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don dahler reports now on the chaotic moments. >> shots fired. they came in short tense bursts.ges from first responders, struggling to make sense of the senseless. >> the flashes in the middle of mandalay bay north side. >> reporter: as police made their way towards the sorts of the gunfire. they encountered the injured and dead. >> we have multiple, multiple victims shots fired right at the medical tent. >> with hundreds of rounds slamming into buildings and human's. one officer's voice brought their main task. >> we can't worry about victims. we need to stop the shooter before we have more victims. >> reporter: during the terrifying minutes. the radio calls are narrative of confusion. >> getting from civilians they may have been three shooters. and mayhem. and professionalism. >> we believe it's the northernmost room on either side. >> reporter: it was a moment they trained for. and after an explosive breach. >> reporter: the s.w.a.t. team burst into the room. the violence was over. >> there is one down inside the room. >> suspect down. multiple firearms. >> reporter: many of

here is don dahler. steven paddock was able to pour hundred of round into the crowd below because of these devices, bump fire stocks which are legal. but senator dianne feinstein wants to ban. you have to stand up. you have to say enough is enough. >> reporter: with some republicans open to a hearing it may have a chance. but recent efforts after mass shootings like in las vegas, have met fierce opposition. back in 2013, after 20 children and seven adults were massacred by a person with a semiautomatic rifle, senator feinstein proposed a law against those weapons. congress voted it down. in fact, despite an average of one mass shooting of four or more people each day since sandy hook. there has been no major shift in the nation's gun laws. director of john hopkins university center for gun policy and research. >> people say maybe this will be the one that affect change. yet it doesn't. why? >> i think the gun lobby has been very effective in promoting the, overall idea that, any regulation is a violation

dnthony, presumably to defend themselves. >> mason: don dahler, thank you, don.ple killed here last night were simply enjoying a beautiful fall evening, just living fun, listening to some of their favorite country artists. heey were mothers, fathers, sons, and daughters, sonny melton was a hero. the tennessee nurse died melton was a protecting his wife from the bullets. she says she felt him get shot in the back. charleston hartfield was a las vegas police officer and military vet, a friend called him one of the nicest guys ever. rachael parker worked for the police department in manhattan beach, california. she was a civilian employee on the department's front desk. omsa romero was a mother and grandmother who worked as a high school secretary in gallup, new mexico. a southern california p.t.a. says susan smith was a wonderful woman, an advocate for children and a friend. angie gomez was a riverside, california cheerleader. her gofundme page has already surpassed its goal. they and the rest of the victims will be missed. now let's go to jeff glor in new york. >>

don dahler shows us why the dairy industry is not so sure. good morning. >> good morning.s pure cow's milk. it has noed a tifbs and it's not lactose-free. the difference is the type of protein found in the milk and the makers say the difference can be life-changing. four years ago lisa said her grandson nicholas stopped drinking milk after he was hit with severe stomach pain. >> the symptoms went away when he stopped drinking milk. >> reporter: when he saw a commerial for a2 milk he told his grandmother. >> i got it for him and he has no problems when he drinks it. >> reporter: blake waltrip is the chief executive of a2 milk in the u.s. >> there's a1 and a2. we find the cows that produce a2 proteins a and that's what we use to make our milk. more than likely everything we sees feels the intolerance is to the a1 protein, not the lactose. >> they think they're lactose intolerant, but they have a problem with the a1 protein. >> that's correct. >> when a1 proteins are broken down in the gut, they form a fragment bc7 that causes inflammation and bloating, caution abdominal pain

thank you, don dahler. >>> he managed to slip an arsenal into his room without suspicions.rock 'n' roll was all he knew how to do. ahead his biographer is in studio 57 with a look at the magic of petty's songs. you're watching "cbs this morning." t the magic. start the interview with a firm handshake. ay,no! don't do that! try head & shoulders instant relief. it cools on contact, and also keeps you 100% flake free. try head & shoulders instant relief. for cooling relief in a snap. i have no idea how we're going to get through this. follow me. unitedhealthcare has the people and tools to help guide you through the confusion. well that wasn't so bad at all. that's how we like it. unitedhealthcare. >>> welcome back to "cbs this morning." here in las vegas. we are still with lots of unanswered questions and healing ahead. the man who led boston police during the marathon bombing calls the las vegas attack law enforcement's worst fear realized. former police commissioner ed davis told cbs radio station wbz to stop something like this from a high vantage point is very difficult t

thank you for watching. >>> welcome to the "overnight news," i'm don dahler.ifornia. incinerating entire neighborhoods and sending tens of thousands fleeing for their lives. about, two dozen major fires are burning out of control. they have destroyed more than 5,000 homes and businesses and killed at least three dozen people. hundreds more are missing amid the ashes. carter evans begins our coverage. >> reporter: amid another day of burning homes and towering flames, the fire chief did not mince words. >> this is a serious, critical, catastrophic event. this dash-cam video from a sonoma county patrol car, a deputy driving through the flames. that hellish view is what california highway patrol paramedic whitney lowe saw from the sky. he air lifted 44 people to safety. but one man refused to leave his elderly parents. i have five kids and a wife. same decision i would have made. hope i never have to make the decision. out on the front lines of one of the worst wildfires california has seen. >> this is not a backfire is it >> no, head of the fire creeping down on