And, america strong. The new images tonight from the top of the world. Can you guess our person of the week . Good evening. As we come on tonight, just as millions begin their memorial day weekend, were tracking several dangerous storm systems. Record breaking rain and deadly flooding sweeping family members away across the south. Just a short time ago, a Tropical Storm warning in effect. A new system brewing in the atlantic, heading towards the east coast. The map shows the possible track of this over the holiday weekend. And across the south, the relentless rain. Near waco, this car catching fire in the middle of the flash floods. Dozens of rescues. And a police car dash cam in kentucky capturing this. Just an incredible moment, the lightning across several states. Millions at risk at this hour. More on the possible Tropical Storm brewing in a moment. But first, lets go to phillip mena, with the frantic rescues captured on video. Reporter tonight, Severe Weather turning deadly in texas. This chopper in Travis County searching for two people trapped in their vehicle feared swept away by fastmoving flood waters. At least three missing and two dead across the state, and dozens of rescues. In conroe, Good Samaritans using a ladder to rescue a woman stuck in her van, holding on to each other to keep from getting washed away themselves. Carrying her to safety. I just want to say, thank you so much. They really did save my life. I could have drowned. Reporter cattle struggling in neck deep water in waller county. Flash flooding is expected to begin shortly. Reporter this piano landing on a car showing the power of those waters. In kentucky, Sheriffs Office dash cams capturing a lightning bolt striking a home in paducah. At least 16 tornadoes reported overnight. More than 100 reported tornadoes across ten states just this week. David, were in brenham, texas. A recordbreaking 16 inches of rain falling in under 12 hours. Just look what it did to this road. And more rain is expected through the holiday weekend. David . Phillip, thank you. Lets get right to rob marciano, live here from manhattan. Rob . Good afternoon, david. Were looking at more flooding tonight, and Severe Weather. Take a look at the map. Huge severe thunderstorm watch. Oklahoma and kansas, along the i35 corridor. And the radar lit up across southeast texas. Flash flood warnings east of houston. And more rain coming tonight. The other big weather story, newly formed tropical depression two. About 400 miles off the carolina coastline. They think it will become Tropical Storm bonnie. And make landfall across the carolina coastline. Lets time it out. 8 00 p. M. Tomorrow, rainy and breezy in charleston through myrtle beach. Drifting inland on sunday. Not the best beach weather for the carolinas. Some of this moisture will sneak up to the east by monday. Certainly getting an early start for the Hurricane Season this holiday weekend. David . Well track it straight through the weekend. Rob, thank you. In the meantime we turn next to the race for the white house. Donald trump and the giant crowd of protesters today. This from the rally in san diego just moments ago. Several protesters clashing with police. Police pushing them back with clubs. Theyre trying to avoid a repeat of the clashes outside a trump rally in albuquerque earlier this week. Also tonight, why is trump pulling his offer to debate Bernie Sanders off the table . How he explains his change of heart. And sanders tonight firing back. Heres tom llamas in san diego. Reporter tonight, a political tremor hitting southern california. Donald trump and the protesters who hate him shaking san diego. This is one of the larger protests. You can see hundreds of demonstrators. They have the trump pinata, the tag says racist. Were about 20 miles from the border with mexico. The people here are upset against trumps immigration policies. California, ground zero for antitrump demonstrations. In burlingame, trump forced to get out of his motorcade and jump down a walkway. In fresno today, his police motorcade busting through a barricade, racing past protesters. But tonight, trump not backing away from a key position his supporters love, but many here find toxic. We will build a wall, and who is going to pay for that wall . Mexico. 100 . Reporter but trump is backing away from something else, and now refusing to debate senator Bernie Sanders. The showdown, first proposed on jimmy kimmel live. If i debated him, we would have such high ratings. Reporter trump then setting conditions. I would want a lot of money to be put up for charity. Reporter sanders telling kabc hes ready. I think the American People want to really hear a debate from two people whose views could not be further apart. Reporter and trump, just hours ago, sounding primed for battle. And i want to debate him so badly. I would love to debate bernie. Reporter but then tonight, trump pulling out with this statement, it seems inappropriate that i would debate the second place finisher. I will wait to debate the first place finisher, probably crooked hillary clinton, or whoever it may be. Tonight, from sanders, frustration. Trump goes around and hes a bully, hes a big tough guy. Well, mr. Trump, what are you afraid of . Tom llamas joins us live. Any word from the Trump Campaign about the other reasons theyve changed their mind . So much talk about the 10 million to debate sanders going to charity. Now it seems like its off the table. Reporter thats right. Trump now shaking hands. He just wrapped up a lengthy speech and he did not mention the debate with Bernie Sanders once. From his statement, he did say he wanted to debate Bernie Sanders because he said it would be an easy payday. But tonight, trump is pulling out. David . Tom, thank you. Next this evening to the travel nightmare in parts of the country at this hour. The Memorial Day Travel crush is on. 34 million americans are expected to take to the roads this weekend alone. Drivers in new jersey, sitting in bumper to bumper traffic, as they try to get away. Gio benitez is in the traffic tonight, with the new apps helping so many of us, including waze. As we ask, how many drivers are actually offering those tips . Warning of accidents and police up ahead. Reporter tonight, with gas prices at their lowest in over a decade, we could be seeing a Record Number of drivers on the road. So weve been trying to get to our shoot location, and i just want to show you, look at all of this traffic getting out of new york. But the savings can be big. Lets say youre a family of four driving from atlanta to orlando this weekend. Thats 440 miles, about 44 for gas each way. Five years ago, a round trip would cost you 60 more. Heres one way to save time and money with the free traffic app waze, which warns about everything from construction to cars stopped on the shoulder. So how often are you using waze . All the time. Reporter it just makes things faster for you . A lot faster. Reporter the app can track your traffic data simply by having it open, comparing your speed to the speed limit. Just this april, users here in new york city alone also submitted nearly 3 million traffic alerts. David, waze tells us the best day to leave is tomorrow, and monday afternoon is the worst time to come home. David . Gio benitez, our thanks to you for braving the traffic. Travelers taking to the air as well. Millions expected at the nations airports this weekend. Coming amid outrage at the tsa over the long security lines. Authorities promised to take action late this week, but did it work . Heres david kerley. Reporter after two weeks of some suffering through threehour lines, thousands of missed flights. Even travelers on cots. Tonight, it wasnt a nightmare. In atlanta, lines thinned, in chicago, waits stretched to just half an hour. With additional officers, k9 units, and a focus on the top 20 airports by a new tsa command center, seemed to be working. Will that be the same story as we hit record travel levels . Is this just a summer of misery . I dont think it will be a summer of misery. I think it will be a summer with a lot of travel. Reporter the top man at the tsas best advice, sign up for a trusted traveler program. Sign up for a precheck and know what you can and cannot carry on. And the my tsa app will soon have official postings of how long the wait is at the airport youre headed to. So all those travelers heading out, seems like the system worked. But they all have to come home sunday or monday. And the recommendation remains, david, get to the airport early. All right. But enjoy the weekend in the meantime. Thanks, david. We move on to other news this evening. A fire aboard a korean air jet, triggering an emergency evacuation. Flames shot out of the engine as the plane was taxiing for takeoff in tokyo. More than 300 passengers escaped down the slides. Fortunately, no major injuries, but you can see them gathered there along the tarmac. The cause of fire is not known. Next to a deadly and chaotic confrontation between a Police Officer and a driver. Now under investigation. It started with a traffic stop. A surveillance camera catching the moment. The driver pulling away, and the officer firing his weapon. Jumping on the hood of the car at some point. Steve osunsami with what happens next, and investigators now asking, was it justified . Reporter heres the Surveillance Video from a nearby gas station that Florida Police are studying tonight. Look again, the driver who ends up getting shot by the trooper is behind the wheel of this dark nissan that rams into the car in front of him. You then see florida Highway Patrol officer miseal diaz pull up in his motorcycle and stand in front of the dark car, ordering the driver to stop. That doesnt happen, and the trooper ends up on the hood, firing through the windshield as the car throws him off. If he felt that his life was threatened and the vehicles going to run you over, that is assault with a deadly weapon. As you can see, hes doing his job. It goes to show you that our job is a dangerous job. Reporter 24yearold doll pierrelouis is dying, and continues driving with his girlfriend in the passenger seat until they crash into this dark suv. The girlfriend is hospitalized with a broken ankle. Tonight, her family is blaming the officer. All im asking is why you jumped on the hood. Reporter the family of the young man killed explains that he was driving without a valid license. There are no charges against the patrolman. David . Steve, thanks. Next to president obamas historic and solemn visit to hiroshima, japan. Laying a wreath at the memorial there. He did not apologize for the atomic bomb that the u. S. Dropped to end world war ii. But he did honor the dead. And called for an end to nuclear war. Jim avila is traveling with the president. Reporter today in hiroshima, history made with every step. President obama walking where seven decades of american president s would not. 71 years ago, on a bright, cloudless morning, death fell from the sky and the world was changed. Reporter 1945. A flash, a burst of fire and a mushroom cloud. 80,000 People Killed instantly. Today, near the only building still standing, the american president refusing to apologize. But listening intently as survivors told their stories. This man dissolving into tears. Obama calls what happened here a lesson for the modern world. The scientific revolution that led to the splitting of an atom requires a moral revolution as well. Reporter his message written in the memorial book, let us now find the courage together to spread peace and pursue a World Without nuclear weapons. David, president obama now heading home after his historymaking visits to japan and vietnam. Both former enemies, now strategic friends. David . Jim, thank you. Next tonight to your health and the debate over cell phones and cancer, now reignited. A major government study of brain and heart tumors in male rats that had been exposed to radio frequencies like those from cell phones. Heres eva pilgrim. Reporter tonight, a new government study reigniting the old debate over whether cell phones could cause cancer. Researchers exposed rats to high doses of cell phone radiation nine hours a day through their entire lives, about six times the amount of radiation an average person gets during a cell phone call. The early findings show a slight increase in cancerous tumors in the brains and hearts of male rats, but curiously not the females. I think its important as a Public Health issue to at least try to answer that question to give people guidance as to how they can change or not change their behavior. Reporter no human studies have ever proven a conclusive link between cell phones and cancer. Im always aware, its always next to me. I mean, its probably something, but i dont care. In all honesty, i need my cell phone. Reporter many of us keep our phones close by all day long, even when we sleep. Its not so difficult to put your phone a few feet away from you when you sleep. Reporter the fda says if you are worried, cut down on cell phone use and go with handsfree options. David, the cell phone industry tells us they are reviewing this new research. But point out that since cell phone use has grown over the past few decades, the rate of brain cancer in this country has remained stable. David . Eva, thank you. Theres still much more ahead on world news tonight this friday. The breaking headline involving Actor Johnny Depp and his estranged wife. The allegations the actor is now facing. The pictures amber heard submitted as evidence. What a judge ordered late today. Thats coming up. And the holiday hiker, and a deadly bee attack. Over 1,000 bee stings. What rescuers encountered when they got there. And an important report about a hidden danger in your backyard. The one item so many use with their grills that could pose a terrible risk to you and your family. Some important tips, right after the break. Have a higher risk of stroke due to afib, a type of irregular heartbeat not caused by a heart valve problem. But what i wont accept is getting out there with less than my best. So if i can go for Something Better than warfarin, i will. Eliquis. Eliquis reduced the risk of stroke better than warfarin, plus it had significantly less major bleeding than warfarin. Eliquis had both. That really mattered to me. Dont stop taking eliquis unless your doctor tells you to, as stopping increases your risk of having a stroke. Eliquis can cause serious and in rare cases fatal bleeding. Dont take eliquis if you have an artificial heart valve or abnormal bleeding. While taking eliquis, you may bruise more easily. And it may take longer than usual for any 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. I accept i dont have to set records. But im still going for my personal best. And for eliquis. Reduced risk of stroke plus less major bleeding. Ask your doctor if switching to eliquis is right for you. With usaa is awesome. 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I felt a really sharp pain, a stabbing pain. Reporter a bite of a burger sent Cheryl Harrison to emergency surgery. Could have been definitely lifethreatening. Reporter both taken down by hardtospot dangerous wire bristles that come loose from brushes used to clean barbecues getting lodged in food. So tiny, and hard to detect, even on xrays pretty violent, and it hurt really bad. Reporter tristan beck had to have surgery so doctors could find and remove it. Suddenly, i saw a glint of light off a piece of metal. My colleague, who was operating with me, said that looks like a bristle, a brush bristle. Reporter in a new study, researchers estimate that wire bristle mishaps sent 1,700 people to the emergency room since 2002. About 130 people each year. Experts recommend that you use a newer brush, even using pliers to make sure the bristles dont come out too easily. Then wipe down the grill before you cook. Keeping you at the holiday barbecue and out of the emergency room. Clayton sandell, abc news, los angeles. Clayton, thanks. When we come back, the best beaches in america. The new list is out tonight. Any guesses . And breaking developments involving johnny depp. What a judge has now ordered. And, america strong. A very special message from the top of the world. Who is our person of the week . L. Forming a clot. Which can travel to the brain and cause a stroke. Pradaxa was better than warfarin at reducing stroke risk in a study. In the rare event of an emergency, pradaxa has a specific reversal treatment to help you clot normally again. Pradaxa is not for people who have had a heart valve replacement. Dont stop taking pradaxa without talking to your doctor. Stopping increases your risk of stroke or blood clots. Ask your doctor if you need to stop pradaxa before any planned medical or dental procedure. Pradaxa can cause serious, and sometimes, fatal bleeding. Dont take pradaxa if you have abnormal bleeding. And seek immediate medical care for unexpected signs of bleeding, like unusual bruising. Pradaxa may increase your bleeding risk if youre 75 or older, have kidney problems, stomach ulcers, a bleeding condition, or ta