Disability showdown. This man, suing more than 100 Small Business owners for alleged violations of the disabilities act. But is he getting rich off being disabled . Tonight, the Business Owners fighting back. Good evening. Thanks for joining us on this sunday. Im tom llamas. We begin with breaking news from texas, a deadly brawl between rival gangs, escalating to a fierce gun battle. At least nine people of dead. It ended in this parking lot. You can see the motorcycles still parked there. You can see the police tape crisscrossing the area. Aditi roy has the latebreaking details. Reporter tonight, gunfire erupts in broad daylight at a waco, texas, restaurant, killing nine people and injuring several others. 15 others. I just got a call from a passer bye, they were going to twin peaks they shot they heard a gunshot. Reporter police say the shots rang out shortly after noon. When rival motorcycle gangs got into an argument inside the restaurant that quickly spilled into the parking lot and escalated into a gun fight. Witnesses tell kxxv they hid in a restaurant freezer during the shooting. The parking lot swarming with Law Enforcement officials, shutting down the Shopping Center and warning people to stay out of the area as local hospitals tweet the wounded. Tonight they made several arrests from the gun fight. Aditi roy, abc news. More than two dozen tornadoes reported this weekend. More than two dozen tornados reported. Take a look at this one. A monster tornado blowing across the highway in oklahoma. This home and garage destroyed. Two classic cars below the rubble as well. Look at this town in missouri evacuated tonight. Rob marciano with the latebreaking details. Reporter a night of violent storms bringing torrential rain and rescues. What youre watching live right now is this man and this woman are in this home surrounded by water. Reporter including this one in johnson county, texas unfolding, on live tv. First responders using a drone to send a rescue line to a stranded couple. Then paddling toward them in a rescue raft. Homeowner bill kastel, thats him you see standing right there, talking to dallas station wfaa. Trying to figure out how to get the boat over here. Reporter the sound of Rushing Water and debris waking them up. My wife got out of bed, looked out the window, said, oh my god. The waters under our house reporter that current, too swift. A National Guard helicopter called in lifting them to safety. Flooding causing problems all the way to missouri. Residents urged to evacuate outside of kansas city. This after a tornado outbreak overnight. 30 reported from texas to minnesota. Our team tracking the storm to oklahoma. You can hear the sirens going off here in chickasha. You can see over those trees a rain wrapped tornado. Trite there, heading northeast. In kansas, the storm blowing this 34car Freight Train off the tracks. Oh jesus reporter back in oklahoma, softballsized hail destroying this windshield. The system leafing a trail of damage in its wake. Today, residents east of tulsa facing the cleanup ahead. And as soon as we hit the floor, in the hallway, the whole house started shaking. Reporter megan wilson describing huddling in this house, as a tornado tore through. Destroying their garage. She and her mother grateful to be alive. We lived. We lived through it. Reporter the rain has stopped in texas at least for now. Behind me you see the red river, which looks very read in part because its got so much water in there. The flood stage continuing to rise cresting on monday. And this is the second tornado outbreak in as many weeks. Is this unusual . Its a busy time of year, but we had a very quiet start for this year. Were kind of making up for last start. All in all, were about where we should be year to date for tornadoes. And there is a possibility see some tonight although the risk is somewhat diminished. Minnesota, parts of the western great lakes, youre under the gun for severe weather. As far as rain go, flash flood watches for parts of arkansas. The bulk of it showers. Thunderstorms, and heavier rain across east texas and much of the southeast. Rob, thank you so much. Now to philadelphia, where Amtrak Service is set to return tomorrow, nearly a week after the accident that took eight lives. And tonight a new clue from the ntsb. Heres phillip mena. Reporter tonight, the mystery surrounding the derailment of amtrak 188 is deepening. The ntsbs lead investigator telling Abcs George Stephanopoulos on this week that there is no emergency transmission evidence that the engineer brandon bastion alerted dispatch about any projectiles. We heard no communications at all from the amtrak engineer to the dispatch center to say that something had struck his train. Reporter sumwalts remarks coming just two days after he said that three separate trains, including amtrak 188, appeared to have been struck by projectiles. All in the same area in philadelphia. And all within minutes of tuesdays derailment that killed eight people and injured hundreds. There is a radio call from a local commuter train about its windshield being shattered. Transit 1, let those personnel know that that train was shot at, so use caution. Reporter the engineer for that train, also of interest to federal investigators. The lead investigator also stressing the need for the Safety Technology known as positive train control, which they say would have prevented the crash. Positive train control automatically stops a speeding train, and despite the vast rail system, has only been fully implemented for passenger trains in a handful of places, though its mandated nationwide by the end of this year. We have seen countless accidents over the years that could have been prevented had positive train control been implemented. Reporter and tonight, that investigator also calling for cameras inside the cab. Because had those camera been on board, tom, wed have a much better idea about what happened that night. Many people want those cameras inside airplane cockpits at well. Thank you very much. Speaking of planes. Scare scares usually involve dangerous landings, but tonight, a Computer Security expert says he hacked into a plane and briefly made it fly sideways. The fbi is now investigating and we asked, our passenger planes now at risk . Heres kendis gibson. Reporter tonight, the fbi investigating a frightening possibility. A hacker attack on more than a dozen flights across the country. The troubling claims outlined in a newly released fbi affidavit, claiming denver Computer Security experts Chris Roberts told investigators he not only infiltrated Inflight Entertainment system on planes 15 to 20 times but at one point he caused one of the airplane engines to climb, resulting in a lateral orside sideways movement of the plane. Airplane engines causing it to climb. Resulting in a lateral or sideways movement of the plane. The affidavit saying roberts told investigators as a passenger, he broke into the planes Inflight Entertainment systems through boxes under seats. Its something thats a possibility. Its something the government has said is a problem. Reporter in february and last month, roberts, traveling on united from denver, tweeting about the airplanes system that caused the fbi to be alarmed. After landing in syracuse, fbi agents immediately meeting him at the airport. Seizing more than a dozen electronic items. The affidavit saying agents later found the seat electronic box on that plane showed signs of tampering in the location where roberts had been seated. Roberts declined to speak with abc news today, but spoke to fox after last month about hacking into planes wifi. It is definitely difficult. It takes a lot of work. It takes a lot of research and you have to be on quite a number of flights. Reporter federal sources tell abc they believe it is extremely unlikely that someone could hack a planes control system while in the air. Tonight, roberts tweeting, over the last five years, my only interest has been to improve airport security. Now, the fbi is hoping to scrub through all of his electronics to see how close he really got. If he can, there are plenty of other people that would have reason to damage or bring down an airplane. Reporter tonight United Airlines telling us roberts claims ununfounded. Ken dis, thank you. S s. And a plane killing a family of four. You can see the tail. It then burst into flames. Workers rushed to the rescue. All passengers died on impact just a few miles from their home s. And one day after a successful raid that took down a leader of terror groups oil and gas leader is a major setback in iraq. Iraqi troops desserting the city. The people left behind victims of torture and execution many pleading for their lives. And to washington, d. C. , a new clue in the mystery of a burning mansion in which four people died. Police releasing this video of a person of interest running behind the building, wearing a hoody. You can see him there. Were learning new details about the last night of the family that lived in the home. Heres gloria riviera. Reporter tonight, investigators are asking for the publics help in solving a chilling crime that ended in this massive d. C. House fire on thursday. Inside, the bodies of wealthy businessman savvas savopoulous, his wife amy and its also believed their youngest child and a longtime housekeeper. Injuries discovered, appeared to be blunt force. Or sharp or sharp object injuries. Reporter overnight police releasing this surveillance video. Authorities want to know if that person has any connection to the familys 2008 porsche found torched and abandoned in maryland. Residents in this upscale neighborhood reported nothing out of the ordinary recently. But in a voicemail given to police and obtained by abc news, mr. Savopoulos describes wednesday night. Amy is in bed sick tonight. Reporter the housekeeper, he says on the message, will help overnight but her phone died. She doesnt have her charger and i dont have a charger that fits her phone. Reporter he asks for help letting the housekeepers family know she wont be coming home that night. On thursday morning, a woman who says she also worked for the family tells abc amy sent her an unusual text to stay home. Police say they are investigating this as a homicide, not a murder suicide. Also they say that fire intentionally set and no sign of forced entry. Tom . Gloria, thank you. And next, to an eyepopping bus accident. Take a look at this. A ka seen know bus dangling from a binge after an accident at dawn sunday morning. Only the driver was on board thankfully. The Fire Department managed to get i him out without sending that bus tumbling over. Still not clear exactly how the accident happened. On this weekend filled with graduations, one High School Student and his extraordinary choice. He was accepted to every Ivy League College and five other top schools. But he chose the university of alabama and some say thats how smart he really is. Bazi kanani has the story. Reporter Ronald Nelson is senior class president. Near perfect standardized test scores. And, oh yeah thats him conducting his high school band. So its not surprising that his College Acceptance letters are piled high. What is surprising . I decided to go to school at the university of alabama. Reporter the 17yearold from germantown, tennessee, rejecting all eight ivy league schools. Instead, accepting a full ride to join the crimson tide. I really wanted to make the right decision that would benefit both me and my family. Reporter nelson says the ivies did offer some Financial Assistance but he and his parents still would have been stretched to pay the rest. With plans to go to graduate school nelson decided that brandname degree really isnt worth it, yet. I think ill get just as good of an experience. Reporter while some have questioned his decision, nelsons parents, teachers, and advisors are all in support. After all, he has made some pretty good choices in his life so far. Bazi kanani, abc news, washington. And we did the math tonight. He may have saved his parents up to 250,000. Still ahead, this man is making hundreds of thousands of dollars suing businesses. Over what he claims disability violations. Tonight well tell you why some of them are fighting back and what undercover cameras showed him doing and later, the raging fire people trapped inside. What they had to do to survive . Well show you the video, next. You total your brand new car. Nobodys hurt,but there will still be pain. It comes when your Insurance Company says theyll only pay threequarters of what it takes to replace it. What are you supposed to do, drive threequarters of a car . Now if you had Liberty Mutual new car replacement, youd get your whole car back. I guess they dont want you driving around on three wheels. Smart. With Liberty Mutual new car replacement, well replace the full value of your car. See Car Insurance in a whole new light. Liberty mutual insurance. Anyone have occasional constipation diarrhea, gas, bloating . Yes one Phillips Colon Health probiotic cap each day helps defend against these occasional digestive issues. With 3 types of good bacteria. Live the regular life. Phillips 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. Welcome back, a disability showdown. One man with a shawl group of lawsuits. Over Business Owners many paid out. Others fighting back. Heres mara schiavocampo. Reporter though seen at a dog show jogging, kneeling, and twirling with a huge dog, veteran carl barnum iii says hes disabled and has sued more than a hundred Small Business owners for allegedly violating the americans with disabilities act. People like commercial landlord zack hovav, hit with a 21,000 suit for alleged violations at one of his buildings. I would fight so he doesnt get a penny from me. Reporter but, barnum does get plenty of change from others, settling most cases. Our los angeles station kabc estimating that has brought him roughly 360,000. Critics calling him a professional plaintiff. Kabc reporter marc brown catching up with him at his southern california. Reporter do you make your living suing people . I would suggest you talk to my attorney. Reporter so what is barnums disability . According to the veterans administration, he is 40 disabled, 10 due to a knee injury. The rest . Ringing in the ears, sinusitis, and athletes foot. The lawsuit lists additional disabilities. Still, most businesses settle. Until now. Several owners, including hovav, fighting back and winning. One judge finding barnum did not meet his burden of proof on the issue of disability. Barnums lawyer says that dog show left him in pain for weeks, and tonight telling us barnum is simply an enforcer working for the good of the disabled community. Mara schiavocampo, abc news, new york. Thank you. We thank mara and mark brown for his report. Coming up, on a mission this weekend where beyonce turned up, and heads were turning. Our instant index is next. I have type 2 diabetes. I started with pills. And now i take a longacting insulin at night. I take mine in the morning. I was trying to eat right, stay active. But i wasnt reaching my a1c goal anymore. Man my doctor says diabetes changes over time. It gets harder to control blood sugar spikes after i eat and get to goal. My doctor added novolog® at mealtime for additional control. Now i know. Novolog® is a fastacting, injectable insulin and it works together with my longacting insulin. Proven effective. The mealtime insulin doctors prescribe most. Available in flexpen®. Vo novolog® is used to control high blood sugar in adults and children with diabetes. Take novolog® as directed. Eat a meal within 5 to 10 minutes after injection. Check your blood sugar levels. Do not take novolog® if your blood sugar is too low or youre allergic to any of its ingredients. Tell your doctor about all medical conditions and medicines you take. Ask your doctor about alcohol use, operating machinery, or driving. The most common side effect is low blood sugar. Symptoms may include dizziness, sweating, confusion, and headache. Severe low blood sugar can be lifethreatening. Other common side effects include low potassium in your blood and injection site reactions. Get medical help right away if you experience trouble with breathing serious allergic reactions like swelling of your face tongue, or throat, sweating, extreme drowsiness dizziness, or confusion. Now i know about novolog®. Taken by millions since 2001. Vo ask your Health Care Provider about adding novolog®. It can help provide the additional control you may need. One of the foots favorite rituals happens at the waters edge. Here, they must look their best. Smooth, Beautiful Skin is an advantage. The others can only hide in shame. Introducing the new dr. Scholls dreamwalk express pedi. Back now with our index, starting with a dangerous act of bravery. Check this out. A raging fire in alabama, those inside the building had no choice but to jump. You saw someone jump right there. And they did. And a Police Officer that raced was there to catch them. Officer Danny Eubanks rescued four people. He said his natural instinct kicked in. And these endangered turtles spent the winter recovering after they nearly died of hype thoughthermia on cape cod. But a human crowd turned out as they were released back into the sea. And a star sighting