>> we've had to divert ambulances over the last several weeks because the huge number of patients coming in. >> hospitals are forced to send people elsewhere as unvaccinated patients are strange resources. plus, the new data showing just how important those boosters are. the u.s. embassy in kiev is asking the state department to evacuate personnel as tensions remain high over fears that russia may try to invade ukraine, and nato supplied weapons are arriving in the country right now. new details in the case of brian laundrie, what rewrote about gabby petito's death in a notebook found near his remains and how the petito family is responding. a stunning discovery off the coast of tahiti. >> it shows how little we know about our planet. >> why researchers are so fascinated by this coral reef and the secrets it could unlock about climate change and the future of life on our planet. "newsroom" starts right now. good morning to you on this saturday, january 22nd, we're so grateful to have you. i'm christi paul. >> and i'm boris sanchez. thank you so much for joining us. you're live in the cnn newsroom. we start this morning with a tragedy. flags have been lowered to half staff in new york as the city mourns the loss of one of its finest. one officer was killed in a shooting last night, a second is in critical condition in what officials are describing as an ambush attack. >> rookie officer jason rivera died last night while responding to a domestic violence call. the officers are the latest to be shot in the line of duty. officials say three others have been shot this month alone. yesterday, while speaking to the u.s. conference of mayors, president biden addressed the challenges that police face every day. >> we shouldn't be cutting funding for police departments. i propose increasing funding. look, you know, we ask cops to do everything, including these psychologists and social workers. guess what, they need psychologists and social workers. >> cnn's polo sandoval joins us now live. polo, mayor eric adams is facing the first really big crisis of his mayorship after a string of violent attacks. >> only three weeks into office, too, boris, so there certainly is mounting pressure on the mayor to do something to address this as he promised that he would while campaigning, saying that he was of course the main democrat that has the ability to actually handle this level of violence we have seen on the streets. back to the tragic shooting that took place yesterday, what we understand is that jason rivera was among three officers that responded to a call of a mother that was having an argument with her 47-year-old son. another officer walked down a narrow hallway when the door swung open, according to delegates and a man identified as la shawn mcneil opened fire with a pistol. look at the photograph that was released by investigators showing that glock pistol with a high capacity drum magazine that was attached. we're still trying to find out exactly how this individual came into possession of this firearm since he does have prior arrests in new york city, including a probation for narcotics for an arrest in 2003. and four other arrests, including unlawful possession of a weapon, and also assaulting a police officer. now, eventually, though, the third officer that was in that apartment managed to return fire, shooting mcneil who we are told is currently in the hospital. what we are seeing right now from not just the police commissioner who is calling this loss just beyond comprehension, but also we are hearing from the mayor himself, who is certainly angry about this, calling on something to be done. in fact, he was at a vigil for a baby who was shot in the face by a stray bullet earlier this week when this particular shooting happened. >> an 11-month-old baby was shot just a few days ago. five officers were shot in this city. the unification of fighting this battle goes beyond the debate and rhetoric. it is time for us to save our city. and we are going to need everyone on the same page to accomplish this task. >> so after a very violent three weeks with various incidents that we've seen throughout the city here, this is certainly testing eric adams' vow to be able to respond and restore order and peace to neighborhoods who have seen high levels of violence recently. >> polo sandoval, thank you so much. last night, mayor adams called on washington to help get guns off american streets, and earlier today i spoke with the former police commissioner of philadelphia, charles ramsey. he says cities should not be waiting for federal help. listen to this. >> i can understand the mayor is frustrated. he's upset, he's asking washington to do somethingm. but quite frankly, washington can't get out of its way. our congress is quite useless when it comes to things like this. we have to deal with it at the local level the best we can. it's going to be a tough fight. last year we had increases in vio violent crimes in cities across the country, including the one i'm in right now, a record year in terms of homicides. so far this month, that number has exceeded last year's january total. this isn't going to get better on its own. we're going to have to take strong action, get the guns off the street, and more importantly, get the people using these guns off the street. they need to be incarcerated. >> we do have some good news to share with you this morning, growing optimism that the surge of the omicron variant of covid-19 is easing. covid hospitalizations are dropping in the northeast and the midwest with the average of new daily cases trending down compared to last week. >> plus, new cdc studies show the covid-19 booster shots are 90% effective against hospitalizations from omicron. and provide the best protection against the variant. >> but the cdc director, dr. rochelle walensky is stopping short of changing the definition of fully vaccinated to three doses, instead saying that the focus is on what it means to be quote up to date. >> and what we really are working to do is pivot the language to make sure that everybody is as up to date with their covid-19 vaccines as they personally could be, should be, based on when they get their last vaccine. so importantly right now, we're pivoting our language. >> right now, only 25% of americans have received a booster shot. health care leaders say the unvaccinated continue to make up the majority of covid patients in hospitals. dr. robert jansen now, the chief medical officer at grady health system in atlanta. that's where they're having to divert ambulances to other hospitals because of this surge. dr. jansen, thank you so much for being with us. that is what i want to ask you first and foremost because i think that's one of the most alarming pieces of information that we've gotten lately, that you are diverting ambulances bauds you just done have the resources to treat people. how long has that been necessary up to this point, and how is it affecting the hospitals that are receiving those patients? >> good morning, and thank you for having me. you know, we've been having to divert ambulances off and on for the past several weeks as the number of patients that are admitted with omicron variant of covid has increased, and, you know, we've reached a critical point where we have no room in the hospital or in the emergency room to take additional patients, and that's caused us to have to send ambulances to other facilities. the problem with that is that grady is the major trauma center for the city of atlanta. and when this is happening, patients sometimes have to go to places that are not as well equipped and accustomed to that type of patient. so that's devastating to people who need the care that we normally are able to deliver. >> i wanted to ask you, too, if you have any indication how that is affecting the care of the patients once they get rerouted. they're coming to you in a situation of an emergency, which usually means time is of the essence. >> right. >> and so particularly in trauma and patients with strokes or heart attacks, time is critical, and having the right resources available and the skill set to take care of those patients, and those first few hours is so important. so having patients go to hospitals that are not accustomed to that type of patient has a significant impact on those patients and, you know, their outcomes, and that's our biggest concern. >> you've argued that covid-19 isn't going away after this wave. that there will be other variants. we've had so many conversations with front line workers who are fatigued, frustrated to the point of desperation and depression. what is your level of concern for your staff, for the doctors, for the nurses who even have left the profession, even if they've done so temporarily? >> so we, you know, have taken a work force that was already under staffed and now we have started bringing in more and more patients, and it is demoralizing. it's discouraging. we already have difficulty having an adequate staff, and now they're having to take care of patients who, you know, some of this could have been prevented. and so it's discouraging to people. they feel like they're fighting a battle that other people are not fighting with them. having said that, they continue to do a great job. you know, our staff is incredible. they show up every day. they take care of patients every day. but then they have to go home, and many of them are dealing with, you know, sick loved ones at home as well. they have lives as well. and so they have to cope with all of this at this time is very difficult on them. >> it's interesting to hear you talk about how the staff and the doctors and nurses feel like they are fighting sometimes alone without -- without the fought of the people that come in, and we know that there would never be any compromise of care. it would not be unusual from a human standpoint to think that maybe some of the staff does have some resentment for people who come in unvaccinated, and again, some people are unvaccinated for limegitimate reasons in terms of their health would not allow for it. have you had those conversations? >> absolutely. i mean, it's human nature to be angry when you think something could have been prevented. and, you know, we talk to the staff about it. you know, they're open about it. but they're professionals, and they do their jobs, but it is very frustrating. you're absolutely right. some people legitimately could not be vaccinated. other people have just chosen not to be vaccinated, and that's their choice, and we will continue to provide the care, but the ones who are not vaccinated are the ones who are flocking to the hospitals right now. and that's creating the problem. >> before i let you go, cdc director rochelle walensky, we heard her just before this talking about shifting the verbiage for what up to date means, and fully vaccinated means. do you think that right now we are seeing the consequence of the confusion in protocol that we have seen up to this point? >>. >> i think we have to share some responsibility in that confusion, and by we, i mean health care workers and those folks who talk to the public. it has been confusing at times. and that's because the science has shifted. our understanding of the disease has shifted. omicron is just another variant of this pandemic. and we're still learning, and i think one of the things we have to emphasize is we are still learning so what we thought yesterday may not be what is true tomorrow. and we just have to be open about that. vaccines, i think three doses, it's been pretty clearly shown is what you need to have full protection at this time. but vaccines are not perfect, and we have to admit that. and some people still get infected, and occasionally even if you've had three doses, you may require hospitalization, but that is rare now. so, you know, the truth has changed because we're learning so much. >> yeah. dr. robert jansen, thinking about you and your staff always. thank you so much for everything that you do. and taking time for us. >> thank you, take care. >> you as well. so the house select committee investigating the january 6th insurrection now has all of the documents from the national archives that former president donald trump spent months trying to block. >> yeah, the supreme court cleared the way for the panel to receive all 700 plus pages earlier this week. and now these records could help answer some vital questions about what happened the day the attack on the capitol took place. cnn's annie griger joins us now. what do we know about the documents the national archives turned over to the committee. >> as you mentioned, all white house records go to the national archives and at the beginning of the investigation, it requested to get the records from the trump white house to be part of the investigation. as soon as they did that, trump tried to intervene and prevent the committee from getting those documents, and that then was -- heroe these documents were then tied up in court for a very long time, but the supreme court ruled earlier this week that the committee could then get those documents. the committee has in its posse possession over 700 pages that trump tried to keep secret. based on court filings, we know these documents contain handwritten notes from trump's chief of staff, mark meadows, who's refused to cooperate with the committee, call logs and visitor logs for trump and his vice president, mike pence, and as politico reported yesterday, these documents also contain a draft of a memo for a plan for how the government could seize voting machines, and this would halt the election certification process. now, obviously that didn't happen, but that new detail just shows how specific, you know, the documents that the committee is now having in its possession. and you know, just taking a step back, these documents can really fill a lot of investigative holes for the committee, answer a lot of questions about what was going on in the white house in the lead up to january 6th, and specifically, what trump was doing and who he was talking to on that day. >> we know lieutenant keith kellogg has spoken to the committee, spoke about ivanka trump being in the room a couple of times. what is the value of ivanka trump now being called, particularly voluntarily, to cooperate. why is that significant? >> so, christi, ivanka is the first trump family member that we know of that the committee has reached out to to speak directly, and ivanka was at the white house on january 6th and can speak a lot to the former president's state of mind as the attack was unfolding. we know that she went to talk to her father at least twice to try and stop the violence that was unfolding that day. we know she was in the oval office with her father and keith kellogg as you mentioned testified to this, listening to a phone call that trump was having with pence, the morning of january 6th, trying to convince him to not certify the election. so, you know, ivanka it provide a lot of key testimony to what her father, the former president was doing on january 6th. >> already. thank you so much. >> thank you, annie. making good on promises to help ukraine. the first shipment of u.s. directed assistance arriving in that country. up next, the message this sends to vladimir putin as the threat of an invasion looms. i brought in ensure max protein, with thirty grams of protein. those who tried me felt more energy in just two weeks! 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>> i think this is obviously not going to stop a very heavily armored russian military, if they so decide, saying they're not going to do that. this ammunition, will it change president putin's calculus, will it make him believe or understand that if his troops cross the border, there will be a higher rate of casualties than he realized. >> there's growing concern in kiev and the united states and among european allies that as diplomacy goes on, russia's troop build up continues. the british have sent some weapons systems to the ukrainians to take out a battlefield armor. the estonians have sent javelin missiles, they're good against t 272 tanks, which russia has a lot of. the latvians and lithuanians are sending missiles, which are useful against hospitaelicopter jets. there's a push to get weapons systems in the hand of the ukrainian, not with the quantity, and training, and flexibility to place them on the battlefield, the many places russia could come across the border in a timely fashion to be ready for that to make a military, a huge military difference to stop the russian military. it has to play on president putin's calculation here and potentially also potentially slow down a little and advance to allow other diplomacy to play out. as we heard from secretary of state antony blinken, if there's invasion from russia, diplomacy is off the table. all you're left with is the military hardware. >> nic, thank you for that. natasha, i want to ask you now, what more do we know about the reporting that the u.s. embassy is calling on the state department to authorize evacuations from ukraine. >> reporter: this is news we broke last night that the embassy in kiev has asked the state department for permission, essentially, for authorization to allow nonessential staff in the embassy and their families to evacuate, to head back to the u.s. amid these rising threats from russia that are causing a lot of concern that russia is going to move for a renewed invasion. this is something that antony blinken, the secretary of state last week when he was in kiev, he met with members of the embassy and told them that the u.s. was considering this kind of contingency planning. that the united states values the safety of american lives above all else and that if they needed to evacuate, then they would make plans to do that. now we know that this has, in fact, escalated to the point that the u.s. embassy in kiev feels that the threat is significant enough that they want to get as many people as they can at this moment out. now, that does not include essential staff, people that will need to be there to keep the embassy running because of course russia has not yet invaded and it remains to be seen whether they actually plan to do that. all of the signs are pointing in a very negative direction and this is evidence that the embassy is fearful if the personnel get caught in the cross fire, it could be a very messy and dangerous situation. now, we are told that the ukrainian president, vladimir, if the u.s. took the step of evacuating personnel from the embassy, it would be a dramatic overreaction. the secretary of state responding telling him above all the safety and security of u.s. personnel over seas is what the u.s. state department and u.s. government cares about the most. it remains to be seen when the evacuations could begin but we're told they could start as soon as next week. >> a move that would have enormous implications. nic robertson, natasha bertrand, thank you to both of you. with us to discuss the issues is republican congressman from florida, mike waltz, a combat decorated green beret and member of the armed services committee. grateful you're sharing part of your weekend with us. the armed services committee received pa classified briefing on the situation earlier this week. up to this point, have you seen any evidence that vladimir putin can be persuaded against an invasion of ukraine? >> in that briefing, there was bipartisan frustration. i think in my visit which was a bipartisan trip to ukraine a month ago, there was frustration at just how slowly this lethal aid has been moving in, and meanwhile, during these negotiations, which i think putin is really putting on for a show, for his domestic political propaganda, we have seen massive amounts of tanks, plains, and ships, moving from east to west, to the ukrainian boarder and it's not just the numbers it's the types of troops. many of them are from his reserves and national guard, which are primarily intended for occupation duty. so i do think this invasion is imminent. and we have to look at why putin is doing it now. he's doing it because he got away with it in 2014 under the obama administration. he's doing it because he is achieved his top foreign policy priority and an extension of the nuclear arms agreement at the beginning of this administration with no concessions but also the attack on the colonial pipeline with no retribution, and then of course afghanistan, which i think was incredibly damaging, devastating to american credibility. at the end of the day. oh, and we can't forget the nord stream two pipeline coming online which will allow putin to bypass eastern europe and ukraine while maintaining oil and gas, some of which is the dirtiest form of gas in the world, to head into western europe, which will compromise any type of unified response. >> congressman, you mentioned afghanistan and i specifically want to pull that thread because, you know, 20 years of war and a messy withdrawal, i don't think many americans are eager for foreign conflict, and there's a lot going on domestically that consumers the attention of our friends, families and neighbors. so why should americans watching right now pay attention to what's happening in ukraine, and how far do you think the u.s. should go to prevent an incursion? >> global stability has been underscored and supported by american leadership since world war ii, backed by power. in the course of a year, two major allies where we've had significant investment, both afghanistan and ukraine are taken over by a terrorist regime, and by russia. you know, americans should care because china's watching, north korea's watching, iran is watching and our eastern european allies are incredibly concerned and watching. authoritarianism is on the march when they believe that this white house doesn't have the political will to utilize american power and our alliances are america's greatest strength, and right now, i think that our credibility to support them is under great strain. >> so how far should the united states go in protecting ukrainian sovereignty? >> well, look, i mean, nobody is calling for hundreds of thousands of american boots on the ground. i think there's a lot more we can and should be doing to support ukraine. this lethal aid should have been moving faster. they had been asking for it for months. it's just now arriving. and it's the types of lethal aid. the things the russians most fear are those surface-to-air missiles, and antiship missiles, harpoon missiles. the ukrainians have been asking for them, and there's a real sense of the white house not wanting to provide it because they don't want to provoke putin. i think that's the exact opposite approach. it emboldens putin. the other piece is a strong statement from the president that we will continue to support any type of ukrainian resistance. we need to be focused on deterrence on the front end to complicate putin calculus, stop him up front, not talk about the response we're going to have after he invades by then. it will be too late, just as it was in 2014. so again, i think we need a real policy shift towards deterrence first, rather than aggressive response, and at the end of the day, sanctions have to be in both euros and dollars. and as long as germany, the strongest economy in europe is dependent on russia for its gas to heat its homes, i don't think you're going to see a strong response. russia knows it, and that's why they're not deterred by a sanctions first approach. >> mike, i want to ask you about the legislation that you introduced this week. specifically aimed to target the international olympic committee, given that china is hosting an olympics and simultaneously conducting a genocide against uyghurs, a bipartisan legislation that would strip the ioc of its tax exempt status. how does that help uyghurs, and why should americans care about what's happening in. >> the ioc is taxed as a 501 c 4 social welfare organization, and if you look at what's happening in china right now as we speak a million muslims in concentration camps, forced rape, forced torture, forced labor, sterilizations, abortion, that's going on. not to mention stamping out freedom in hong kong, tibet, unleashing covid on the world, covering it up and threatening taiwan. this is the last place the ioc should have been hosting the olympics. we have been asking them to move it for years, and of course we want our athletes to compete. it's the ioc that's put them in a position of ignoring their values and ignoring these atrocities in order to be able to compete, and secondly, i'm very concerned about their safety. they have been told not to take phones. not to take laptops, china is a surveillance tape, and not to speak out about any of this for fear of arrest. nbc itself isn't sending its broadcasters, i don't think this is a place we want to send young athletes, and finally on the tax status, that nbc contract, alone, is 7 1/2 billion dollars. and the ioc is 800 billion into beijing for its infrastructure. again, the tax -- the american taxpayer should not be subsidizing an organization that rightly took a stand against apartheid in south africa for 30 years, and banned any olympics there but is turning a blind eye to genocide, and the only difference really is the amount of money involved, and enough is enough. we need to take a moral stand in line with our values and our morals. >> i want to press you there, congressman. in announcing the bill, you note that quote, the corporate partners for the 2022 genocide olympics should be ashamed to be associated with the ioc, and the chinese communist parties propaganda ploy. you list coca-cola as one of those sponsors, one of many, that company along with several others that profit mightily make political contributions. kevin mccarthy's got -- $2 million to political campaigns. would you renounce donations affiliating from corporations profiting from china? >> i will renounce any that are sponsoring this genocide olympics, and they have lobbied heavily to kill an amendment to the defense bill that i had that said they shouldn't be making millions off defense contracts and pumping billions into china's military build up through its civil military fusion. where is a level of corporate patriotism here, and many of these companies preach social justice and good corporate governance here. they want to boycott major league baseball in georgia and take stands here. that doesn't stop at america's shores, particularly when you have an ongoing genocide as defined by multiple administrations and including this state department, again, when it comes to women's rights, when you have mass rape, sterilization and abortion campaign going on, that is gross, disgusting, these companies should be ashamed of themselves, and i certainly wouldn't take a dollar for them. >> plenty more questions to ask. unfortunately we have to leave the conversation there. congressman mike waltz, appreciate your time. thank you. >> thank you so much. >> stay with cnn, we'll be right back. get decision tech from fidelity. 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