>> reporter: good evening from rio, las vegas, and a beautiful view of allegiant stadium, where the 49ers will take on the kansas city chiefs in sunday's super bowl lviii. they did have to put on the jerseys as the buildup for super sunday continues. sitting in the pocket, quarterback brock purdy seemed real comfortable answering question after question from the national media get the former mr. irrelevant is trying to lead the 49ers to a super bowl title in just his second last year in the nfl . >> we're hungry more than anything else. >> anytime you get that close and lose the last one, that is the hardest. >> reporter: kyle shanahan might be feeling a little pressure. four years ago, the niners had a 10 point lead with less than seven minutes to go in super bowl liv. than the chiefs rallied for the win. shanahan was also the offensive coordinator for the falcons when they blew a 25 point lead in the super bowl. >> i've broken my arm,

collarbone, a lot of things. those are more painful, but the things last a while, but it's about getting back there again. >> reporter: to be the chief this time around, the 49ers will have to find a way to contain patrick mahomes and tight end travis kelce. >> we all have real sound systems and real good players, so we'll see how it unfolds and a few trends are in las vegas,

if i were a betting man, i would bet a lot of people are betting on the big game sunday, and i would win that bet. millions of americans are expected to eat betting records in the super bowl. the american gaming association said nearly 68 million adults

will place a wager on the game, and those bettors are risking an estimated 23 billion bucks. the previous record set last last year, $16 billion in wages . >> that's crazy. >> they are in the perfect city for that. it could not have been -- i'm betting no rain inside the stadium and betting sunshine here because jeff told me. >> awesome forecast. >> it's like that jackpot when you're in vegas. saturday, 61, sunny skies. a little cloud cover sunday, but for any watch parties, that's perfect weather after what we have been dealing with the past couple of weeks. triple >>cherry. while the jackpot. that's going to do it for us. we're going to leave it tonight, the unprecedented verdict. the mother of a michigan school shooter found guilty of involuntary

manslaughter the jury convicting jennifer crumbley on all four counts for each of her son's victims. the first-of-its-kind trial for the parent of a school mass shooter. how the victims' families are reacting. also tonight, the u.s. appeals court ruling former president trump is not immune from prosecution in his federal election interference case. is the next stop the supreme court? just breaking, the drama on capitol hill. the vote by house republicans to impeach homeland secretary alejandro mayorkas failing on the floor more than 300 mudslides in los angeles. what that dangerous storm has brought, and where it's on the move tonight. our nbc news exclusive with iran's ambassador to the u.n., as the u.s. vows more retaliation against iran-backed militants in the middle east. do you think the risk of war is growing? >> yeah. >> and we ask how would iran react if there was a direct u.s. attack against it prince harry returning to the uk after king charles revealed his cancer diagnosis.

new ntsb photo evidence in that boeing midair were four bolts missing from that door plug before it left the factory and after his long health battle, tonight we remember country music star toby keith. >> announcer: this is "nbc nightly news" with lester holt. good evening and welcome. in a first-of-its-kind case, a parent of a convicted school shooter has been found criminally responsible for their child's deadly actions a michigan jury finding jennifer crumbley guilty on four counts of involuntary manslaughter in the deaths of four of her son's classmates in 2021 the case against her centered on her actions and inactions before her then 15-year-old son ethan shot ten students and a teacher at oxford high school in southeastern michigan. during the two-week trial, the prosecution leading the jury through the numerous opportunities it says jennifer crumbley had to intervene and

prevent the shooting, including warning signs about his mental condition, and her failure to keep him away from firearms maggie vespa has more on today's verdict and the emotional reaction >> reporter: tonight, an unprecedented verdict. >> we find the defendant guilty of involuntary manslaughter >> reporter: jennifer crumbley found guilty on four counts, one for each student her son killed, leaving the courtroom in handcuffs as the first parent in the u.s. ever convicted for their role in a mass school shooting committed by their child. the jury forewoman speaking out to nbc news >> it was very difficult. it wasn't an easy decision the thing that really hammered it home is that she was the last adult with the gun >> reporter: after the verdict, family members of those four students hugging prosecutors. the moment you heard the verdict, what went through your mind? >> well, that i can breathe. >> reporter: craig shilling lost his 17-year-old son justin >> he loved life and he deserved to live it >> reporter: the

historic verdict following seven days of emotional testimony, culminating with crumbley taking the stand in her own defense. >> i wish he would have killed us instead. >> reporter: prosecutors suggested she was a negligent mom who ignored mounting red flags about her son's behavior >> she did not give him the help that he wanted >> reporter: the defense arguing crumbley was an engaged parent. >> no one could have expected this, including mrs. crumbley. >> reporter: legal experts say this case may have implications far beyond this courthouse does this open the door for parents to be held accountable for mass shootings, school shootings in the future >> it absolutely does. i believe this will be used as persuasive precedent. >> reporter: but for steve st. juliana, it's simply justice for his 14-year-old daughter hana. anything you want to say to the jury? >> just thank you for using common sense >> and maggie, jennifer crumbley's trial may be over, but

her husband's is still to come. >> reporter: yeah, lester, that's right james crumbley's trial is set for march 5th, he's also charged with four counts of involuntary manslaughter and when jennifer crumbley is sentenced in april, she faces up to 15 years per count. lester >> maggie vespa, thank you. in washington, a federal appeals court ruled president trump can stand trial after being accused of unlawfully trying to overturn the 2020 election this after the court denied mr. trump's claim that he is immune from prosecution. laura jarrett has details. >> reporter: former president donald trump today dubbed citizen trump by a three-judge panel in washington, ruling mr. trump is not immune from prosecution. the court saying, "we cannot accept that the office of the presidency places its former occupants above the law for all time thereafter." the trump campaign saying he'll appeal the decision trump himself bemoaning the ruling,

saying, "a president of the united states must have full immunity in order to properly function and do what has to be done for the good of our country. special counsel jack smith charged mr. trump last summer for his efforts to reverse the 2020 election results and stop the peaceful transfer of power. >> we will never give up we will never concede. >> reporter: mr. trump's legal team has been trying to get the charges tossed out for months, arguing he should be completely immune from prosecution for any acts he took as president. the court today unpersuaded, saying, "we cannot accept former president trump's claim that a president has unbounded authority to commit crimes that would neutralize the most fundamental check on executive power, the recognition and implementation of election results." the trump campaign capitalizing on the court's decision today with a fund-raising plea, as the republican front-runner frequently uses his legal setbacks as fuel for his latest white house bid. >> if you have a president that doesn't

have immunity, he is never going to be free to do anything, because the opposing party will always indict him as soon as he leaves the white house. >> reporter: with today's ruling, mr. trump's only hope at avoiding trial is for the supreme court to find he is immune, which would have major implications in the other legal cases he faces, as well >> and laura joining me here. what are the next steps? what's the timeline ahead? >> reporter: well, lester, the court today said mr. trump has just until monday to appeal this to the u.s. supreme court now, it's unclear if the justices there will even take up the case but if they choose not to, this trial could happen as early as this summer, lester. >> all right, laura jarrett, thank you also tonight, the deadly storm slamming the west coast is on the move the storm triggering more than 300 mud slides in los angeles, damaging homes and burying cars, as the city received half a year's worth of rain in just three days 27 million remain under flood watches tonight. there is breaking news in congress

tonight, the effort in the house to impeach homeland security secretary alejandro mayorkas has failed. ryan nobles is at the capitol. ryan, what's the latest >> reporter: lester, this was a stunning development. the initial vote ended in a tie, forcing one republican to switch their vote to give them the option to bring the measure up at a later date. as house speaker mik johnson is still hoping at some point they'll be able to impeach the homeland security secretary tonight, drama on the house floor. republicans narrowly failing to impeach alejandro mayorkas, a big defeat after the house speaker laid out the case against the biden cabinet secretary. >> i don't believe there's ever been a cabinet secretary who so blatantly, openly, willfully, and without remorse did exactly the opposite of what the federal law requires him to do >> reporter: accusing him of allowing millions of migrants

to cross into the u.s. though at least two republicans joining democrats opposing it. >> it lowers the grounds of impeachment to the point where we can expect it to be leveled against every conservative supreme court justice, every future republican presidential cabinet member the moment democrats take control. >> reporter: conviction, which requires two-thirds of a senate majority, would be unlikely. it comes at the same time we have learned republicans have effectively killed the $118 billion bipartisan security funding package that included new measures to beef up border security gop critics say it's not tough enough to solve the migrant crisis but president biden placed the blame squarely on opposition from former president trump. >> every day between now and november, the american people are going to know that the only reason the border is not secure is donald trump and his maga republican friends. >> reporter: while republicans argue it's democrats who are playing politics >> the objective of this bill was, number one, to do nothing to do zero to secure the border but to let every democrat running for

office say, gosh, i wanted to secure the border but those mean republicans wouldn't let us >> reporter: tonight, senate democrats telling us they'll still hold a vote on the bill tomorrow. ryan nobles, nbc news, capitol hill overseas, more attacks today by the iran-backed houthi militia on ships in the red sea, as we get a closer look at how american forces are defending that vital waterway courtney kube is the only reporter embedded with the u.s. navy in the red sea. >> reporter: tonight, iranian-backed houthi militias showing no sign of backing down, attacking two more ships in the red sea with six missiles causing minor damage, according to u.s. officials. after the u.s. and british military struck three dozen houthi sites in yemen in an effort to deter houthi attacks on ships. the u.s. navy tasked with defending against them. >> the weapon we're most concerned with is ballistic missiles >> reporter: like the one that hit this ship in january

how would you describe the environment out here right now >> i'd say it's a pretty intense environment out here. >> reporter: as captain of the "uss mason," commander justin smith has to make a split-second decision to shoot down an incoming missile. >> we're talking a matter of seconds here but my decision, a commander decision based on whether i'm going to engage that inbound threat i have about 10 to 15 seconds of decision time >> reporter: the ship's spy radar first detects the missile launch hundreds of miles away sailors quickly put on their fire resistant gear as they assess what was launched. >> anti-ship ballistic missiles based off speed, altitude, and maneuvering, inbound mason. >> reporter: and the u.s. fires its own missile to hit the incoming houthi missile. here in the ship's control room, they practice shooting down missiles over and over in a rare interview, we spoke with the captain who runs operation prosperity guardian, which defends against houthi attacks.

>> i won't beat around the bush this is a kinetic environment. the houthis have caused a lot of mayhem out here. >> reporter: there have now been more than 40 attacks by the houthi militia since november, and the group is vowing not to back down. lester >> a fascinating look. all right, thank you, courtney. and with growing tensions in the middle east, i sat down with iran's ambassador to the united nations, in our exclusive interview, i asked him about the risk of war with the united states and about iran's relationship with militia groups that have attacked americans. do you think the risk of war is growing? >> yeah. >> i spoke to ambassador amir saied iravani just days after three u.s. soldiers died in a drone attack and with ongoing strikes on commercial ships in the red sea, the u.s. blaming iranian-backed militias much of the conversation centers on the level of control or influence that you, the iranian

government, has over these groups, the houthis, and other groups if you pick up the phone, can you end the attacks? >> no. when i say it is not the same case. the relation between iran and the resistance group in this region may be compared with the nato treaty. >> so you're calling this a defense pact? >> yeah, defense pact between the resistance group and iran they have their own decision they have their own choices. it is not related to a phone call to the houthis. >> houthi attacks that we've seen on commercial shipping, sophisticated weapons. is iran supplying those weapons? >> not at all. >> would iran prefer that the houthi attacks against commercial shipping, threatening u.s. naval vessels, do you wish those would stop are they helpful >> yeah, we encourage all of them to stop. >> you're encouraging them to stop >> we encourage them for to stop. we expect that the other side should also other side should encourage the israelis

to stop. >> on friday, the u.s. began what's expected to be a wave of attacks in response to the deaths of those american soldiers. if there's a american attack on iran or iranian interests, what do you foresee the reaction would be >> absolutely iran will have their own reaction we said clearly that if they attack in iran's soil or iran benefit or iran individuals all around the world, will have their own reaction, and we will defend, absolutely >> and i asked about news hamas has responded to an offer for a hostage deal >> there's been a response from the opposition, but -- yes, i'm sorry, from hamas. but it seems to be a little over the top. we're not sure where it is. >> how do you view the fact that a deal may come about soon? >> i think that if the other side accepts the condition of the

hamas, the cease-fire is possible. >> a lasting one >> a lasting one >> part of my conversation with iran's ambassador to the united nations britain's prime minister said today that king charles' cancer was caught early, after the news that the king was suffering from an undisclosed type of cancer charles was seen today for the first time since his diagnosis became public, as his younger son prince harry arrived from the united states to be with his father. in 60 seconds, a new revelation about that boeing max-9 door plug that blew off a plane in-flight. were bolts installed when they left the factory? what the photos say, next

a major development in the investigation into that door plug that blew off an alaska airlines flight last month. the ntsb saying it has photographic evidence the plug was not properly bolted when it left the boeing factory. here's tom costello.

>> reporter: the ntsb says this photo shows the failed alaska airlines door plug still on the boeing production line without at least three of the four bolts to hold it in place that door plug blew out two months after alaska received the plane. today's preliminary ntsb report says workers at the boeing plant removed the plug after it arrived from spirit aerosystems with damaged rivets. but once it was reinstalled, the bolts were missing last month, alaska's ceo showed us where the door plugs were supposed to be these are the missing bolts? potential missing bolts. >> yeah, these are the ones that would be the highest critical bolts that would be missing. these ones right here. >> make no mistake, this was a close call, too close. >> reporter: on capitol hill today, the faa chief said boeing quality control had clearly failed >> if you don't have that safety culture, i

think it's hard to make safe airplanes. >> reporter: and the faa doesn't have enough inspectors inside boeing to oversee production it may now use a third party for inspections rather than boeing's self-inspections >> i think we're going to need more boots on the ground we're going need more inspectors. >> reporter: boeing said today it's accountable for what happened, and an event like this must not happen on an airplane that leaves our factory. boeing is taking immediate action to strengthen quality the faa chief was asked would he fly on a max? he says if it's certified, it's safe lester >> all right, tom costello, thank you. coming up, why tonight is one of the most confusing of the entire primary season. we'll explain, next.

it's primary night in nevada, but don't get it mixed up with the nevada gop caucuses that's thursday. hallie jackson on why the state is holding both, and how voters are caught up in the confusion. >> reporter: for nevada republicans, two election days, two chances to vote, but only one actually counts sound confusing? you're not alone >> it doesn't make much sense to me. >> i think our voting system, frankly, is a mess >> reporter: tonight, a primary, like in new hampshire with ballots that do not include donald trump. >> do the caucus, not the primary. the primary is meaningless. >> reporter: on thursday, caucuses, like iowa has. only in this case, nikki haley is not an option >> talk to the people in nevada.

they will tell you the caucuses have been sealed up, bought, and paid for for a long time >> reporter: candidates cannot compete in both contests, and only the caucuses count when it comes to awarding the state's 26 delegates who go toward determining the party's nominee. bottom line, the gop primary here is really only symbolic. nevada's held caucuses for years, but in 2021, democrats passed a state law to move to a primary system republicans chose to keep caucuses, too do you think this was done to be able to help donald trump in nevada >> oh, i absolutely believe that's exactly why it was done. >> reporter: former clark county republican chair chuck muth worries the new process could turn off voters. >> i've been warning how stupid this was and what a public relations disaster it was going to be. i hate to say that i told you so, but i don't hate saying i told you so, because i did tell them that this was going to happen. >> reporter: now gop county chairs reporting thousands of calls from republicans, some mad, some mystified, set to vote and maybe vote again in a race with plenty of drama, but little suspense. hallie jackson, nbc news

and up next for us tonight, from humble beginnings to country music superstar. remembering the one and only toby keith. ♪ i should have learned to rope and ride ♪

finally, he is one of the biggest country music stars of all time tonight, we're

remembering toby keith, who passed away after a long health battle here is anne thompson. ♪ how do you like me now ♪ >> reporter: as a performer, toby keith was big, brash, and bold, spending three decades at or near the top of the country music charts a veritable hit machine. ♪ red solo cu i fill you up ♪ >> reporter: over a 20-year period, writing at least one chart-topping single each year. ♪ who's your daddy ♪ ♪ whiskey for my man beer for my horses ♪ >> reporter: keith was both popular and polarizing, wrapping himself in the red, white, and blue after 9/11 ♪ courtesy of the red white, and blue ♪ >> reporter: feuding with journalists and fellow performers, going after the dixie chicks in 2003, now known as the chicks, for criticizing then president george w. bush and the iraq war. he was beloved by many military families, and

performed at a concert for president trump's inauguration before he was a star, keith was an oil worker and a semi-pro football player in his native oklahoma. ♪ i want live me some more ♪ >> reporter: diagnosed with stomach cancer in 2021, keith kept performing at last year's people's choice awards, and then in las vegas in december. ♪ oh i should have been a cowboy ♪ >> reporter: defying the disease. >> this is what i do, and you can't let it define your future >> reporter: catchy and controversial, toby keith's talent and swagger secured his place in country music history. anne thompson, nbc news >> toby keith was 62 that's "nightly news" for this tuesday. thank you for watching, everyone i'm lester holt. please take care of yourself and each other.

i'm comin' home baby now (do-do-do-do-do-do-do-do) i'm comin' home now (come on home) comin' home baby now (you know i'm waitin' here for you) i'm comin' home now real soon (you've been gone) comin' home baby now (i don't know what i'm gonna do)

i'm comin' home i know i'm overdue (since you went away) expect me any day now real soon comin' home now (come on home) i'm comin' home baby now (you know i'm prayin' every night) that everything is gonna be fine (please come home) i'm comin' home baby now (i want to feel you hold me tight) expect to see me now anytime (when i'm in your arms i'll be alright) when you're in my arms i'll be fine hey i'm comin' home (come on home) comin' home baby now (you know i'm counting every day) i'm comin' home now yeah-yeah-yeah (use the phone) i'm comin' ho-ho-home baby now (and let me hear you say) i'm comin' home you're hearin' what i say (that you're comin' home) and i never will go away i'm comin' home comin' home now (come on home) i'm on my way home (oh baby say you're comin' home) that's what i say i say i'm comin' home (something's wrong) the road is long baby now (you ought to either write or

phone) i'm comin' home and never more to roam (baby tell me you're) baby i'm for sure comin' home. [ cheering and applause ] >> kelly: welcome to the kelly clarkson show, let's hear it for my man y'all! not all songs can one cover. i love that song. you hear it in a lot of movies, i've heard it so much, it's called "comin' home baby" if you didn't hear that enough. it was recorded in 1962 and earned him two grammy nominations. in 2008, michael buble recorded his own version,