we have it all. graphic testimony in the trial of ghislaine maxwell, the alleged accomplice of jeffrey epstein, the first accuser on the stand today claiming jeffrey epstein sexually assaulted her when she was just 14. telling the jury about the other person she says was most often in the room. the major reveal today amid jury selection in the trial of former police officer accused of shooting and killing daunte wright during a traffic stop. body camera video showing officer kim potter confusing her gun for her taser, yelling taser, taser, taser, then firing the fatal shot. she will now take the stand. former president trump's former chief of staff mark meadows now cooperating with the house committee investigating the january 6th capitol riot. what we've learned tonight. news coming in now, the major new development in the investigation of that deadly movie set shooting in santa fe. after following the case of former governor andrew cuomo, tonight the breaking news involving his brother, cnn anchor chris cuomo. tiger woods making news tonight. what he said today. and adele's big announcement. her next big move in the u.s. and our made in america christmas. your ideas already pouring in. >> announcer: from abc news world headquarters in new york, this is "world news tonight" with david muir. good evening. great to have you with us on a busy tuesday night. there's breaking news on this omicron variant, what the cdc is doing in the u.s. to track this. we begin with the deadly school shooting in michigan at oxford high school, about an hour north of detroit. three students killed, at least eight others injured including a teacher. an alleged lone gunman, a 15-year-old student is in custody at this hour. police say he was armed with a semi-automatic handgun. multiple agencies responding to the call of an active shooter. ambulances in the driveway. the school principal getting on the p.a. with the code word for lockdown. the stories of students barricading themselves inside. teachers putting paper on the windows of classrooms, then barricading the doors with tables. some students climbing through a window running for their lives across the snow. others carried out on stretchers to the ambulances waiting outside. of course that sadly familiar students taken to a nearby location, this time a super market to wait for their parents. we saw some of those reunions today. abc's chief justice correspondent pierre thomas leading us off tonight. >> reporter: today at yet another school, students, teachers, and parents terrified and scrambling after shots fired on campus. >> they're requesting medical assistance. multiple ambulances if possible. >> reporter: this time at oxford high school some 40 miles north of detroit. this video showing students in the classroom running for their lives. local tv stations breaking into programming. >> we are now looking at at least eight law enforcement officers with long guns who are entering the school. >> reporter: three students killed, eight others shot, including a teacher. student john edwards describing the chaos to our affiliate wxyz. >> over the p.a. we hear our principal, mr. wolf, shouting, alice, lockdown, alice lockdown. and then we heard the gunshots in the class. and so we locked down, turned the lights off. our teacher got paper taped over the window on the door and got his two big tables and barricaded the door. i was just scared. i was praying for, you know, my safety, my friend's safety. you know, everyone's safety. >> reporter: edwards able to call his mother. >> i could hear the fear in his voice. and i tell him, i said, baby i'm on my way. i've never been so scared in my life. >> reporter: school officials left reeling. >> of course i'm shocked. it's devastating. >> reporter: the suspected shooter a 15-year-old sophomore at the school, allegedly armed with a semi-automatic handgun. >> he fired multiple shots. we're thinking 15 to 20 shots fired. >> reporter: treshan bryant telling a reporter he was worried something would happen at school today, so he says he stayed up. >> so you had been hearing that there was going to be a possible shooting at the school. >> yes, i did. i heard it multiple times. >> reporter: an emotional governor whitmore on the scene today. >> this is every parent's worst nightmare. >> reporter: there was no word on motive. we're told the suspect quickly asked for an attorney. tonight police are conducting a search at the young man's home. at this point they do not believe that anyone acted with him. he acted alone. david? >> pierre thomas leading us off tonight. pierre, thank you. we move on to the new variant omicron, now spreading across the globe and what the cdc director, dr. rochelle walensky said about what's being done in the u.s. now. she said one out of every seven new cases is being sequenced. now confirmed cases in at least 20 countries. three more countries in just the past 24 hours. this evening the seemingly different messages from moderna and pfizer about the vaccines and how well they might protect people against omicron. tonight why the level of antibodies in your system after both vaccine shots and the booster is so important. here's abc's stephanie ramos. >> reporter: with the new variant spreading around the globe, the cdc director tonight says the country is on high alert and expanding surveillance in search of the first omicron case in the u.s. >> we have the tools and surveillance in place to identify the omicron variant. we also have the tools to prevent omicron from increasing the strain on our society and our health care system. >> reporter: the administration offering free covid testing for some international travelers at airports in new york, atlanta, newark and san francisco. and labs around the country sequencing one in seven covid positive test samples. i'm here at new york state department of health, wadsworth lab in albany, new york, where scientists are taking a closer look at positive covid samples, about 800 of them a week. researchers here started hunting for omicron just as soon as the variant, with its 50 mutations, was identified. >> is it possible it's in the air and that it's already here in the u.s.? >> that is absolutely entirely possible. the statistical power of the sequencing programs and the surveillance programs is pretty high. so i think we should see it fairly promptly. >> reporter: more than 240 cases of omicron have now been confirmed in 20 countries. but tonight there are new questions about where it originated. dutch officials now confirming two cases of omicron were in the netherlands before it was detected in passengers arriving friday from south africa. covid cases in south africa spiking 53% in just the last day. 10% of hospital admissions in the omicron epicenter there are reportedly unvaccinated children under 2 years old, a similar trend seen during the delta wave. but after some doctors reported omicron symptoms in south africa are mild, dr. anthony fauci cautioning that it's too soon to draw conclusions. >> the physicians, mostly private physicians, who've been seeing patients, are seeing that they appear to be a less of a severity of illness. most of those are many younger individuals. we believe that it is too soon to tell what the level of severity is. >> reporter: the white house today reassuring americans that if necessary, it would take about three months for vaccines makers to update the vaccine for omicron and get shots into arms. >> the estimate of a few months is all inclusive. >> reporter: just hours after moderna's ceo warned the vaccines will be less effective at tackling omicron, saying all the scientists i've talked to say this is not going to be good, the founder of pfizer's partner biontech said even if the variant brings more breakthrough infections, the vaccine should protect the vaccinated from severe illness. tonight health authorities reminding americans a booster shot is the best protection saying antibody levels are higher after the third shot than the second. >> we know from every variant that we have dealt with that the more neutralizing antibodies you have on board, the more effective those vaccines are against variants. and we expect, even if it's not perfect, certainly the more neutralizing antibodies, the fact that you're boosted, the greater protection you can have. >> reporter: dr. anthony fauci echoing that point just today. >> particularly when you boost it, you get a level so high, that even if the mutations of various variants diminish that level of protection, you're still within the range of some degree of protection. >> continuing to saying there will be some degree of protection. news tonight the fda panel has voted in favor of authorizing merck's anti-viral pill for covid. it's the first anti-viral pill approved? >> reporter: the pill was found to be 30% effective. that is not as high as expected. advisers questioned whether it would be safe for children and pregnant women. the final decision now goes to the fda, but this would be the first anti-viral covid pill you can take at home with a prescription. david? >> stephanie ramos tonight. stephanie, thank you. we turn to the difficult testimony in the sex trafficking trial of ghislaine maxwell, jeffrey epstein's friend and alleged accomplice. the first of her accusers taking the stand today. the witness claiming epstein began sexually assaulting her when she was just 14. telling the jury about the other person most often in the room. here's abc's erielle reshef. >> reporter: tonight, socialite ghislaine maxwell, close associate of convicted sex offender jeffrey epstein, face to face with one of her accusers in a criminal trial gaining international attention. the woman, identified only by the pseudonym jane telling the jury that she met maxwell and the disgraced financier the summer after 7th grade at a prestigious camp where he was a major donor. jane claiming her first sexual contact with epstein was at his palm beach house in 1994 when she was just 14 and that those sexual encounters, including explicit massages, happened during every visit. and when asked who was most often in the room, other than epstein, jane replying ghislaine maxwell, pointing to the 59-year-old, alleging it was maxwell who showed her how jeffery likes to be massaged. >> this is very powerful, very emotional, very personal testimony coming from this witness. >> reporter: earlier today epstein's long time pilot larry visoski testifying that epstein introduced him to jane in the cockpit more than two decades ago. remembering her as a mature woman, with piercing, powder blue eyes, but claiming he did not know her age. visoski also saying he only knew who was on board the jet if it was someone noteworthy, like former presidents bill clinton, donald trump and prince andrew, all of whom are known to have socialized with epstein in the past. visoski emphatic he never saw any sexual activity on board. maxwell has pleaded not guilty to all six federal counts. her defense team and family arguing she has been a scapegoat for authorities. >> the challenge for prosecutors is making sure they don't focus too much just on jeffrey epstein. that's exactly what the defense is arguing. >> reporter: maxwell's attorneys stressed that 20 years have gone by and questioned jane about why it took her so long to come forward with allegations against maxwell. they'll continue their cross examination tomorrow. david? >> erielle reshef, thank you. jury selection is under way in the high profile trial of the former minnesota police officer, kim potter, in the killing of daunte wright. the police body cam showing her confusing her gun with her taser. today her attorneys telling jurors she will testify. warning tonight, the images are disturbing. here's alex perez. >> reporter: tonight, the bombshell revelation in court. defense attorneys announcing during jury selection that former police officer kim potter, who says she mistakenly shot daunte wright with her gun instead of a taser, will take the witness stand in her own trial. >> if you're selected, officer potter will testify and tell you what she remembered happened. >> right, right. >> reporter: four jurors selected today, two men and two women. potter, who's charged with first and second degree manslaughter, says she pulled 20-year-old wright over for expired tags, when she discovered he had a warrant for his arrest. lawyers for potter, a former 26-year police veteran, argue she intended to grab her taser when she mistakenly grabbed her gun, and pulled the trigger. >> i'll tase you! taser taser taser! >> reporter: we've frozen the body camera video just before potter fires the single bullet to the chest, killing wright, the father of a young son. >> holy [ bleep ]. i just shot him. >> reporter: wright's family emotional and demanding justice. >> daunte should be here with us now. he truly did not deserve this. >> reporter: david, this is only the second time a trial in minnesota is streamed to the public. the first was the case against derek chauvin for the murder of george floyd. in fact the potter case is happening in the same courtroom. opening arguments in the potter trial set for december 8th. david? >> alex perez with us tonight. thank you. from washington tonight former president trump's chief of staff mark meadows is now cooperating with the committee investigating the january 6th capital riot. it is a shift for one of donald trump's closest advisers who weeks ago defied a subpoena, refusing to testify. meadows has produced records to the committee and will appear for a deposition. to the economy and wall street reacting to the federal reserve chair jerome powell today and what he said about the uncertainty surrounding the new variant. the dow falling 652 points, nearly 2%. powell testifying before congress. >> the recent rise in covid-19 cases and the emergence of the omicron variant pose risks to the employment and economic activity and increased uncertainty for inflation. >> the market reacting to news powell suggesting he could remove pandemic era financial support in the next few months. when we come back on a busy night, we've been following the investigation involving former new york governor andrew cuomo. tonight the news on his brother, cnn anchor chris cuomo. take a moment to pause and ask, why did you get vaccinated against pneumococcal pneumonia? 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they're coming. the singer announcing her new deal with las vegas at caesars palace taking the stage for four months, two shows per weekend january 21st through april 16th. france bestowing its highest honor on legendary performer josephine baker. the first black woman inducted. an iconic american born performer, a french spy in world war ii. of course a civil rights activist. the french president emmanuel macron calling her a woman defending humankind. american and french. when we come back our made in america christmas and our gifts that give more than once. >> announcer: abc's "world news tonight" with david muir sponsored by pacific life. over 150 years of strength and stability. confidence in every step of your journey. ♪ helping them discover their dreams is one of the best parts of being a parent. one of the most important is giving them ways to fulfill them. for over 150 years, generations have trusted the strength and stability of pacific life. because life insurance can help protect and provide for the financial futures of the ones we love. talk to a financial professional about pacific life. my auntie called me. talk to a financial professional she said uncle's had a heart attack. i needed him to be here. your heart isn't just yours. protect it with bayer aspirin. be sure to talk to your doctor before you begin an aspirin regimen. ♪ ♪ there are beautiful ideas that remain in the dark. but with our new multi-cloud experience, you have the flexibility you need to unveil them to the world. ♪ no one can deliver your mom's homemade short ribs. that's why instacart helps deliver the ingredients. and you add the love. ♪ thousands of women with metastatic breast cancer are living in the moment and taking ibrance. ibrance with an aromatase inhibitor is for postmenopausal women or for men with hr+, her2- metastatic breast cancer as the first hormonal based therapy. ibrance plus letrozole significantly delayed disease progression versus letrozole. ibrance may cause low white blood cell counts that may lead to serious infections. ibrance may cause severe inflammation of the lungs. both of these can lead to death. tell your doctor if you have new or worsening chest pain, cough, or trouble breathing. before taking ibrance, tell your doctor if you have fever, chills, or other signs of infection, liver or kidney problems, are or plan to become pregnant, or are breastfeeding. for more information about side effects talk to your doctor. ♪ be in your moment. ask your doctor about ibrance. finally tonight our made in america christmas, on this giving tuesday the small businesses giving back too. on this giving tuesday the made in america gifts that gave in more ways than one. in northfield, vermont, this sock company hard at work. sewing socks just in time for winter. steve, jessica, trevor, james pointing to his. ralene working there more than 20 years. >> hi, david. >> reporter: ian mason, a new hire. >> i was ecstatic when i was hired. socks are made in america. it gave me a sense of pride. >> reporter: for years on giving tuesday darn tough has donated their online sales to the vermont food bank. order online tonight. just listen to this. >> all: hi, david. we did it. we donated 1 million meals. >> reporter: 1 million meals donated to the food bank since they started this effort years ago. they're still going tonight. in ipswich, massachusetts, ipswich river craft. >> we're going into the cutting room. >> reporter: kevin cutting. sarah sanding. emma painting. >> hey, david. >> reporter: owner pamela tomlin with the finished products. what are they making? >> what we're making are nautical flag signs. every letter in the alphabet has a different flag. so we spell out last names, boat names, initials and we're making one for you. >> reporter: one they say they're making for us. with every plaque they sell they give back too. a service plaque. >> this is a service flag. it has a star in the middle. >> reporter: under three flags representing the service member's initials. >> we'll give $25 for every sign sold to homes for our troops and that's an organization that basically makes housing for vets that are disabled. >> reporter: they started this in the pandemic. they've now made 1,600 signs revealing what's on ours. >> in case you're wondering what it says, come look right over here. it says made in america. >> reporter: tonight eager to be on our made in america christmas list and eager to give back. >> all: made in america. >> we love it. keep your ideas coming. we're just getting started. good night. >> dozens involved, three arrested, and one released. that may have been a mistake, but is it too late? >> high demand for booster shots leaving several pharmacies to cancel or postpone appointments. we can tell you how you can get your shot. >> i had to leave my parents. >> i will introduce you to a life-changing organization that could benefit from your support on this day of giving. >> building a better bay area, moving forward, finding solutions. this is abc 7 news. >> i think it is a matter of time before it is found in the united states and locally. >> a matter of time before the newest threat from coronavirus comes near, but we will be well prepared. thank you for joining us. dan: administration is considering requiring every traveler who enters the u.s. to be tested one day before morning flights, regardless -- before boarding flights, regardless of vaccination status. >> cases of the omicron variant have been detected in more than 20 countries. no cases have been detected yet in the u.s. there soon could be another treatment to fight covid-19. dan: an advisory committee today endorsed a pill from merck. their concerns about the risks to pregnant women and children. ama: we talked to a local expert about omicron. he is focused on three things. >> there are three things we still need to know about this virus. is it more transmissible? does it make people sicker than the current virus? and what is the protection of vaccines? >> dr. covax says at this time he does not expect additional restrictions in san francisco because of the new variant. he