A transformer erupting into a fireball. You could see the fire roll up from the sides of the building. T plrt its. Rs sent running for the battle royal. A british tabloid pushing back after the duke and duchess of sussex file a lawsuit with meghans dad now revealing why he went public with his daughters very personal letter. And survival tale. The dog trapped under rubble from Hurricane Dorian pulled out alive weeks later. How he has survived is a miracle. How he was spotted in the massive destruction. All right. I kind of want that dog. What a story that is. How cute. Rob marciano has that story coming up. Good morning, happy sunday. Just to be clear our show is only one hour today. Were now on for two hours on saturdays. But until further notice sundayo pack into this one hour. Were covering the latest on the fastmoving impeachment story. President trump taking to twitter defending hims ing th impeachment of a member of his party . And that is coming up. But we want a shooting at a kansas city bar overnight leaving four people dead. Others rushed to the hospital. Abcs Stephanie Ramos is here with the very latest. Stephanie, good morning. Orr wh. This is all unfolding as we speak. Investigators are currently on the scene. Authorities are searching for a suspect. They say agents with the atf are also joining the investigation. The search is on for a killer after police say a man walked into a kansas city bar overnight and opened fire. At least nine people were shot. Four of them killed. We went inside. We found four hispanic males that had been shot and were deceased. Outside we located five more victims who were all transported to local hospitals. Reporter First Responders racing to save the injured who were rushed to the hospital. All are in stable condition. Police say the chaos unfolded just after 1 00 a. M. At the tequila kc bar. Located at tenth and central. Investigators are now interviewing witnesses and searching for any Surveillance Video. Again, guys, no one is in custody at this time. Well be following this throughout the day. Stephanie ramos, thank you. We want to bring in abc news consultant and exfbi special agent brad garrett. Good morning, brad. Good morning. This investigation is just starting. The police are waiting to get into the bar. No suspect as you heard stephanie mention in custody. What are police doing to i. D. The shooter . Two things. One, interviewing the people that survived, were in or near the bar. The second is to pull all the Surveillance Video in the bar, outside the bar and the surrounding streets. Because obviously the shooter either arrived in a car or he walked. Historically shooters dont flee the scene of Mass Shootings like this. What does this tell investigators about this particular shooter . Maybe a different motive. If you look at Mass Shootings across the board, a large percentage either shoot themselves or the police shoot them. Nikolas cruz at parkland was an example of somebody who did plea the scene. Well have to see what his motive is. But clearly in shooting and then escaped. So maybe a whole different mindset potentially as to what drove him to commit the shooting. Brad garrett, thank you this morning from washington this morning. The impeachment battle not taking the weekend off. President trump firing off a series of angry tweets attacking both the democrats and a prominent member of his own party. Matt dodd is standing by with analysis. But were going to begin our coverage here with abcs david wright who is right there at the white house. David, good morning to you. Reporter good morning, dan. We begin with some news. Abc news confirmed the existence of a second whistleblower prepared to corroborate the story of the first whistleblower. That persons lawyer tells abc news that this second whistleblower has direct knowledge of some of the allegations contained in the complaint. The complaint which, of course, touched off this impeachment inquiry. The existence of a second whi with direct knowledge of the president is significant because it challenges one of the main assertions trump has repeatedly made in his own defense. If you look at the whis complaint is totally inaccurate because the conversation i had is absolutely perfect and most people who read it say the same thing. The whistleblower never saw the conversation. Reporter the lawyer representing both whistleblowers tells abc news his new client was interviewed by Inspector GeneralMichael Atkinson who followed up on the initial complaint. Atkinson told house investigators last week the second whistleblowers story corroborated key details. Thats one of the reasons the initiaet mmentebu the president continues to lash out at his critics. This weekend that includes a member of his own party. Calling mitt romney pomp mouse with a capital including this, he is a fool who is playing right into the hands of the donothing democrats. Impeachmittromney. Romneys offense, calling trump out for this comment thursday. China should start an investigation into the bidens. Reporter romney had tweeted, the president s brazen and unprecedented appeal to china and to ukraine to investigate joe biden is wrong and appalling. Hes the first republican senator to criticize trumps conduct directly. Last night Susan Collins of maine cautiously joined romney. Collins, who faces a tough reelection fight, called the president s appeal to china completely inappropriate, but wouldnt say whether trump was out of line pressuring ukraine to investigate the bidens. Members of congress in both parties have been lying low during this recess trying to see which way the wind blows but now theyre being pushed to take a stand. Democrats want to exploit the fact that many republicans are reluctant to criticize the president. They hope to use that in their effort to retake the senate. Meanwhile, the white house is pushing for a full house vote on impeachment in part to force democrats running in trumpfriendly districts to go on the record supporting impeachment, dan. It is very tricky bring in matthew dowd. Some wavering republicans may think i dont want to go through what mitt is going through. It has been his strategy all along any time anybody goes against him, i saw where mitt romneys response to this attack, this trick or tweet by the president was sending out a picture of him and his wife and his grandkids in a Pumpkin Patch in the course of this. I think the problem donald trump has with this, if the house impeaches, it goes to the senate and mitt romney literally is a juror in the senate to decide his fate. And my thought is always you dont attack the jurors in such a way. Theyre going to make the decision on your case. Lets talk about secretary of state mike pompeo. We saw him speaking a little bit in David Wrights piece there and he came out yesterday and said essentially, yes, the president did request that the leader of the ukraine investigate joe biden, but it wasnt about politics. We dont care about biden so much. Its about fighting corruption. Lets take a listen to what he said. We know exactly what we were doing there. We were trying to create a situation where it wouldnt be a corrupt government. Right . We wanted to make sure that they didnt interfere in our election for 2016. We wanted to make sure that if we underwrote javelin missile systems, something that the Previous Administration refused to do, we wanted to make sure that we werehis with a government that was straight up. Theyre saying its about corruption, not politics. Do you buy that . No. I mean, it strains total credibility on this. First they asked the president if hes ever wanted to investigate anybody else other than his political opponent. He said well have to look into that. Ill have to get back to you on that. And keep in mind one thing, dan, the president s Campaign Chairman is a convicted felon. The president s vice chairman is a convicted felon. His head of the nsc is a convicted felon. And his lawyer was a convicted felon, so if he really wanted to attack corruption, you would think he would start it in his own camp. If you look at the five thirty eight polling arm, average, the president s Approval Rating hasnt gone down that much in the wake of the ukraine story. Is there a way in which being attacked by his base could this help him with his base . The fascinating thing about donald trump since Inauguration Day is his job approval has been exceedingly stable. It doesnt rise very much or doesnt fall very much. Stays around 40 . Improving economy, it doesnt go up. When all these controversies hit him, it doesnt go down. He has a very stable level opp carries into 2020. The democrats need to be careful about that because its solid and stable support throughout. Matth dodd, great to have you on a saturday on a saturday and sunday this morning. Great to be here. Thanks again. Tune in to this week later on. George stephanopoulos is going to speak with two of the house leaders deeply embroiled in this impeachment battle. Democratic Hakeem Jeffries and republican jim jordan. Plus, the powerhouse roundtable of which matthew dowd is a part will discuss impeach and the 2020 race all coming up on this week later this morning on abc. Whit, over to you. We want to turn to breaking news overnight. Oktoberfest celebrations turning into chaos when a transformer blew sending a fireball into the sky. Abcs Kayna Whitworth joins us from huntington beach, california, with more. Kayna, good morning. Reporter hey, whit, good morning. So you can see behind me workers are trying to actually replace that trants former that explodes shooting some 70 feet into the air during the oktoberfest that was happening right here. Now, i spoke with these Festival Hall owners. They said they had to evacuate some thousand people and it was really the quick thinking of the Restaurant Owner that saved them. Overnight a california oktoberfest celebration rocked by an apparent transformer explosion, sending that massive fireball into the sky in huntington beach. You could see the fire roll up from the sides of the building. We could feel the heat of the flame like on our foreheads. Reporter festivalgoers say they saw multiple explosions. And people started running. That man pulled me out of the booth. And then thats where the final explosion was. Reporter the owner of the Festival Hall alerted people to a strange smell and immediately started evacuating people. His sister speaking exclusively with Good Morning America. Your brother escorts the Fire Department down to look at the transformer. And thats when the explosion happened. Because the minute he went to go open the door and said its right over here and turned right when that happened, that first explosion hit him. He caught on fire. Reporter the first calls coming in just after 8 00 p. M. Local time. Officials rushing to the scene. [ sirens ] affirmative. We have several of our crew members burned. Give me five ambulances for now. Reporter pat brassis was at the festival describing to gma the shear moment of panic. Throughout the chaos as people were running by and the security guards were screaming at people to get towards the nearest exit, so i just grabbed my fiancees hand. We started heading out the door of the event center. Thats when the second explosion happened. Reporter officials now investigating what caused that underground electrical vault to explode. They were guided to an underground vault by a security guard. When they went to open to access to see whats going on, one explosion. Electrical fires, vault explosions, they create a lot of energy. Theres a lot of energy potential, a lot of heat. Reporter this really could have been so much worse so right now the Restaurant Owner is in the hospital with second and third degree burns. Thats to his torso and his head. He was taken to the hospital along with two other civilians and two firefighters. And, eva, right now power is still out to this entire area. Lucky it wasnt a lot worse. Kayna whitworth for us there. Well now to the latest on the campaign trail. Democrat Bernie Sanders says he looks forward to getting back to work following a hospital stay for a heart attack. Abcs rachel scott joins us from washington with more on the questions on how this could affect his run for president. Good morning, rachel. Reporter good morning, eva. Yes, senator Bernie Sanders still sidelined from the campaign trail, but on the road to recovery this morning. He says hes feeling great and is just very happy to be back home. The senator now out of the hospital after suffering from a heart attack. His family giving him a warm welcome as he arrived back home in vermont. But it was at a Campaign Event in las vegas on tuesday where sanders started complaining of chest pain. He was hospitalized. And doctors performed an emergency heart surgery inserting two stents to clear up a blocked artie. The Sanders Campaign is looking to push past this. The senator will be on the stage for the next democratic debate on october 15th. And his campaign has already resumed a milln dollar advertising push in iowa. Sanders is the oldest candidate in the race at 78 years old. And i can tell you, i have caught up with the senator on the campaign trail. He often packs a lot into the day. Its unclear at this point if that pace can continue when he returns back to the trail. Dan. That is a big question. Rachel, thank you. Really appreciate it. Were going to turn now to some horrifying Surveillance Video released by police in san diego. It shows a mother allegedly threatening to blow up a church and pointing a gun at parishioners while holding her baby. The video shows anna conkey clutching her 10monthold son with one arm and holding a gun in the other while shouting threats during Easter Sunday mass last april. Churchgoers tackled the mom, safely taking the baby and then holding the woman until police arrived. Conkey has pleaded not guilty to several charges including child abuse and making criminal threats. In maine a man and three children have gone missing off the coast of kennebunkport. The four of them were reportedly aboard a 14foot boat yesterday morning and were seen wearing life jackets. The u. S. Coast guard receiving a mayday call from that boat in which the man describes what is happening. Mayday, mayday, children are in the water now and i got to bail out. And were just all going to huddle together and im going to try to get us back on the top of the jon boat. The jon boat is flipped over at this time. Terrifying call there. The u. S. Coast guard and crews from nearby towns spent saturday searching for those boaters. Now to a tragic Development Following the trial of a former Dallas Police officer convicted of murdering her neighbor. A man who lived across the hall from the victim and testified at the trial was shot dead. Abcs Kaylee Hartung is here with this story. Good morning to you, kaylee. Reporter good morning, eva. So much emotion ran through the courtroom during Amber Guygers trial. Joshua brown, he testified through tears describing what he heard of the confrontation and the gunshots that killed his neighbor. Now police are searching to find his killer and anyone who witnessed it. Be advised that this looks like we have one on the ground. Reporter this morning, investigators searching for the gunman who killed a key witness in the trial of former Dallas Police officer amber guyger who was convicted last week of murdering her neighbor botham. Anthen a double tap after that. I looked outside and we saw the victim right there laying down and that was it. Reporter 27yearold joshua brown gunned down in this dallas parking lot. Mr. Brown, please have a seat. Reporter just days ago, brown provided critical testimony for the prosecution during guygers trial getting emotional at times as he remembered his neighbor jean. The accountant was killed while he washiayn ig arshaps e t tm thought jean was an intruder. I thought it was my apartment. I thought it was my apartment. Do you recall ever hearing someone saying, hey, put your hands up in a loud tone . No. No, maam. Or show me your hands . No, maam. Looks like it was a silver sedan that looks like it was fleeing from the locate. Reporter Dallas Police now focus on finding browns killer in a Community Already reeling in the aftermath of botham jeans death. Guyger was sentenced wednesday to ten years in prison. Its well short of the maximum 99 years that she could have received. An attorney for botham jeans family now saying brown deserves the same justice that he sought to ensure the jean family. D not this point. Kaylee, thank you. Really appreciate it. Were going to switch gears now and check the forecast. For that our friend robert is here. Whats going on, man . Glad to be back. Eva youre a legend down there in gator oh, yeah, right. Florida gators winning over auburn. It was a stressful game and it was homecoming. They needed to win. Big deal. Good to be back. I want to share some video. Its that time of year. We want to show the fall foliage. The aspens are aglow there. We speed it up and here are the aspens all aglow there in telluride, colorado. It wont be long before the lifts will be running with some white on the ground and well be shredding the gnar as we like to say. Little bit of snow expected in the mountains of Northern Rockies perhaps, not like we had last week. This front pushing towards the east. This is going to throw up some rain and some showers, rumbles of thunder as well from missouri up through pittsburgh later on today and then slowly make its way towards the east. This will impact some of the commutes during the Morning Hours tomorrow and in t