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-- captions by vitac -- www.vitac.com welcome back. you're watching the cnn news room. two teenage girls fighting for their lives after being gunned down in their high school cafeteria. we're live outside the hospital with an update on their conditions. plus, ebola fears causing two states to put in place new rules for anyone arriving from west african nations with ebola cases, but there's a new concern. the new rules could backfire. we'll explain. and danger behind the wheel. what you need to know to respond

to this massive air bag recall affecting millions of cars on the road. we begin in marysville, washington. a community in so much pain today after a school shooting. we learned today two 14-year-old girls being treated at one hospital are in critical condition. the chief medical officer said today the next few days are crucial and the families are asking for privacy as they try to come to grips with what is happening to their children. >> they're both very critical. we've seen tears, anger, they are just, just grieving. right now, i think they are just settled in. things are quiet. they know the circumstances. they're hoping for the best. >> two other victims are being treated at a second hospital. earlier today, that hospital said a 14-year-old boy is sill

still in serious condition and a 15-year-old boy is in critical condition there. witnesses say 14-year-old jaylen fryberg opened fire in his high school cafeteria yesterday morning. one girl was killed and fryberg shot and killed himself. susan candiotti is live in everett, washington, where the two 14-year-old girls are being treated. what more are you learning about the investigation, the condition of these kids? >> as this community tries to console each other and pull for these young people to recover, they're also trying to figure out what led to this shooting. and i was speaking with a student who's a junior who knew this freshman. said he was a very popular student and it turns out, they had a conversation friday morning at the start of the school day and it included talking about how this young man had recently returned from a suspension after he got involved with a fight with someone at a football practice according to witnesses, they had made some bullying comments toward him.

so, that's what this junior was telling me about. here's what he said. >> a moment just to kind of just to follow up on what was going on in his life. like i said, i wasn't, i haven't ever been that close to him, but i've spoken with him and talked to him like i do to other people like i see around school, i just told him, i said to talk to me, come talk to me if he ever needs anything and his final words he said to me about what had happened with the fight, he said it was an act of anger. there was an act of aggression and he should have used his words. those are the last words he had really spoken to me and it really hit me pretty hard. >> so, fred, again, the motive is unclear. authorities really aren't saying much about what they are finding out, but they spent much of friday and into the night collecting evidence at that school and speaking with witnesses. >> thanks so much.

and on the east coast, good news for a health worker quarantined in new jersey. she has tested negative for ebo ebola. she arrived yesterday and was quarantined when officials learned she had been treating ebola patients in west africa. she returned to the u.s. just as new guidelines were issued by officials ordering a 21-day mandatory quaurn teep for some travelers coming from the ebola hot zone. so, what will these quarantines mean for the general public? elizabeth cohen joining us now live. so, you've been talking to doctors who have been taking care of ebola patients overseas and they're not that excited about this. saying now they don't even want to go back because of the investment of time, dedicating care to the patients in west africa and then dedicating the time for this quarantine, so

what is this going to mean when it comes down to really attacking ebola at the source and it needs a global effort in which to do so. >> right, that's exactly the right phrase to use, fred. attacking ebola at the source. if you don't get rid of ebola in africa, you are not going to get rid of it in the united states. these doctors are questioning why christie and cuomo want this quarantine. when health care workers come back from west africa, if they're healthy, why should they be quarantined. that's three weeks they're not allowed to work, be with their family and the workers, doctors and nurses i've talked to said look, we're risking our lives, we're going for a month or so and then another three weeks that we can't make a living and we can't be with our family, that is a problem. the workers i've talked to said we're just not going to do it. so, if you don't quell the outbreak in africa, you can't

stop it here. >> it's interesting that new york and new jersey would target specifically health care workers because thomas eric duncan was not a health care worker. he came from liberia. went to dallas and we know his story from there. he ended up dying from e bbola d some health care workers contracted it from him. but that kind of policy wouldn't i guess, will not prevent any other travelers from protecting the general populous in new york b and new jersey. >> that's right. and it's important to know that dr. spencer, who's in the hospital behind me, we don't know that he got ebola from one of his patients. he was wearing protective gear. he was working for doctors without borders, that has an excellent track record of keeping their doctors and nurses safe. it is very possible to get ebola from someone else and there are lots of questions about how they're going to enforce this.

if you're not going to put a police officer outside every health care worker's door, how are you going to make sure they don't go outside? it's interesting. some experts have said there is another way to do this. you can for example, be more vigila vigilant. we know that dr. spencer we're told he felt fatigued and not well for a period of time. why wasn't someone having discussions with him at that time saying hey, if you're feeling slightly tired, don't leave your apartment. we're coming to visit you. ept to take care of this right away. there may be a middle ground here without going all the way to a quarantine. >> all right, elizabeth cohen right outside bellevue hospital. thanks so much in new york. and this just in to cnn. a tennessee middle schooler's death could be tied to the entero virus. metro national public school sent a letter to parents, it says there was concern this death could be from the virus. the health department let us

know that the child had a preliminary test suggesting entero virus or another respiratory virus. the health department has not received a confirmation yet because specific testing is spending, end quote. the cdc says 10 to 15 million people are infected with the virus each year in the u.s. still to come, were iraqi forces poisoned by a recent isis attack? we'll have details on the potential new twist in the terrorist group's battlefield tactics. at t-mobile you can hook up the whole family for $100 bucks. get 4 lines with unlimited talk and text and up to 10 gigabytes of 4g lte data. plus get the brand-new samsung galaxy note 4 for $0 down.

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isis battlefield tactics may have taken a more sinister turn. charges now that the radical extremist fighters launched a chlorine attack on forces not far from background. barbara starr has more. >> reporter: iraqi forces being rushed to medical care after possibly being hit by chlorine from isis forces 50 miles from background according to media reports, it happened last month. >> these allegations are extremely serious and we are seeking additional information in order to be able to determine whether or not we can confirm it. >> reports indicate the men were quickly released from the hospital. cnn has been unable to independently confirm the attack. chlorine by itself is not considered a chemical weapon, but it can be poisonous and can be delivered by an artillery shell. earlier this year, the u.s. and other countries concluded syrian

civilians were attacked by regime forces with chlorine and reports persist of other attacks. >> it's more of a defensive and psychological weapon than anything else. the effects of chemical to a soldier on the battlefield will cause them to do nothing but want to stop fighting and go for self-preservation. >> after almost three months of air strikes and 630 bombing runs over syria and iraq, optimism about the strategy working to degrade isis is tempered. >> the reality is that isil has controlled and still does control a significant amount of ground in iraq. >> u.s. military officials briefing reporters acknowledged it could be months before iraqi forces are ready to launch a major counteroffensive and years

before they can finally take back full control of the country. >> in order to launch an effective offensive operation, soldiers have to have trust in their commanders. that's not existent in most of the iraqi army now. >> and isis going back to tried and true tactics now laying roadside bombs in key areas where iraqi forces are trying to launch counterattacks. barbara starr, cnn, the pentagon. >> and still to come, nearly a million car owners have already been affected by the defective air bag recall, but is that just the beginning? and just how safe is your car? but first, our look into the future. today, a digital music and how it will change. here's richard quest with tomorrow transformed. ♪ >> half a century ago, we played a record, the family and friend.

fast forward a few decades to the era of cartridges and cassettes and we're hitting stop in the digital decade. >> we have the whole history of recorded music. 13 million times or more on these services, so you can instantly access on any device. >> today, mp 3s and online file sharing changed the face of music. apple i-tunes is the number one music retailer in the world and spot spotify subscribers can stream and share without buying a thing. offers an online -- for a small fee. ♪ fans of the singer ben montague helped him fund his latest album, pushing them to their friends on social media. ♪ looking ahead to the future, the

industry's skipping ahead with technology. >> when speak to your car an say i want to hear cold play, you can just play it instantly. i think that's something that a lot of people will really value and i think it's going to be about improving the quality of the experience. it's fantastic having 13 million songs available for you to play, but you want to be able to share them better with your friends.

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a defective air bag recall has affected a million car owners in the u.s., but that could be just the beginning. some are saying it could end up being the biggest recall in history and could take years to fix. >> fred, more cars could be recalled over exploding air bags that shoot metal sharp nell at passengers. now, right now, the focus is vehicles in states with warm, humid climates, but the pressure is on to expand the recall on nationwide. in the meantime, federal pross are looking into whether

japanese air bag manufacturer -- was truthful and what it knew about the defects. lawmakers are questioning if the government agency that handles recalls is doing enough to keep drivers and passengers safe. if you remember, this week, the national highway traffic safety administration, they put out an urgent warning to nearly 8 million car owners to immediately get these defective air bags replaced. some manufactured by tacada, they expand so fast that the metal inflater ruptures. it sends metal flying. that could cause serious injury or death. 4.5 million vehicles were affected, but later corrected that. it's nearly 8 million. a senior administration official says a review is underway to make sure a mistake like that doesn't happen again and the agency's safety culture is also under review with a focus on its risk management procedures. should n its a acted with

urgency to recall these cars sooner. fred? >> thank you so much. next, a story about a man who hasn't let a crisis slow him down. he's an architect who lost his sight. how he's still creating buildings today. >> on a friday, i was at work. on saturday, i was out riding my bike. on monday, i went in for surgery. on wednesday, i was blind. >> after building a successful career as an architect, 40-year-old chris downie was diagnosed with a brain tumor. >> i was told it was more involved, more complicated, but it went well. the next time i woke up the next day, my sight was tastarting to fail, so i was rushed back to icu and the next time i woke up, it was all gone. >> in fact, b before doctors could tell him he was officially blind, a social worker had already stopped by. >> noticed i was an architect and said we can talk about

career alternatives. i was just shocked, so i immediately started thinking about the work that i do and how much of it was sort of immediately possible. >> a can do attitude coupled with some new tools including a special embossing printer and wax sticks. >> especially as you work with them, they get warm, it's wax. it gets kind of tacky and it sticks to the paper. >> has helped downie become one of the world's few blind architects with a special sense for designing for the disabled. >> if i'm doing a project for people with disabilities, it's about ability, about keeping everybody moving. enabling as many people to function to their fullest capacity possible. >> dr. sanjay gupta, cnn reporting. [ male announcer ] this is the cat that drank the milk... [ meows ]

...and let in the dog that woke the man who drove to the control room [ woman ] driverless mode engaged. find parking space. [ woman ] parking space found. [ male announcer ] ...that secured the data that directed the turbines that powered the farm that made the milk that went to the store that reminded the man to buy the milk that was poured by the girl who loved the cat. [ meows ] the internet of everything is changing everything. cisco. tomorrow starts here. the internet of everything is changing everything.

and sometimes i struggle to sleep at night,nd. and stay awake during the day. this is called non-24, a circadian rhythm disorder that affects up to 70 percent of people who are totally blind. talk to your doctor about your symptoms and learn more by calling 844-824-2424. or visit your24info.com. don't let non-24 get in the way of your pursuit of happiness.

welcome back. here's a look at some other top

stories. in sacramento, a gunman and his accomplice are in custody today after a shooting rampage that left two sheriff's deputies dead. police say the suspect shot and killed danny oliver after he approached the gunman's car following reports of a suspicious vehicle. suspects tried to carjack two cars. police say the pair shot and killed a second deputy before finally being apprehended. and a tragic end to the search for missing university of virginia student, hannah graham. officials confirmed that human remains belong to the 18-year-old. she was last seen in september. police are now trying to build a case against a prime suspect, jesse matthew. and a scathing new report ks the university of north carolina of carrying out the biggest academic fraud scandal in college sports history. the investigation concluded that for 18 years, the university kept thousands of students, many

of them athletes, eligible to play by letting them take fake classes. four employees have been fired. and thanks for spending part of your saturday with us. cnn money starts right now. >> october was off to a spooky start. investors fears eased. this is cnn "money." exploding air bag, federal regulators urging car owners to get them replaced and it's not just one automaker's problem. a 15-second video of a holographic baby elephant has the internet losing its mind and later, the 28-year-old who sold his blogging site to yahoo! for a a billion dollars. how he keeps control of his invention and what it's like the work with