32 to 45 years old as deputies remain in critical condition. Police say this is no longer an active shooter scenario, but this e remains an active scene. Thank you. Lets get a little more on this investigation and what were learning about the shoot perp we turned to pete williams. What have you found out . Law enforcement Officials Say they are checking whether others were involved. Some say they believe this gunman who fired the shots acted alone. They are still running down leads and have taken two people in for questioning. They thought at least two others were involved in the attack, but theres been no confirmation of that. One question tonight is who made the 911 call . It was someone who innocently reported seeing a man with a gun or was it someone hoping to lure them there for an ambush. As for the man Authorities Say fired the shots is 29yearold gavin eugene long of kansas city, missouri. Officials say he just turned 29 today. This was his birthday. Police are in the process of searching his house in missouri tonight. Some say u they are also looking at whether he was associated in the past with an antigovernment movement. Its followers genuinely believe that local police have no authority. But why baton rouge is the big question tonight. Pete williams, thank you. Its under this shadow of violence at home and abroad that the Repulican National Convention kicks off in cleveland tomorrow. Its layered and robust. But the head of the Police Union Says it may not be enough and called on the governor to take extraordinary steps to keep people from legally carrying weapons on the streets during the convention. Stephanie gosk has that. Reporter on the eve of the convention p the news out of baton rouge spread fast. The second deadly u Police Shooting in as many weeks. The head of clevelands police union is calling on the governor for a state of emergency and temporarily suspend the open carry law. Leadership needs to do something to protect the men and women of the police department. Reporter in the Public Square open carry was on display. One gun owner hoped to make point with his rifle. This is to make people aware that there are good people out here. Reporter officials said they were altering the security plan following the killing of five officers in dallas. Not only do we have to keep the delegates and obviously the candidates safe, but everybody who wears a badge now is a a target. Reporter the shooting today is just the late nest a string of incidents in the last year that has shaped clevelands security plan. Including multiple violent protests at trump rallierallies. And just a few days ago the attack in nice, france. The secret service is in charge here koord naughting 5,500 total Law Enforcement including Police Officers from as far away as california. 2500 interlocking security fences stretch more than three and a half miles with concrete barricades and cement trucks block iing off streets. The fbi has been gathering intelligence for weeks on possible protests. The owner of this all the ty bookstore says seven of his nine employees got home visits from the feds. Its always a little upsetting when an Authority Comes to your house and your like, what did i do . Reporter military leaders are also on hand. A planning document shows that 39 kernels are here in an advisory role. Thats more than the number on the ground for the pope visit last year. Today after months and months of planning, clevelands chief of police sounded confident. Its game time. To coin a phrase from the cavs. Were ready. Reporter just how kwuk quickly a group of protesters can be disruptive. They have shut down this street and this is the sblans to where the delegates are heading for a greeting party. They cant meet that greeting until they are greet ed by this. As for that open carry law the governor tonight saying he is powerless. He cant us is spend it temporarily. Open carry is still in place. Quite a show of force. Stephanie gosk, thank you. Sdplnchts now to the business at hand as Republican Press pair to formally dominate donald trump as their candidate. Our latest poll shows trump still trailing Hillary Clinton by 5 points. Thats the same as it was three weeks ago. As our Halle Jackson explains, they have a big job ahead to bridge the deep divide within their own party. Reporter with balloons in place, the celebration inside the Convention Even is whats happening outside colors the campaign trail yet again. Baton rouge expected to be recognized tomorrow night in cleveland, a senior trump official tells nbc news, with donald trump calling the country divided and out of control blaming a lack of leadership. Now hoping to show his party and the world hes ready for the responsibility. This is clearly going to be Donald Trumps convention. The dell gaegates on the floor are going ob his delegates. Reporter that message, unity. But look at the numbers. 80 of republicans say the party just isnt there, according to our new poll. With the unfavorable rating the worst in the history of our poll. Only 38 of Republican Voters say they are satisfied with him. If the public sees the donald trump that ive gotten to know in private, he will not be stopped. Reince priebus defending his candidates personality and most controversial policy. Donald trump is calling for a total and complete shutdown of muslims entering the united states. Reporter today arguing trump has pivoted on his temporary ban on muslims entering the u. S. Even his own vp pick disagrees with him on it. And mike pence is not a tan of negative tam paining will have to show how hell reconcile trumps tone. This is a good man thats been talking about the issues. But name calling . Donald trumps candidacy has been about the issues the American People care about. I. I called her crooked hillary. I didnt ask him to do it. But i dont think he should did it because its different for him. Reporter late today here in cleveland, the roll out of the big names set to speak in prime time and the people promoted arent paul ryan or Mitch Mcconnell or chris christie. Instead as the trump team tries to personalize its candidate, its about friends and family. Six trumps will talk to the delegates gathered here over the next week. Perhaps showing that while donald trump may be able to share the spotlight, hes never far from it. Lester . So quiet where you are right now. Wont be that way this time tomorrow. Hillary clinton also responding to the Police Killings in baton rouge today calling it an assault on us all. While the rnc is going on here, shell be on the campaign trail in full force. Our latest polling shows her email scandal is taking a toll on her campaign. We get more of that from casey hunt. Reporter Hillary Clintons email use casting a long shadow over voters views of her today. Theres evidence they were extremely careless. Reporter last fall only 42 of americans said her private e email use as secretary of state was important to their vote. Today our new nbc news wall street journal poll shows thats up to 55 . With trump sure to hit the issue in cleveland, clinton is airing antitrump ads. Planning to hold five Campaign Events during the conventions first two days. Clinton getting an assist from senator elizabeth warren. Insecure money grubber. Reporter promoting trump with a barrage of tweets this wbd slamming as the ticket too smar, insecure, weak men. Warren, who trump calls goofy, has been clintons vp short list. But with trumps running mate a conventional conservative, some of the pressure on clinton to pick a fighty progressive could be off. Instead she could go with a swing state senator like tim kaine or tom vilsack, who has known her for decades. I have seen her work and i have seen what she feels strongly about. Trust is about results. Reporter clinton working hard to convince voters who say they doubt her honestly that shes worthy of their trust. Want to turn now to chuck todd, nbc news political director. Some would say this is a chance tr donald trump to assure not only republicans but the rest of the country that hes got that. I think if this is a successful week, hehe almost has to. Look at the point were at. We have a jittery nation thats been absorbing all of these tragedies and attacks and terrorism. But its the totality of it that makes a public jittery u. You also have a jittery republican party. Not sure if this guy has what it takes. They look at the political opportunity standing in front of them. Shes very vulnerable. But they are jittery thinking this is guy is going to blow it. Thats what this week has to be about for him. Trying to show the country that he can handle the big moment that sitting here right now. He could be the law and order guy, the strong, tough goi. Hes also got to reassure this crowd he can win. Right now, its an uphill battle for both. We will be spending a lot of time here. Thank you. Joining us for nbcs prime time coverage of the republican National Convention tomorrow night at 10 00 p. M. Eastern, 7 00 pacific time. Overseas now to the deadly military coup attempt. Our chief Foreign CorrespondentRichard Engel has the latest from inside turkey. Reporter this is how turkey once its failed military coup to be remembered. Civil yans standing down, forcing one to frantically retreat. Others confronting a bus of alleged plotters. The people defending their elected president. Today he helped carry a coffin at a funeral for his campaign manager, among the roughly 200 People Killed in the attempted coup. More than 6,000 alleged conspirators have been detained. The traitors will be rooted out like a cancer, he promised, who survived a close call. Cnn turk, a local channel, kept broadcasting even as gunmen storm ed their studios. There was a single shot fired inside the building. Thats the case. Reporter the chief editor says his jet was harassed by rebels flying f16s. While he was flying into istanbul, we know there were at least two or three f16 fighter jets. In a cockpit recording, a a control tower warns his plane about the rebel fighters, which reportedly locked on but never opened fire. So tonight the celebrations continue for both the failed coup and the president s survival. Richard engel, nbc news, istanbul. A killers final days. New details on what the attack er in nice, growing up, we were german. We danced in a german dance group. I wore lederhosen. When i first got on ancestry i was really surprised that i wasnt finding all of these germans in my tree. I decided to have my dna tested through ancestry dna. The big surprise was were not german at all. 52 of my dna comes from scotland and ireland. So, i traded in my lederhosen for a kilt. Ancestry has many paths to discovering your story. Get started for free at ancestry. Com. Squuuuack, lets feed him lets feto the sharks sharks yay and take all of his gold and take all of his gold ya and hide it from the crew ya. . Squuuuack, theyre all morons anyway i never said that. They all smell bad too. No you all smell wonderful i smell bad if youre a parrot, you repeat things. Its what you do. If you want to save fifteen percent or more on car insurance, you switch to geico. Its what you do. Squuuuack, its what you do. They keep telling me drink more water. Exercise more. I know that. Try laxatives. I know. Believe me. Its like ive. Tried. Everything my chronic constipation keeps coming back. I know that. Tell me something i dont know. vo linzess works differently from laxatives. Linzess treats adults with ibs with constipation, or chronic constipation. It can help relieve your belly pain, and lets you have more frequent and complete bowel movements that are easier to pass. Do not give linzess to children under 6 and it should not be given to children 6 to 17. It may harm them. Dont take linzess if you have a bowel blockage. Get immediate help if you develop unusual or severe stomach pain, especially with bloody or black stools. The most common side effect is diarrhea, sometimes severe. If its severe stop taking linzess and call your doctor right away. Other side effects include gas, stomacharea pain and swelling. Talk to your doctor about managing your symptoms proactively with linzess. But i keep it growing by making every dollar count. Thats why i have the spark cash card from capital one. With it, i earn unlimited 2 cash back on all of my purchasing. And that unlimited 2 cash back from spark means thousands of dollars each year going back into my business. Which adds fuel to my bottom line. Whats in your wallet . Were back now with new details about the man who weared out the horrific truck attack in nice, france. Police revealing that cameras caught him doing test runs at the location where he ultimately killed 84 people with his truck. We get more from bill kneely. Reporter two more arrests today. Hunting for possible accomplices to mass murder. They released the killers exwife without charge. They now say he rehearsed his rampage twice. Cameras record ed him last tuesday and wednesday driving the same rented truck on the same road he took thursday night when he plowed into crowds of people. Survivors, including americans, met today still in shock. The terror of not knowing what was going to happen, the shock was just hell. It was just something coming towards me. Then the people were just lying there like rag dolls. He was going high speed ramming on the people. Reporter of the nearly 300 people he hit on his rampage along this road, 18 are still on life support. Armed police patrolled nice today, but everyone is asking how can other attacks be stopped. For months antiterrorist police have trained. This drill simulating gunmen attacking a train. In another they battle suicide bombers. But they admit they simply cant prepare for everything. Tonight people spat at the place where the truck driver died and grieved at the memorials. Nbc news, nice. Were back in a moment with the severe storms m thats life. You diet. 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Reporter cars under wart after waters rose 13 pete in three hours in the parking garage of this North Carolina mall. Flooded roadways, rescue crews trying to help people trapped outside of their homes and inside their cars. I thought i should find somewhere else to stay tonight because its impossible to just go home. I was told that water is pouring in to the house and i dont have no idea whats going on in my house right now. I never saw so much water. The water was up to my knees. My clothes are wet, im freezing. Reporter in the heartland hail the size of a quarter. Heavy rains and 70 mile per hour winds left more than 14,000 homes without power this afternoon across iowa. Crews cleaning up mangled metal and uprooted trees, while stunned residents take stock of whats left. Nbc news, new york. When we come back here tonight, the man whose witnessed over half a think fixing your windshield is a big hassle . Not with safelite. 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Its an amazing to think about how much history has been written on convention floors like this one. And few people have been there to witness it in person as many times as a man youre about to meet after more than a dozen of these gatherings. To him its less about the politics and more about the process of how we choose our president s. One of my favorites, of course, is this one from 1976 in kansas city. Mike miller has had a backstage to this right of american politics for 52 years. Is there a rhyme or reason as to where states are located . There definitely is. Theres a a formula for the states thats based on their political performance. Cleveland marks convention 14 for the 79yearold. E he first started coming as a reporter in 1964. Then in 1972 he started working on the rnc as a behind the scenes operation guy. For muller conventions are part fascination and heart hobby. He hz a treasuretrove worthy of a museum. The National Republican league in 1895. The contested convention in kansas city remains one of his favorites. President ford won the nomination only after defeating a strong challenge from ronald reag reagan. But some reagan supporters made some noise. They blew those air horns at a key time and brought the convention to a standstill. You couldnt do anything. So we just had to weather that. Those things are now banned by party rules. Among other moments that stick out in millers mind, ray chars bringing down the house in 1984. And this moment in 2012. What do you want me to tell romney . That was a surprise to me and everyone else. Nobody knew he was going to do it. He asked one of the technical people do you have a stool. And they said sure. They thought he was going to sit on it. Miller swears this will be his last convention, but keep in mind, hes already retired three times. Theres been so much expectation for this convention. What are you expecting . I dont know. There are always defining moments that you remember forever. I u dont know what they will be. I know there will be one or more. Always. The Republican Convention through the eyes of a man who hasnt seen it all, but hes seen an awful lot. Well be looking for those surprises this week. Thats going to do it for us. Im lester holt. For said he couldnt handle talking about it. I was angry. Youre not going to tell me what happens, dance around the issue, tell three different stories. It started as a teen romance. Two of my girlfrienders like i met this guy, you need to meet him. I was in love. It ended in one of the strangest love stories youll ever hear. Felt like i was hit by a bus. Before the wedding, her mother and his father got married. They told us we ran off, we elop eloped. Two families stunned. It was nothing compared to what happened next