To walk down the isle again just a year after they first said i do. Nightly news begins now. Announcer from nbc news World Headquarters in new york this is nbc nightly news, reporting tonight erica hill. Good evening. In less than 24 hours, the size of one of the largest wildfires burning in california the rocky fire has more than doubled. 73 square miles scorched. Two dozen homes are gone. More than 12,000 residents told to evacuate. Dry conditions and shifting winds are not helping the nearly 2,000 firefighters now battling just this one immense blaze, which is still 5 contained. Of course it is not the only fire burning tonight. Across the state, more than 20 major fires continue to spread. Nbcs guy schwartz is in clear lake california for us tonight. Good evening. Reporter erica, good evening. This is a pastmoving fire that is incredibly inpredictable inpredictable. You can see the smoke billowing over the ridge and fire crews preparing to hold their lines. From the sign and bring it to me. Reporter fighting fire with fire early this morning firefighters taking advantage of a change in the winds to burn a stretch along a california highway on their own terms. This is highway 20. You can see the fires burning and that dry brush is the major concern. The concern is that the embers from this dry brush will fly across and hit the dry brush over here this whole area is tinder. For hours to create a fire break. Its important to create a buffer where fire crews cannot get in so if we create a large buffer between this road and the fire front, then we accomplished our goal. Reporter but this massive fire remains unpredictable. Last night enormous flames landscapes, the fire doubling in size since yesterday scorching 20,000 more acres in just five hours and its threatening more than 6,000 structures. Sarah workman is one of the 12,000 people forced to evacuate. Finally smoking us out, and we got to get out of here. Reporter fires spreading through the west. Now 21 major fires burning in california alone. 8500 firefighters on the front lines facing dangerous conditions and the drought is changing how these fires behave. All the vegetation you see around us all the way from our very light grass to our very thick vegetation is very very dry all the way down to the core and thats why it makes fire conditions very dangerous and very extreme. Reporter on thursday fire captain david rule was killed while scouting another fire. Once you get in there and the fire heats up just right, no there is no escape route. We got to be careful. Reporter to make matters worse, lightning strikes are setting off new fires daily. Veteran firefighters out there, 30 plus year firefighters that have never seen fire behavior like this. Its beyond extreme. Reporter stretching resources even further as more fires burn out of control. Fire crews say it is extremely difficult to get ahead of the fire because of the changing winds. They say it is spreading in all Different Directions and right now this fire has burned an area almost the size of cleveland. Erica . Perspective perspective, thank you. In tennessee a manhunt is underway in the shooting death of a Memphis Police officer. Police have one man in custody but the search for the alleged kill there continues. We get details from carry sanders. Reporter a routine traffic stop turned deadly for Memphis Police officer sean bolton. Heard bang bang bang bang. Reporter the 33yearold officer was shot repeatedly and despite a bulletproof vest, pronounced dead at the hospital. The first call for help came on patrolman boltons police radio from a by stander. Please please hurry up. They actually picked up the police radio and spoke into it and got the police to come out because all the of the neighbors on that side were trying to call 911, but they couldnt get through. Reporter the first cop on scene frantically called for help. There was a traffic stop and he was armed. The subject bailed out. It was a traffic stop. Checking you are advising that the officer is down or the suspect . Can you call an ambulance . Ambulance is already in route. Reporter witness reports there may have been more than one person in the car and the gunman may have been in the front passenger seat. The only description on suspect will be two male blacks last seen running westbound on summer view. Reporter police broke down the door to an apartment complex and took one man into custody but the trigger man remains at large. This is the second Police Officer in tennessee killed in the line of duty just this year. Nationwide 70 officers have been killed this year doing their jobs. There is a theme do black lives matter . And at the end of the day, we have to ask ourselves, do all lives matter . This again evidences the fact that there are so many guns on our streets in the wrong hands. Reporter officer bolton had no dashcam ra or body camera when she was shot. That equipment is budgeted for next year an iraq war vet, a Police Officer in memphis for almost five years gunned down in the very city where he grew up. Carry sanders, nbc news. Turning to politics the results of our new nbc news wall street journal poll are out tonight. Four days before the first prime time debate among the republicans. Only ten of the 17 gop candidates will take the stage in prime time in ohio not surprisingly donald trump makes the cut. Chuck todd has been looking at the numbers, chuck . Erica, there is a lot of new stories in our new poll. Lets look at the republican results. Two things jump out at he number one obviously is donald trump rocketing to the top of the polls. The last time we had him in the poll before he announced was at 1 and leads at 19 and by the way, for those of you that think the trump candidate si is about tea parties or angry white guys, its not about that. His support is across the board across the spectrum. This really is hes consolidating the anti political establishment vote that doesnt have an ideal center. Who is in and who is out . Who finished in the top ten . Guess what . We have three people who died for ninth. Rick perry, Chris Christie and john kasich. One will get left out. According to the our kak calculations that one will be rick perry. Its something to watch by tuesday, erica. Thats what we will do. Chuck todd tonight, thanks. As the republicans jockey for position heading into thursdays debate, there is renewed focus on the democratic ticket tonight with the possibility of Vice President joe biden entering the race. Kristen welker is at the white house with more for us. Good evening. Reporter erica, good evening. Democratic sources say the Vice President is personally torn. Hes getting pressure to run from some democrats who dont think Hillary Clinton can go the distance but getting in now would mean playing political catchup. Hes been a fixture at the president eastsides side. Could joe biden be eyeing the top spot. Biden has been having meetings at his washington residence to explore the idea of taking on hilary in iowa and new hampshire. People close to biden are starting to have conversations about what a campaign might look like. Reporter its no secret biden had been thinking about a run but those aspirations were put on hold when his son beau died in may from a brain tumor at age 46. He might be the inspiration for his father to take the another look. Beau enduringed his father to run. He still said i think you should run. Reporter challenges may be significant. Some key advisors are working with clinton. Shes captured big party donors and has a strong lead in polls among democrats. He shouldnt run. If he was going to run, he should have started a year ago to consome consolidate support. All the biden donors have went to Hillary Clinton already. Reporter at times hes been criticized for getting too up close and personal. Hes run for president twice before and campaigns with stumbles and gaps. You cannot go to the a 7 eleven or Dunkin Donuts unless you have a slight indian accent. Im not kidding. Reporter questions about clintons emails and transparency eroded her trust. 51 unfavorable rating is high compared to bidens 39 and biden has been in this game a long time. Joe biden was elected to the senate when he was 29 years old and hes been a rising star in the party since. This man is wanted to be president his entire life so its not surprising that he would be thinking about whether or not he wants to the make a run in 2016. Reporter the Vice President s press secretary downplayed the speculation saying hes focused on his family and immersing himself in work. Biden is expected to make a final decision at the end of summer. Erica . Thanks. A tragic scene in russia today. It happened by a squad of helicopters. One started spinning out of control losing altitude and crash into a field erupting in a fire ball. One of the pilots was killed, the other did survive. Officials say the hydraulic system failed. The discovery of a wing part that may be from that missing malaysia jetliner set off an intense search for other objects that might also have come from the plane. We get more tonight from nbcs bill neely who remains on reunion island bill . Reporter good evening, erica, from a dramatic coastline, the search for debris has widened from this the island today. The authorities from malaysia where mh 370 began the doomed flight asked everyone in this part of the ocean to look out for aircraft debris. Thats an alert to search more than 4,000 miles of coastline. Here today people have been handing in objects they found on beaches. Police came to one where they were giving a small object they put in a metal box. There were reports of a door being found. One item was found to be a normal ladder. Malaysia search experts saying none of these objects is related to the missing plane. As i discovered, the beaches here are littered with metal and rusting junk. Police are taking in what people find but so far the only relevant find are that piece of aircraft debris and a suitcase found nearby. Both are now in france. The aircraft part, wing flab from a boeing 777 wont be examined until wednesday. The suitcase is at another lab where they will try to match it to the dna of the missing passengers and crew. Well here there is quite a storm. The ocean very rough. People here hoping that might throw more aircraft debris on to these beaches. Erica . Bill neely tonight. Bill thank you. Another american hunter is accused of illegally killing a lion in zembobway. Reporter cecil may be the most famous lion to die at the Trophy Hunter but wasnt the first. Wildlife officials accused a second american pennsylvania doctor and bow hunter jan sesky of killing another lion back in april saying his guide hunted without a quota and permit. The guide was arrested and Officials Say hes cooperating. Hes a cancer doctor in pittsburgh. Today at his home one answered. Nbc news has not been able to reach him for comment. Meanwhile, the death of cecil and the fate of his pride gripped the world. Last night his image lit up the Empire State Building a report his alibied jerico seen on the left also had been killed spread across special media. This morning researcher brent went looking for jerico and snapped this picture tweeting he is alive and well. Researchers believe hell take over the pride now that cecil is gone. Things will be hard for him but hes a mature lion. Hes 11 years old himself and been through all sorts of fights and experienced lion. So i think they got quite a good chance. Reporter the zimbabwe government suspended the hunting practice no more bows and stopped all big game hunting around the park where cecil roamed. Hunting of lions, leopards and elephant in areas has been suspended with immediate effect. Reporter while the government is seeking to extradite the dentist, its unclear whether they will demand the same of dr. Sesky. When nightly news continues on this sunday what happens when things dont work out between humans and robots . Well tell you a congratulations. Youre down with crestor. Yes when diet and exercise arent enough, adding crestor lowers bad cholesterol up to 55 . Crestor is not for people with Liver Disease or women who are nursing, pregnant, or may become pregnant. Tell your doctor all medicines you take. Call your doctor if you have muscle pain or weakness, feel unusually tired have loss of appetite, upper belly pain, dark urine or yellowing of skin or eyes. These could be signs of serious side effects. Im down with crestor make your move. Ask your doctor about crestor. To folks out there whose diabetic nerve pain. Shoots and burns its way into your day, i hear you. To everyone with this pain that makes ordinary tasks extraordinarily painful, i hear you. Make sure your doctor hears you too i hear you because i was there when my dad suffered with diabetic nerve pain. If you have diabetes and burning, shooting pain in your feet or hands, dont suffer in silence step on up and ask your doctor about diabetic nerve pain. Tell em cedric sent you. Unbelievable toenail fungus . Seriously . Smash it with Jublia Jublia is a prescription medicine proven to treat toenail fungus. Use jublia as instructed by your doctor. Look at the footwork most common side effects include ingrown toenail, application site redness, itching, swelling burning or stinging, blisters, and pain. Smash it make the call and ask your doctor if jublia is right for you. New larger size now available. Get fastacting, longlasting relief from heartburn with it neutralizes stomach acid and is the only product that forms a protective barrier that helps keep stomach acid in the stomach where it belongs. For fastacting, longlasting relief. Try gaviscon®. In the quest to better understand how man and machine can relate. A social experiment sent a robot on the road. They hoped it would make its way across the country with human help until the plan hit a snag. Reporter unlike other robots designed to help people. He talked again to me. Reporter hitch both bot mission was so see how many people would help it. In a huge test of humankindness, this immobile kidsized robot counted on strangers to get around. Its like Walking Around with a celebrity. I think the opportunity for people to actually engage unsupervised you know with this kind of technology was really part of the charm of it. Reporter beginning in canada where it was created, hitchbot spent 26 days hitchhiking and 18 days in the neither lands and ten days in germany and grabbed a cold beer. Two weeks ago hi irkshitchbo the t hit hiked across america. Start income most within hopes strangers would take it to times square, mount rush more and the grand canyon. Hitch bot did well until arriving in philadelphia where it got no love from someone in the city of brotherly love. After two weeks in the u. S. The journey ended ended. Of 46,000 followers, one tweeted im sorry your trip was cut short in philly. Another, poor innocent hitchbot. I didnt expect to happen so many people happy to root for hitchbo the t and talk about it. Thats wonderful. Reporter today the grand social experiment has ended but in it perhaps a lesson for all of us. The final message, my trip must come to an end for now but my love for humans will never fade. Rehema ellis, nbc news new york. 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If you cant afford your medication, astrazeneca may be able to help. Formost of us memories of the wedding day are the most cherished but what if they were suddenly gone . Kate snow on one couple determined to recreate their special day. Reporter one year ago yesterday they had the picture perfect wedding. Just one problem, the bride doesnt remember a thing about it. 19 days after her wedding day, she was in a terrible car accident. Weeks later, she realized she lost about five weeks of memories leading up to the crash. I dont remember the wedding. I dont remember getting married to you. I looked down at the ring and was like something is up. You had no memory of the wedding . No. The ceremony . Like a nightmare, like somebody telling you a bad dream. Jeremy was heart broken but decided right then and there he had to find a way to throw his wife good wetting. If she wasnt happy, i wouldnt be happy so why not create another memory. So this weekend they started over with the help of total strangers that donated to an online funding site and their small Virginia Community who pitched in from hair to tuxedos, flowers to photography. What made you stop . The love for his wife and he would take the time to create Something Like this for his wife really spoke to me. The carriage entrance was a surprise arranged by the groom. So many details exactly the the same. Consider this as the best gift that jeremy could give to you, the gift of giving you your wedding day back. Reporter they repeated their vows with a nod to last year. Like i said the first time anything that happens, nothing ever will tear us apart. The minister making this new ceremony all about the bride. And now justice, you may kiss your man. [ laughter ] reporter for jeremy and justice, it was a Second Chance to say i do and recreate a memory to have and to hold for the rest of their lives. Kate snow nbc news virginia. Thats nbc nightly news for this sunday. I get this. I was at my shop tied up with a customer when i realized the time. I had to get to the bank before it closed, so i made a break for it. When i got out it was almost closing time. Traffic was bad. I knew i was cutting it close. But it was ok. I use td bank. Its got the longest hours and stays open an extra ten minutes every day. Im sid. And i bank human at td bank. howie americas got talent is ten years old. Wow. [dramatic inspirational music] absolutely brilliant. At last howard this is the only venue for all these variety acts. Where do they get a forum like this . That was awesome this is amazing howie this is more than 1 million. This is a dream. [vocalizing] these are peoples lives. This is every waking minute of their day. mel b we see everything any anything. Its what keeps people coming back to watch it season in, season out