the outside it's not going to stop. >> reporter: for weeks the nypd has been trying to reach 36,000 officers on social media. >> know what you are never, ever

alo alone. there is always someone thacan helpyou. >> reporter: encouraging anyone who needselp to reach out, call or text a hotline. the department planning new training and a peer support program. even with resources, officers across the country are reluctant sometimes to call, fearing judgment or job repercussions. that's what kept pdfficer david swales from finding help. >> i wish he would have called. he knew it was available to him. >> reporter: his wife melissa said she kept his anguish a secret. >> he was afraid that if the other officers knew they wouldn't want to work with him. >> reporter: they would judge him. >> yeah. that hk would be a ris or a liability. >> reporter: three years ago the family was suppose to go to disneyland on their youngest boy's second birthday but david locked himself in a bathroom. >> i still don't understand how we went from planning to go to disneyland for dinner to having

to plan a funeral. >> reporter: denise kay is a psychologist with the lapd. >> this is a popation that's very strong, reluctant to ask for help, to acknowledge that they are having a problem. they just suck it up. >> reporter: all the more reason the ph is on now to open dialogue about on the job stress and depression before anyone else is lost. >> we need to talk about it. we need all members of the police department to understand that to call for help isn't a weakness. it is a stre. >> reporter: across the u.s. only 3 to 5% of law enforcement agenci have specific suicide prevention programs. there's been a lot of discussion aboue how to bring resources to officers. for police officers or anyone needing help tonight call the national suicide prevention lifeline at 800-273-8255. now to an nfl star facing suspension tonight after testing

positive for performance-enhancing drug. golden tate of the new york giants said he didn't know it was banned and took that drug for a good reason. nbc's kathy park has moreep >>orter: super bowl champion golden tate signing a $37 million deal this spring with the new york giants. today, he's facing a four-game suspension the start of the seasonnc annouing on social media that he failed a drug test after taking fertility medication. i started the treatment prescribed to me and days later discovered it contained an ingredient on theanned substance list which stretes seve pages.e while tat didn't disclose the substance he tested positive for hese discontinued u adding the treatment didn't give him a competitive edge. >> the three big categories banned by the nfl that could be used are steroids, growth who mopes a

--d hormones an clonofin. >> players are responsible for what's in their bodies and a positive will not be excused because a player wasn't aware he was taking a prohibited substance. it is not the first time an nfl player violate the policy by using fertility drugs. in 2014 indianapolis colts defensive end robert this was suspended four games after testing positive. >> as physicians we don't always know what the person's work is prohibiting. it is up to the person andia th ph to look it up and say you have a banned substance here. we need to get permission beforehand. >> reporter: tate is appealing the imminent suspension. >> for him it's business asus ual. he's practicing, getting ready to play. this is between him and the league at this point. >> kathy joins us now. what can players do to avoid punishment if they need to take a drug like >> the nfl said they granted medical exemptions in the past t it comes with prior

approval. they are not aware of a request that has to do with fertility reasons. going back to tate, if he wins his appeal he'll no longer face a suspension. >> tha>> you. another sports note. history was made at the world's most famous bicycley. race to for the first time a south american won the tour du frce. egan bernal rode to victory on the champs-elysees in paris. at 22he's one of the youngesthe winners of t tour de france. with yoursmartphone, who else is listening when you say, "hey, siri". redwoods of g the california in the battle against climate change. this was me six years ago... and this is me now! i got liberty mutual. they customized my car insurance, so i only pay for what i need. then i won the lottery, got hair plu, and started working out. and so can you!

only pay for what you need. ♪ liberty. liberty. liberty. liberty. ♪ i didn't have to call 911.help. and i didn't have ca come get you. e you didn't have another heart attack. not today. you took our conversation about your chron t coronary artery diseaheart. even with a stent procedure, your condition can get worse over time,ri evenand keep you at ocedure, of blood clots. so you added xarelto®, to help keep you protected. xarelto®, when taken with low-dose aspiri is proven to further reduce to the risk of blood clots. that can cause heart attack, stroke, or cardiovascular death in people with cthonic cad. at's because while aspirin can help, it may not be yoough to manage risk of blood clots. in a clinical trial, almost 96%x of people takingelto®ha did not ve a cardiovascular event. don'wistop taking xarelto® thout talking to your doctor,

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there's two of them. they're multiplying. no, guys, its me. see, i'm real. i'm real! he thinks he's real. geico. over 75 years of savings and service. we ar back with new privacy concerns regarng siri inside your apple iphone. siri mayot be thenly one listening in on your conversations. molly hunter has the story. >> hey, siri, where's the best pizza? >> reporter: the idea behind siri is she's always there a always listening. >> whether it's amazon or apple or google, they are all buildin a big surveillance economy that makes its money watching you and me. >> reporter: as we reported, much like alexa and google's assistant, siri records you as

so. as you have activated h >> hey, siri, what's the weather? >> reporter: activation happens by accident attinconvenient s. >> i found something. >> it is rare you are heckled by your own mobile phone. >> reporter: a whistleblower tells theap guardian new when computers can't understand apple's human contractors take overnd can wiend up hearing drug deals, confidentialedical conversations and couples having sex. a spokesperson says a small portion of requests are analyzed to improve siri and dictation. >> the business model isn't to use humans to listen to you. it is to use computers to learn as much about yourit habs as possible. >> reporter: betterearn your habits because it is better for busiss. >> the question of whether they are listening to you, recording you, that's secondary in my mind to the larger issue which is that there are surveillance

systems built to try to predict what y like andhat you are going to do next so they can sell you things. >> rorter: that's the point. asthma cheens get smarter, expensive human resources won't be needed toisten in. >> this scares a lot of us. what can consumers do to protect themselves? >> theasiest thing is disable siri. go to settings on the phone. scroll down to siri and type listen for "hey, siri" and press home for siri. turn them off. that deletes your use data each time. >> molly, thank when we come back, the heights to which one man is going to fight climate change. also, the unique program -and...that's your basic three-point turn. -[ scoffs ] if you say so. ♪ -i'm sorry? -what teach here isn't telling you is thaapshot rewards safe drivers with discounts on car insurance. -what? ♪

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there is more p itical chaos in puerto rico after governor ricardo rossello announced his resignation. his dedicated replacement wanda vazquez said she doesn't want the top job and asked the departing governor to appoint someone else. rossello will step down friday following weeks ofass protests over a corruption scandal and his inappropriate texts that went public. in italy a spectacular show of nature this weekend. mount etna erupted in sicily filling the night sky with volcano ash and spewing out lava. two airports closed briefly. mount etna is the tallest and mostct ae volcano, erupting often and rarely causing damage. in this country they are the biggest, strongest trees in the world, the redwoods. it is that strength some hope to rness to slow climate change. anne thompson on one tree

farmer's higher calling. >> reporter: here in nature's cathedral, a ray of hope to combat climate change. it's only found by going up and up. jake, why come all the way up here to getr you clones. >> we want the best needles we can for propagation. >> reporter: that's where arborist jake milarin begs the process of cloning the ancient trees. >> close to a thousand years old. it's amazing. >> reporter: amazing when you considerwhat this forest has survived. it looks lush and dense b it is not what it was once or what some say should be. >> pretty much all of it was harvested in the 20th centuryy b humans for use in houses and other commercial uses. >> reporter: among the 5% leftt are wha jake's father david calls champion tree >> every time i walk throughwtn

old g redwood fornet it ver ceases to amaze teme. >> rep like the lorax, david speaks for the trees, touting their ability to absorb gas fuelling climate change. >> they are sucking up andki whisng out of the atmosphere, ten times the co2 of normal trees. >> reporter: he takes the tree cuttings and clones them in a northern michigan ywarehouse. are holding a 2,000-year-old redwood in your hand. >> reporter: it doesn't look 2,000 years old. >> we set the clock back. you are holding a tree that started its life when christ walked the earth. >> reporter: hes clo oak -- >> who wants to make another black willow. >> reporter: black willow, giant sequoia and redwoods and plants them around the globe including in san francisco. >> this tree could really help the future for our grandchildren around the world. n't it a beautiful thing? >> reporter: spreading his gospel, sharing what he and jake

see. a do you ever just take moment and look around and appreciate what this is? do.i i'm thankful and grateful. >> reporter: for the practical and essential beauty of trees. anne thompson, nbc news, california. >> it is a beautiful thing. when we come back, everybody in the pool. the pool. some life-sav humira patients, you inspire us. the way you triumph over adversity. and live your lis. that's why we redesigned humira. we wanted to make the experience better for you. now there' followininjection. we've reduced the size of the needle and removed the citrate buffers. and it has the same effectiveness you know and trust. humira citrate-free is here. a little change can make a big difference. humira can lowerr ability to fight infections. serious and sometimes fatal infections, including ulosis, and cancers, including lymphoma, have happened, as have blood, liver, and nervous system problems,

serious alions, and new or worsening heart failure. tell your doctor if you've been to areas where certain fungal infections are common and if you've had tb, hepatitis b, are prone to infections, or have flu-like symptoms or sores. don't start humira if you have an infection. ask your doctor about mira citrate-free. here's to you. ♪ ♪ ♪ but allstate actually helps you drive safely... with drivewise. it lets you know when you go too fast...

...andrake too hard. with feedback to help you drive safer. giving you the power to actually lower your cost. unfortunately, it can't do anything about that. now that you know the truth... are you in good hands? finally tonight, lifeguards have the reputation of being longtime swimmers, but a groou of y lifeguards here in new york took a different path. morgan ratfd explains. >> reporter: 17-year-old kaykel avila is spending her smer as a lifeguard at one of new york

city's busy ymcapools. remarkable because two years ago she couldn't swim. >> you watch it on tv and know arms. e to move your >> reporter: she's a graduate of a special phys ed class at grover cleveland high school where students learning how to swim also train to become lifeguards. how many show of han of you knew how towim before starting the program? nobody. none of you arers sw >> reporter: 70% of students come from families tt are economically disadvanted meaning they arely more like according to usa swimming to have no or low swimming ability, putting them at risk for drowning. the skills they learn in this class could save their own lives, too. lifeguard certification is also a pathway to a well paying summer job. up to $800 per week at city pools or beaches. >> i'm going to put into my

college fund and recently puerto rico had a hurricane and my family is struggling with money. so i'm going to send money over there. >> reporter: swim coach chris sullivan said it's about much more than just the money. >> it's amazing. the change in them, it makes se feelo gratified to see a kid become a young adult. reporter: since it started 13 yes ago the class produced more than 325 lifeguards. >> the school quote forwiing is never satisfied. that's something all the swimmers go by. >> reporter: life-saving lessons paying off in and out pool. morgan radford, nbc news, queens, new york. a greatidea. that's "nbc nightly news" on this sunday night. lester holt will be with you tomorrow. i'm kate snow. fors all of u at nbc news, have a great nigh . [bright c]

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