Begins now. Announcer from nbc news World Headquarters in new york, this is nbc nightly news with kate snow. After so many months of hardfought battles between Hillary Clinton and Bernie Sanders, tonight, voters in the u. S. Territory of puerto rico could be the ones to help push Hillary Clinton over the finish line and seal her position as the nominee for the democratic party. It hasnt happened yet, and for the moment, both sanders and clinton are still looking ahead to tuesdays primary in california, as donald trump continues to draw controversial today. We begin tonight with Kristen Welker on the road with Hillary Clinton in Northern California. Hi, kristen. Kate, good evening. Clinton Campaign Officials tell me tonight they feel confident about their chances in puerto rico. Most Democratic Candidates are fighting it out for delegaterich california, which votes next tuesday. All this as re growing increasingly concerned about their partys presumptive nominee. Reporter donald trump doubling down in his attack on california federal judge curiel, o overseeing the suit against trump university. Hes treated me a hostile manner and shotgun is going on. Reporter expanding his criticism to include religion. Telling cbs that a muslim judge might have trouble remaining neutral in a lawsuit against him, because of trumps call for a ban on muslims. Do you think they wouldnt be able to treat you fairly because of your policy . It could be, yes. Possibly. We dont judge people by who their parents are, a tradition in network. America. Im talking about unease. Reporter trumps unprecedented attacks on judge curiels ethnicity. Worst mistakes trump has made, and i think its inexcusablinexcusable. Reporter Mitch Mcconnell or men meet the press. Is it a racist statement . I dont agreeith what he had to say. Reporter tennessee senator, bob corker, floated as a possible trump running mate. I think hes going to have to change. Reporter meanwhile, Hillary Clinton and Bernie Sanders barn storming here in california. The final push for the biggest delegate prize. Both targeting trump. We are facing a republican nominee who wants to divide us. The American People will not vote for a candidate who insults mexicans and latinos. Reporter today, clinton called on sanders to start working with her if she clinches the nominee tuesday. After tuesday, im going to do everything i can to reach out to try to unify the democratic party, and i expect senator sanders to do the same. Reporter in puerto rico, democrats are picking a but some also spoke out about trump. It terrifies me. It absolutely does. He said some things that are not nice. Its the way he does it. A win here in california for clinton would give her a strong finish heading into the convention. For sanders, it would give him one more reason to stay in this race. There are already growing calls among democrats for him to work toward party unity to take on donald trump. Kate . Kristen welker in Northern California tonight. In southern california, firefighters are making progress in containing a wildfire in a suburb of los angeles, azores de as resident who evacuated make their way home. Steve patterson was along the fire lines. Reporter a battle on every front. The goal, hold the line, stifle any threat, keep residents safe. From the skies saturday, a fire spreading quickly. A dangerous, quickmoving fire. Reporter on the ground, helicopters. I walked out, and i could see the smoke and the fire coming by. It was hard to breathe. Reporter deputies urged residents to go, then grabbed hoses themselves in an attempt to stave off flames surging toward homes. Dubbed the old fire, the brush burner lit up more than 500 acres. Splitting off into neighborhoods, burning backya backyards, damaging homes, forcing nearly 5,000 people to evacuate. At this preschool, the fire burning just a few feet away. A resident said he could feel the heat. Crews told him it was time to go. There is a small fire in calabasas. A few minutes later, youre feeling it and smelling it. It got real very quickly. Very difficult and very dangerous. Reporter we climbed in with Los Angeles County fire captain, who took us behind the line where hundreds are working to contain the blaze. Have a lightened level of awareness. We need to make sure they know where the fire is and where it is potentially heading. What we have now is a hot spot, a flare up. What these guys are in place to do is make sure those dont catch or embers jump to create a new fire. Reporter as the sun fades behind the haze of another day, crews will continue working through the night. This fire, 75 contained. It leaves a good amount of real estate to burn, with crews battling against terrain they consider extreme. Behind me, a good example. We lost the end of steves signal there. Steve patterson in california. In texas, more evacuations and rescues today, as parts of the state continue to struggle with flooding, now blamed for 16 deaths. That includes nine soldiers who were swept away when their military truck flipped over in a creek. They have been identified. Gabe gutierrez has more from texa young. Ranging in age from 19 to 38. Private james from new jersey ran track in high school and joined rotc. Shes my baby. Reporter her mother is in agony. She had so much to live for. She should have never been out there. Reporter the nine soldiers were killed at fort hood thursday when their tactical vehicle, similar to this one, overturned in high water during a training exercise. Private eddie gates had been homecoming queen. Full eer wanted to follow in the footsteps of his mom and dad. He was really sweet, a nice kid, very responsible. Hell help you out if he could. I mean, he was just an absolute angel. Reporter cadet mitche mitche mitchell whiney was 21. I was waiting to see him in uniform when he came home. Hes coming home, but reporter the heartbreak comes as texas is still reeling from record floods. Something like this, i mean, it took out our whole community right here. Here in south texas, more mandatory evacuations are in effect, and water rescues are underway. You dont realize how bad it is until it happens to you. Reporter chambers lived in this home for 31 years. Its now under at least two feet of water. Even though it is miles from the river. Its unbelievable to see it. I just built my new shop. Totally underwater. This is and the rebuild is going to take quite some time. Weve lost a lot of stuff. Didnt have time to get it. Its just unbelievable. Reporter home after home in his neighborhood, inundated. Tonight, the loss in the Lone Star State is imme immeasurab immeasurable. Gabe gutierrez, engleton, texas. Lets get the latest on the floods, the heat and a new Tropical Storm taking aim at Raphael Miranda is following it all. Thankfully, the rain is winding down across texas. The same storm now bringing a Severe Weather threat across the northeast. Over 40 million americans dealing with Severe Weather right now. The major cities, new york city, philadelphia and d. C. Travel is a nightmare. Weve had damage reports out of baltimore already. The threat continues. Wind damage will be the primary threat, but we could see isolated tornadoes. Speaking of wind, we have Tropical Storm colin on the gulf of mexico. This is the earliest weve ever seen a c letter storm in the atlantic. Panhandle bracing for colin. You can see the Tropical Storm warnings already in effect. The green areas, those are flood watches. Were expecting very heavy rain. Five to eight inches in some spots. La la landfall, tomorrow night, a quick mover, near cedar key. The heat continues tomorrow, the west. Temperatures over 100 degrees. Catching a break in the middle of the week. Kate, back to you. Thanks so much. More tributes to muhammad ali today from those who knew the boxing great and those who admired him. Ali died in phoenix on friday night. His funeral will be held this coming friday in louisville, kentucky, his hometown. Ron mott is there tonight and has our report. Reporter homecoming. Late today, the body of mau huhammad ali arrived in louisvill as crowds arrived to say goodbye. Crowds streamed into the exhibit today, touring his greatest hits and offering memories. This father named his oldest boy for the legend. In africa, muhammad ali is a symbol for a black person. He served his purpose that was put forth for world, and he did it with grace, humility and just the utmost respect. Reporter the champ was part of sunday religious services. His brother worshipped in town, while the service at atlantas Famous Church included a flurry of alis accomplishments. The only thing greater than his punch inside the ring was his voice outside the ring. Reporter preparations for fridays public memorial continue. Opening with a 19mile funeral procession routed past locations organizers say were historically important to the fighter. Including his boyhood neighborhood. Its from these streets this backdrop shaped and colored alis world view. Former today show cohost Bryant Gumbel is going to deliver a eulogy. He had an amazing platform that he seemed intelligently to never misuse. Reporter about the buzzing outside the ali center, a s tree next to a sign bearing one of alis memorable catch phrases. Perhaps the truest reminder of a metaphor cal reality now passed. Faith was important to muhammad ali. Tonight, an inner Faith Service is being held in louisville to celebrate and honor his extraordinary life. Ron mott, thank you. Well have more of muhammad ali in his own words later in the broadcast. A Police Officer in memphis is dead after a string of shootings in that city last night. Police say it started with back to back shootings of three people in a popular downtown area. The suspect fled in a car but returned to the scene. Thats when they say his car hit smith, an 18year veteran of the police force. After a foot chase, officers arrested the suspect. He is now charged with first degree murder. A sad note to report from afghanistan. A photographer for npr was killed today while on assignment in an afghan translator was also killed. Npr said the men were traveling with an afterbegan ga Afghan Army Unit when they were struck by shell fire. He had covered war in afghanistan and iraq since the 9 11 attacks. He was the recipient of journalism and photography awards. Still ahead, we have heard about desperate families making sure they have a drug in the home that can reverse a heroin overdose. Now some are teaching their children how to use it to save a life. One day a rider made a decision. The decision to ride on and save money. He decided to save money by switching his motorcycle insurance to geico. Theres no shame in saving money. Ride on, ride proud. Dont let dust and allergies get and lifes beautiful moments. With flonase allergy relief, they wont. Most allergy pills only control one inflammatory substance. Flonase controls six. And six is greater than one. Flonase changes everything. Try duo fusion ing antacids . New, two in one heartburn relief. The antacid goes to work in seconds. And the acid reducer lasts up to 12 hours in one chewable tablet. Try new duo fusion. From the makers of zantac. I am a lot of things. I am her best friend. I am her ally. So i asked about adding oncedaily namenda xr to her Current Treatment for moderate to severe alzheimers. It works differently. When added to another alzheimers treatment, it may improve overall function and cognition. And may slow the worsening of symptoms for a while. Vo namenda xr doesnt change how the disease progresses. It shouldnt be taken by anyone allergic to memantine, or whos had a bad reaction to namenda xr or its ingredients. Before starting treatment, tell their doctor if they have, or ever had, a seizure disorder, difficulty passing urine, liver, kidney or bladder problems, and about medications theyre taking. Certain medications, changes in diet, or medical conditions may affect the amount of namenda xr in the body and may increase side effects. The most common side effects are headache, diarrhea, and dizziness. All my life, shes been there for me. Now i am giving back. And learn about a free trial offer at namendaxr. Com. Children as young as 9 have saved lived with cpr, and kids have been trained to use automatic defibrillators to bring people back from heart attacks. Now, as thousands of families across the country deal with heroin addiction, a stunning indication of how that epidemic is hitting home. Some children are being taught how to save someone from an overdose by administering the antido antidote. Gadi schwartz reports on the experience of one family in kentucky. Reporter at 9 years old, audrey is naturally protective. Shes protective of her dog, her family, a little sister, especially protective of her big brother sammy. Audrey gravitates toward him. Reporter while most kids are scared of needles, audrey practices reporter in case she has to save sammy from a heroin overdose. Its hard to hear a third grader decide what it looks like. Fingernails and lips would be blue, and they wouldnt wake up. Reporter or watch them practice giving the opioid reversal drug to stuffed animals. But like tens of thousands of families across the country, the possibility of an overdose is a grim reality. Injection complete. Reporter in the u. S. , someone dies roughly every 20 minutes from an accidental overdose. She did ask me the other day what does sober mean. Its a telling question, that she knows what tnaloxone is before knowing what sober is. Reporter sammy has been arrested, cut off and put through rehab again and again. One day, audrey her mother talk about naloxone training and how it could save sammy if he oded. She adores him. She does. Reporter audrey and jennifer give classes on administering naloxone. Its available without prescription in pharmacies across the country. Some described the use of naloxone as a safety net for addicts. Doctors say it doesnt produce a high. Is this enabling . Absolutely not. Dead people cant recover. Reporter heroin and opioids attach to receptors in the brain. Take too much, the person stops breathing. Naloxone clears the receptors, reversing the overdose. Sammy has been clean for a few months now, but his mother says they cant let their guard down. If a kid could save somebody, why not . Instead of having a nightmare watching somebody die. Reporter that means a little sister prepared to big brothers life. Gadi schwartz, nbc news, louisville, kentucky. In a moment, well go out for a test [000 19 09;00] i had so many thoughts once i left the hospital after a dvt blood clot. What about my wife. What were building together. And could this happen again . I was given warfarin in the hospital, but wondered, was this the best treatment for me . I spoke to my doctor and she told me about eliquis. Eliquis treats dvt and pe blood clots and reduces the risk of them happening again. Not only does eliquis treat dvt and pe blood clots. But eliquis also had significantly less major bleeding than the standard treatment. Knowing eliquis had both. Turned around my thinking. Dont stop eliquis unless you doctor tells you to. Eliquis can cause serious, and in rare cases, fatal bleeding. Dont take eliquis if you have an artificial heart valve or abnormal bleeding. If you had a spinal injection while on eliquis call your doctor right away if you have tingling, numbness, or muscle weakness. While taking eliquis, you may bruise more easily. For bleeding to stop. Seek immediate medical care for sudden signs of bleeding, like unusual bruising. Eliquis may increase your bleeding risk if you take certain medicines. Tell your doctor about all planned medical or dental procedures. Test test test t plan to stay for life. Test test test test test test test test test test test test those Driverless Cars weve been hearing so much about could soon be hitting the road. Cruising right alongside us in the next few years. But can they drive better than we can . Harry smith hit the road to find out. Reporter ready or not, theyre coming. Auto makers are in a race to get Driverless Cars on the road. Every single car company im in touch with has started it. Reporter croon started googles selfdriving car program. They dri two to three years or available . Theyre functional today. Theyll be in the marketplace in two to three years. Reporter google says only one minor crash has been caused by its selfdriving cars. The advantages of Autonomous Cars will be many. Silicon valley analyst Brad Templeton says driveless cars will save thousands of lives. Some people say the goal is to bring us down to zero fatalities. I say well get to negative because people will be created in cars when this Technology Comes around. The backseat of a 57 chevy, reimagined. The front seat. Reporter its hard for many of us to fathom not driving anymore. Theres a lot of old cars and motorcycles. Reporter we asked car guy jaylen kn leno, who has airplan hangars full of cars, what he thinks. I think it can solve any antilock brakes, we dont need these to stop a car. People fear whatever is new and different. If you said to someone, a car with no steering, no, i dont want it. But suppose a car has something you didnt see and stopped to avoid a kid you didnt see on a bicycle. Oh, id like that. Reporter thats what these cars will be able to do. Harry smith, burbank, california. Harry will have more tonight on assignment. A scary moment with drivers at the wheel at a drag race in New Hampshire this weekend. Take a look at this. Just moments after hitting the gas, one of the cars explodes, sending parts flying into the air. Amazingly, driver, jack beckman, walked away unhurt. Historic win for the worlds number one tennis player. Novak djokovic was the first player in a long time to consecutively win all four major titles. Beating andy murray to take the french open. Kelly cobiella tells us how he did it. Reporter its the title that world number one djokovic didnt have and desperately wanted. Battling childhood rival and world number two, andy murray, to get it. Djokovic struggled at first. Then this call. Murrays serve in by a hair. Djokovic fought it. The crowd booed it. It was the spark he needed. The serve found his game, hammering murray for the next three sets. Fighting for the final win. Djokovic becoming the first man in nearly 50 years toin four straight majors. Its an amazing moment. Im grateful for this moment. With the sun coming out after ten days, it is truly remarkable. Reporter today, nothing but love from djokovic. A heart of clay from the new king of the courts. Kelly cobiella, nbc. Learn from another champion. The late and great when my chronic pain got bad, my doctor prescribed medicationan opioid. Learn from another champion. The late and great it really helped but it came with some baggage opioidinduced constipationoic. Sooo awkward. You sound like youre ready for the movantalk opioids block pain signals. But they can also block activity in the bowel, causing constipation. Movantik can help reduce constipation caused by Opioid Pain Medications. Do not take movantik if you have a bowel blockage or a history of them. Serious side effects may include a tear in your stomach or intestine. And can also include symptoms of opioid withdrawal. Common side effects include stomach pain, diarrhea, nausea, gas, vomiting, and headache. Tell your doctor about any side effects and about medicines you take as movantik may interact with them causing side effects. Im so glad i had the movantalk with my doctor constipated by your prescription Opioid Pain Medication . Ask your doctor if movantik is right for you. With toothpaste or plain water. An their dentures and even though their dentures look clean, in reality theyre not. If a denture were to be put under a microscope, we can see all the bacteria that still exists on the denture, and that bacteria multiplies very rapidly. Thats why dentists recommend cleaning with polident everyday. Polidents unique micro clean formula works in just 3 minutes, killing 99. 99 of odor causing bacteria. For a cleaner, fresher, brighter denture every day. So we know how to cover almost almoanything. Hing, even a ufh2o. [man] thats not good. [pilot] thats not good. [man] thats really not good. [burke] it happened august fourteenth,2008, and we covered it. Talk to farmers. Finally tonight, a great deal has been said about muhammad ali since his death on friday night. Tonight, we want to share some of what ali said about himself. Specifically, how he wanted to be remembered. He wrote about it in his 2013 auto biography, the soul of a reflections on lifes journey. I would like to be remembered as a man who won the heavyweight title three times, was humor rowse and treated everyone right. A man who never looked down on those who looked up to him, and who helped as many people as he could. It is the heart that makes one great or small. As a man who stood up for his beliefs, no matter what. As a man who tried to unite all humankind through faith and love. Love for ones country, love for ones race, love for humanity. And if all that is too much, then i guess id settle for being remembered only as a great boxer who became a leader and a champion of his people. Thats one of the greatest of all time. This colorful, intelligent, this fast and witty. I wouldnt even mind if folks forgot how pretty i was. Words from the greatest. That is n brks krrnbc night lester holt will be in tomorrow. Im kate snow. Ill see you tomorrow on msnbc. From all of us at nbc news, have a great night. Goes on assignment. You think you saved a life . No. I think i did my job. Josh is on the front line of a whole new war on drugs. Just makes you want to give up all over again sometimes. Offenders here dont get handcuffed. They get help. You dont arrest them even though they have drugs on them which is illegal . Correct. I think the chiefs intentions are misguided here. Can it work . I just want to be sober. I sit down with the savvy young ceo of airbnb. This was the original crash pad