right now on "america this morning," aviation catastrophe? airlines issue a warning about the impact they say 5g internet wireless service will have on travel. the new statement from the faa overnight as the clock ticks down to tomorrow's 5g rollout. happening right now, tensions with russia rising. the new troop movements raising concerns that vladiuld be ppang ukraine and what doing ou> theelg storyhewmage o disaster turning deadly. a woman swept out to sea trying to rescue her dogs. the challenge for aid organizations trying to reach the eruption zone. here at home, two women attacked and killed in broad

daylight. police say in both cases homeless men were to blame. the growing problem on the streets and what experts say needs to be done. a pretty penny. how an amateur sleuth stumbled upon a nearly 800-year-old gold coin and what it's worth now. later, something that helps a lot of people fall asleep at night just got changed and people are not happy. good tuesday morning, everyone. i'm andrew dymburt. >> i'm faith abubey. mona is off. we begin with growing concern about the safety of air travel. >> airlines say tomorrow's rollout of 5g wireless internet service could cause an aviation catastrophe and strand thousands of americans because the signals can interfere with crucial instruments used by pilot. >> while 5g service has been deployed overseas critics say 5g here will be more powerful. abc's alex presha explains.

>> reporter: the airlines are warning of a possible crisis tomorrow when at&t and verizon are set to deploy new faster 5g wireless service. the concern is signals could interfere with radar altimeters. how far they are from the ground helping them land in poor visibility. >> let us be clear, this is unsafe. the manufacturers have said so. our airlines are saying so. and so are pilot groups. >> reporter: other countries have launched similar 5g signals but in france the signals are permanently blocked near airports protecting the final minute and a half. in the u.s. they will only be blocked for the next six months and for just the final 20

seconds of a landing. some have written to the biden administration requesting 5g signals be kept at least two miles away from airports or risk catastrophic disruption. they add huge swaths of the country's fleet could be unusable which could potentially strand tens of thousands overseas. >> we're not going to fly the airplane unless it's safe. we're going to yell from the rooftops that we need to stop this, take pause. >> reporter: verizon and at&t have not commented on the letter. earlier this month they declined a request by the faa to delay the launch by two weeks. the faa saying in a new statement that the agency continues to work with the aviation industry and wireless companies to try to limit 5g related flight delays and cancellations. alex presha, abc news, new york. the other big story this morning, growing tensions with russia in the showdown over ukraine. russian troops are now arriving in belarus along with heavy equipment. it is reportedly in preparation

for military exercises but raising more concern about a looming invasion. russia is conducting drills near the ukrainian border where 100,000 of its troops are deployed. a group of u.s. senators who traveled to ukraine had a message for vladimir putin. >> if russia moves any further into ukraine, there's going to be significant, serious unprecedented crushing sanctions on russia from the united states. i think what we need to explain to russia is this is not going to be bloodless. >> those sanctions could include shutting off russia from the global financial system. russia is demanding ukraine be blocked from joining nato but the u.s. has rejected that demand, and now talks have gone nowhere. we're learning new details about what it was like inside a texas synagogue during that 11-hour hostage standoff over the weekend. one of the men held hostage is now describing the ordeal including the moment the gunman decided to put down his gun to grab a soda. the congregation

of a texas synagogue gathered last night for the first time since a rabbi and three members were taken hostage during a 11-hour standoff. >> my rabbi, rabbi charlie cytron-walker. [ applause ] >> reporter: rabbi charlie cytron-walker was met with applause at a healing service and spoke about the daring escape. >> very few of us are doing okay right now. we'll get through this. a huge thank you to the three amazing individuals who joined me on shabbat morning to pray in person and somehow together we made it through that traumatic ordeal. >> reporter: on saturday police say british season malik faisal akram who reportedly had mental health issues entered the synagogue carrying a gun and internetened to kill hostages unless affia siddiqui was set free from a prison in nearby

fort worth. one hostage, jeffrey cohen said akram did allow them to call their families. >> he claims he has a bomb. things don't look good right now. i love you and remember me. >> reporter: cohen says he and the rabbi saw their chance to escape when akram put down his gun to grab a soda. >> that's when rabbi charlie yelled run and threw the chair at him. my friend got one step in front of me. that was the guy that was feeling poorly so i grabbed him under the arms and pushed him out. >> i told them to go. i threw a chair at the gunman and headed for the door. >> reporter: akram was killed after the hostages escaped. investigators say akram flew to texas from new york possibly on new year's eve and bought the gun possibly from someone at a homeless shelter.

both the gunman and cohen said the training they received saved their lives. >> it taught me to be aware of my surroundings, to know where the exits are and then the rest of that is run, hide, fight, and that's what we did. >> reporter: well, authorities in england have detained akram's two sons. akram lived there before traveling to the u.s. turning to the pandemic, new research on the effectiveness of a fourth covid vaccine shot. scientists in israel where fourth doses have been administered to high risk patients say the fourth shot raised antibody levels but likely not enough to prevent breakthrough infections. fourth doses have not been authorized in the u.s. meanwhile vaccinemaker moderna says it's working on one shot for covid and the flu. the ceo says it could be available by the fall of next year. a headline from washington, the chairman of the joints chiefs of staff has tested positive for covid. general mark milley is reportedly experiencing minor

symptoms. when it comes to testing americans can now buy up to eight at home covid tests per month and then submit receipts to your health insurance company for reimbursement. in the meantime, the government's website for ordering free tests, covidtests.gov launches tomorrow. two are dead on tonga after that massive volcanic eruption and that number is expected to rise. the explosion followed by a tsunami devastated the small country cutting off outside communication. some of the waves were as high as 30 feet. before and after satellite images show many areas now covered in a heavy coat of volcanic ash. emergency crews say they're now facing several obstacles trying to reach the victims. >> all communication with our local red cross team for the last 48 hours has been impossible, and we don't really know whether there's going to be another major eruption at this point in time, so it's difficult to send out any naval ships or

relief boats to those outer islands to see what damage there is or what the needs people might have. >> reporter: a british woman is one of two people confirmed dead. a wave swept her away as she tried to save her dogs. here in the u.s., the cleanup just beginning after a major winter storm along the east coast. powerful winds ripped the roof off a nursing home in maine. dozens of residents were evacuated. many new england coastal towns flooded by rain and the high tide. a front loader was needed to carry people to safety in niantic, connecticut. >> time now for a look at your tuesday forecast. black ice is a big concern across a large part of the country this morning. these drivers in raleigh, north carolina, were struggling on the icy roads yesterday. luckily temperatures will rise and reach the 40s today. on radar there's snow in the northern plains and upper

midwest, up to 8 inches possible and snow will fall in the northern rockies. checking today's high temperatures, 47 in seattle and 49 in kansas city. more frigid air moves into the midwest tomorrow. coming up, new video of an elephant charging at a group of tourists. also ahead, what we are learning about two women who police say were randomly attacked and killed by homeless men in the middle of the day. the growing problem on the streets of america coming up. plus, the massive chain reaction explosion caught on camera.

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a family of four was inside, not seriously hurt. video shot by witnesses is part of the ongoing investigation by park officials who want to know what led to the attack. back in this country, two more deadly attacks in broad daylight putting a spotlight on growing problem. big city crime, repeat offenders and mental health illness. in both cases the police say the women were attacked by homeless men. >> reporter: this morning police in los angeles are searching for this man, wanted for fatally stabbing 23-year-old ucla grad student working at furniture store when police say she was randomly attacked. say this surveillance video shows the suspect moments later. >> keeping close eye. there is a lot of transients come through. >> reporter: same day, 70-year-old nurse waiting for bus in downtown los angeles was

attacked by man police believe was homeless, later died from injuries. >> sad, sad to hear, you know. getting ready to retire, this is what happens. >> reporter: in los angeles, 10% of the nearly 400 homicides in 2021 had a homeless suspect. and homicides were up more than 50% compared to 2019 before the pandemic. >> just think there's a lot of people out there on the streets that are homeless that really need help. they need to be seen and evaluated. >> reporter: meanwhile in new york city, the nation's largest subway system is plagued by a rise in violent crime and police say many of the attackers are homeless. >> yes i did! >> reporter: this past weekend police say this homeless man with several prior arrests confessed to randomly pushing 40-year-old go in front of a subway train inim square.

>> a compassionate soul. >> she spent her spare time volunteering to help the homeless. >> clearly had a strong passion working one-on-one with populations in need. >> reporter: advocates say the spike in big city crime shows urgent need to improve access to mental health services, problem made even worse by the pandemic. fiery explosion in cobb county, georgia, propane truck up in flames, huge fireballs into the air, carrying 150 small propane tanks that explodes as firefighters tried to put out the fire. luckily no one was hurt. more sticker shock, juice prices could leave you sour. mom on a mission, mom on a mission, 37-year-old mother of two ever wonder what everyone's doing on their phones? they're banking, with bank of america.

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a disease that is affecting trees there and the fruits that are being harvested are smaller than usual. we turn now to a mom on a mission. a full time real estate agent and mother of two set a record with her running shoes and some fierce determination. meet the 37-year-old mom who just ran into the record books. >> i keep checking it to make sure that that's what i ran. i just can't believe it. >> reporter: keira d'amato finished the houston marathon in 2:19:12. the fastest marathon time for an american woman crushing the previous record set 16 years ago by a full 30 seconds. >> part of me just can't believe this is happening and the other part is like, this is happening because you worked your tail off, career r you worked so hard getting here. >> reporter: and getting here wasn't easy. a four-time all-american runner in college d'amato suffered an ankle injury after graduation which appeared to end her running days back in 2008 but eight years later she laced up her shoes again running her

first marathon in 2017 just seven months after giving birth to her second child. one year later she was fast enough to qualify for the olympic team trials. >> there we go. >> reporter: and fast forward to this past weekend. her kids, tommy and quinn, hugging her at the finish line as she became a record breaker. >> i think that this dream was gone a decade ago and somehow i just believed that, you know, you just remember. >> it's kind of like mom is famous and it's cool to have a fmous mother. >> they were part of the journey and sacrifice. when i crossed the line and they were there, oh, man, i just -- i am just one of the happiest. >> reporter: she later tweeted the thing i am most excited about is some girl/woman saw it and thought, i can do that. i know they will and i'll be rooting for them. >> at the same event a new women's half marathon record was also set by a mom.

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checking today's top stories, the senate begins debate today on voting rights legislation that is all but tern to fail even after martin luther king jr.'s family demanded action yesterday. republicans remain opposed saying elections should be left to the states. airlines warning that the rollout of 5g wireless services tomorrow could lead to thousands of flight cancellations. they say the klg could interfere with the flight instruments. they want the signals to be kept two miles away from the airport. the family of a worker killed in a tornado that destroyed an amazon warehouse filed a wrongful death lawsuit saying the company failed to warn employees or get them to safe areas. amazon says always safety codes were followed. rain along the pacific

northwest coast today. and finally a big honor for a hockey trail blazer 64 years after he broke the nhl's color barrier. >> will ganss has his story. >> reporter: today, willie o'ree joining that exclusive group of hockey legends whose jerseys have been retired when his 22 is raised to the rafters in boston. >> it's overwhelming, and i'm just thrilled to death. >> reporter: the 86-year-old reflecting on breaking the color barrier in nhl, becoming the league's first black player in 1958 with the boston bruins. >> i got it from the fans, the racial remarks and slurs, from opposing players, but i just let it in one ear, out the other. if i fought every time someone called me a name, would be in penalty box all the time. later on i did gain the respect of the fans and players on the opposition. >> reporter: after injury left him permanently blind in one

eye, willie overcame that obstacle, too. >> i just said, forget about what you can't see and concentrate on what you can see. >> reporter: willie's family assuming he regained his his because he was playing so well. >> i was totally blind, never told my parents. >> reporter: or scouts and coaches. >> kept it a secret, went to the training camp. make the team with one eye, just don't say anything. >> reporter: now, willie is looking to the future as a diversity ambassador. less than 6% of nhl players right now are people of color, even so, willie remains optimistic. >> there are more black girls and black boys and players of color playing hockey today than ever before, so we're going in the right direction. >> reporter: the city of boston has proclaimed today has proclaimed today willie o'ree i love you, man. i love you too.

right now on "america this morning," aviation catastrophe? airlines issue a warning about the impact they say 5g internet wireless service will have on travel. the new statement from the faa overnight as the clock ticks down to tomorrow's 5g rollout. happening right now, tensions with russia rising. the new troop movements raising concerns that vladimir putin could be preparing to invade ukraine and what the u.s. is doing about it. the developing story in the pacific. new images of that volcano disaster turning deadly. a woman swept out to sea trying to rescue her dogs. the challenge for aid organizations trying to reach