Inside rikers with its history as one of the most violent jails in america. Diane sawyer inside tonight. And graduation day. You need to meet our very little persons of the week. Good evening and we begin tonight with that alarming scene playing out at the white house late today. A man walking right up to a white house check point with a gun. Authorities say he would not drop it. It triggered a lockdown at the white house. The secret service fired. The gunman injured but he survived. Jonathan karl at the white house tonight. Reporter Police Officers in Tactical Gear racing to the white house, as a terrifying situation unfolded just a block away. It was just about 3 00 p. M. Not far from the south lawn. A man walked up to a white house checkpoint carrying a firearm. Secret service say he was ordered to drop the gun but refused. So the agent fired a single shot, wounding the man in the abdomen. This one of the few sunny days weve had in washington all month. So there were families out here, joggers, tourists. The place packed with people when that shot rang out. Right over there. Confusion as authorities raced to the scene. Get back over that way. We heard a shot and we got scared. A single shot. The cops come out of the side. Theyve got their guns drawn. Reporter the white house put on lockdown. The president golfing today, but have the biden was on white house grounds. Jon, what do we not about the gunman . Reporter they have not released his name yet but they are searching a car a couple blocks from here. And the man is in a hospital in critical conditions. Jon, thanks. We turn to another breaking headline at this hour. This one involving the crash of the passenger jet egyptair 804. There are reports there may have. Brendan smoke and a fire on board in the moments before it vanished from radar. The flight disappeared from radar about 175 miles off the coast of egypt. David kerley this evening on the signal sent minutes before the jet went down. Reporter this jetliner apparently sent data before disappearing. Suggesting there was smoke, and possibly fire in the all important equipment compartment. The airbus a320 had a Data Transmission system know as a. C. A. R. S. Which sent signals of smoke in the lavatory, and avionics smoke, which would be the equipment bay below the forward lavatory. A bay that contains the jets electronics. Which control the entire aircraft. This is a major clue to what happened. This is a major clue . Im going to say, im going to come off the bomb theory and say it was a mechanical error caused by fire. Reporter the messages obtained by the website aviation herald, were over a 3 minute period before all the data stopped. Thats when the jet plunged into the sea at nearly 2 30 a. M. The pilots checked in with air traffic control, saying all was fine. But 16 minutes later at 37,000 feet, disaster. Greek radar reporting the jet lurched sharply left 90degrees before spinning back 360degrees to the right, disappearing without a distress call. Tonight weve learned flight 804 was piloted by captain mohammed shukair, his copilot mohammad assen. Both with extensive experience, and nothing in their public records that is suspicious. David kerley joins us tonight. We heard him say that he thinks fire is now the cause of what went wrong. And many are going to ask, was it a bomb or explosive device that started this . Absolutely. And really, the black boxes will give us the answer to that, david. As far as the data that came from the aircraft, airbus and egyptian investigators will not comment on the data. David kerley, thanks. And the hunt is on for the crucial black boxes. Our matt gutman is right there tonight on the mediterranean where they have already made some gruesome discoveries. Reporter tonight the international armada of ships and planes taking in that grisly haul. Egypt air saying seats, luggage and human remains were spotted floating in the mediterranean. U. S. Planes joining in the search. Tonight more possible debris spotted in flyovers. Earlier we boarded a charter plane to scout the same seas search teams were scowering. Finding debris on the surface here is one thing but finding actual pieces of the fuselage because this part of the mediterranean could be 10,000 feet deep. The real prize for search teams deep beneath the surface, the fuselage and black boxes emitting pings for only 28 more days. The race now on to find them. To get an accurate signal a search and rescue boat needs to bo on top of the wreck an, not more than a couple miles away. And tonight, so many Unanswered Questions for the families of the 66 souls on board. In cairo, this man, grieving four relatives lost. Finding that small debris field, david, could help significantly narrow the search area and allow investigators to discover those black boxes more quickly. Were also learning that the u. S. Is dispatching a second plane to help with the search. David . Matt gutman, thank you. The egypt air crash adding to security concerns at the u. S. Apts as well. The ts sarks head Peter Neffenger saying that the 34 million they shifted to the tsa was a good down payment but the agency needs much more. Amid criticism that lines were causing passengers to miss their flights across the country. A frightening scene in a michigan courtroom tonight. And national headlines. The uber driver accused of going on a killing spree. He was shouting out to one of his alleged victims in the background. His sferps led to drag him away. Here is alex perez. Reporter deputies walking uber driver jason dalton into a michigan courtroom for a hearing today. But as testimony got under way, this odd rant from the suspected gunman. You look and it gets and its with blood. Reporter the outburst, overwhelming for tianna carruthers. On the witness stand, covering her eyes to block the alleged killer from view and bursting into tears. Dalton eventually carried out for refusing to obey the judge. I could never forget his face. Reporter the last time carruthers came face to face with dalton, she nearly died. It was back in february, when investigators say the uber driver went on a shooting rampage, killing six. Please hurry up. Somebodys been shot. Reporter carruthers was shot four times. I pretended like i was dead already. I couldnt move. Reporter she was able to yell and get her daughter and other kids to safety, which as she told me earlier this month, is what matters most to her. I do hurt. But lets be honest, do you really think that a child could take four bullets or maybe even one . Reporter and dalton did eventually rejoin the Court Hearing via video. When it was over, the judge ruling there is enough evidence for him to stand trial for mudder. David . Thank you. Tonight, San Francisco is the third city to force out its police chief in the last year amid growing racial tensions. Chief gregly suhr has stepped down. Deputy chief tony chaplain has appointed to acting chief. We turn to the race for the white house. Donald trump endorsed by the nra today, saying that Hillary Clinton will take their guns. Hillary clinton tweeting, youre wrong, donlds trump, bev we can uphold Second Amendment rights. Abcs tom llamas with the video they played of clinton at the rally. Reporter tonight, donald trump accepting the endorsement of the nra saying Hillary Clinton is coming for their guns. Hillary clinton wants to abolish the Second Amendment. Just remember that. Reporter and then this line drawing a roar of approval. We are getting rid of gunfree zones. Okay . I can tell you. [ cheers and applause ] reporter and what about trumps own hotels . The Trump Organization telling us there are no restrictions on licensed individuals carrying guns in our hotels or golf clubs. But when we called trumps maralago resort, we were told it was a gun free zone. And at the Trump National doral in miami, a security supervisor there telling us they would quote, much rather not have guests with guns on the property at all. But in this room the presumptive gop nominee bragging about his sons gun collections. They have so many rifles and so many guns sometimes even i get a little bit concerned. I say, thats a lot. Reporter and drawing a contrast with clinton. Hillary wants to disarm vulnerable americans in high crime neighborhoods whether it is a young single mom in florida or a grandmother in ohio. And thats why were going to call her heartless hillary. Reporter clinton has campaigned hard on gun control, releases this ad with the daughter of the principal shot and killed in newton. She is the only candidate who has what it takes to take on the gun lobby. Reporter but today that same gun lobby openly mocking clinton. I bet youre wondering where i bet youre wondering where hillary stands, right . Lets hear it straight from the horses mouth. Reporter its moments like that, former president bill clinton says, proves republicans are nervous. I always find you should respect your adversaries. They do not spend their time attacking people they are not worried about. And tom llamas with us tonight from louisville, kentucky. There news about Donald Trumps taxes . In the late 70s for two year, he did not play taxes. He took advantage of a loophole for real estate investors. He says he has used the system to his advantage with taxes of bankruptcy. Tom llamas, thanks. Next to the zika emergency and a startling headline. The cdc reporting triple the number of pregnant women with the virus. They had reporting 48 women with the virus. And tonight, its up to 157. Tonight, they are acknowledging the mothers are at a risk with having a child with birth defects. We turn next to an abc news exclusive here. Diane sawyer inside Rikers Island, a sweeping jail complex with the highest rate of violence in the country. And the most of them are awaiting trial, not convicted of any crime. What could be a major change inside those walls and diane takes us in. Reporter tonight, come with us to Rikers Island. A place haunted by a violent history. Listen. The sound of solitary confinement. They treat us like animals in here reporter what did you say . They treat us like animals. Reporter this is the punishment for inmates who attack officers or each other, fighting, slashing with hidden weapons. Raphael figueroa says in the past he was locked a year and a half straight in solitary. Ive been beaten down, almost killed exactly in this jail. Ive been more in prison than in streets. Reporter he says hes changed forever. Which brings us to the new man in charge at rikers. His most controversial idea to be the first jail in the country to get rid of solitary altogether, for the younger inmates, 18 to 21 years old. A small percentage of the population, the most difficult to control. Doesnt that give you pause . Getting rid . And its not easy. I mean, these are these are difficult, dangerous people that were dealing with. Im not saying this is an easy task for us. But its a much better hopeful outcome than what we were doing. Reporter youre never been taken in that belief . I havent. He feels strongly about this. Diane sawyer is here tonight. You talked to so many people inside the wall, including a 17yearold son who had never been away from home. 17yearold son. And nonviolent drug offense, so many there are. And you will get a chance to see if its possible for the lives to change. If the commissioners theory. A reminder, dianes inside Rikers Island airs tonight on nightline. There is braking news ahead involving bill cosbys wife, camille. And a man dying after being stunned by police with a taser. Officers using it more than a dozen times and you will hear the moment after the struggle when one of the officers says, im fired. The stand off with sferps and guns drawn. Traffic stopped in broke directions. And reaching the top of the world. And tonight, news coming in of a major victory. Could protect you from diabetes . What if one situp could prevent Heart Disease . One. Wishful thinking, right . But there is one step you can take to help prevent another serious disease. Pneumococcal pneumonia. If you are 50 or older, one dose of the prevnar 13® vaccine can help protect you from pneumococcal pneumonia, an illness that can cause coughing, chest pain, difficulty breathing, and may even put you in the hospital. Even if you have already been vaccinated with another pneumonia vaccine, prevnar 13® may help provide additional protection. Prevnar 13® is used in adults 50 and older to help prevent infections from 13 strains of the bacteria that cause pneumococcal pneumonia. You should not receive prevnar 13® if you have had a severe allergic reaction to the vaccine or its ingredients. If you have a weakened immune system, you may have a lower response to the vaccine. Common side effects were pain, redness or swelling at the injection site, limited arm movement, fatigue, headache, muscle or joint pain, less appetite, chills, or rash. Get this one done. Ask your doctor or pharmacist about prevnar 13® today. Her long day as anne. Hair stylist starts with shoulder pain when. Hey joanne, want to trade the all day relief of 2 aleve with 6 tylenol . Give up my 2 aleve for 6 tylenol . No thanks. For me. Its aleve. When they thought they should westart saving for retirement. Le then we asked some older people when they actually did start saving. This gap between when we should start saving and when we actually do is one of the reasons why too many of us arent prepared for retirement. Just start as early as you can. Its going to pay off in the future. If we all start saving a little more today, well all be better prepared tomorrow. Prudential. Bring your challenges. Try cool mint zantac. Hey, need fast heartburn relief . It releases a cooling sensation in your mouth and throat. Zantac works in as little as 30 minutes. Nexium can take 24 hours. Try cool mint zantac. No pill relieves heartburn faster. Were going to turn next tonight of graphic video of a man struggling with police in georgia, dying after being repeatedly tased by officers. Abcs eva pilgrim with what can be heard on that video. We are on highway 85 and my son is freaking out reporter tonight newly released body camera video. Whats caused him to do this . Drugs. Hes hallucinating, hes going to kill us all if we dont get some help. Reporter showing fatal final moments. Georgia sheriffs deputies using a taser on chase sherman, who is having a psychotic reaction to synthetic marijuana. Youre not going to shoot him. Do you hear me . Reporter a tense struggle in the back seat just off a georgia interstate. Hes got my taser. Stop fighting. Let go of my taser. Reporter officers tasing the handcuffed the 32yearold 15 times. I got him pinned, he cant come up. Reporter they manage to subdue him, when suddenly get him out. He aint breathing. Reporter after sherman dies at the scene, the video shows a deputy worrying about his job. Dude, im so fired. Nah, nah. Reporter the coroner ruling shermans death a homicide, his family now suing. He didnt deserve to be tortured to death. Reporter the deputies were not suspended, the local District Attorneys Office say they are still investigating the case. David . Thank you. When we come back on a friday night, a tense stand off on an american highway. The pictures comesing. 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Here from our little persons of the week. Class of 2016, the kindergarten class. 5 and 6yearolds who did it. Does it feel like its on there good . Reporter proud parents carefully putting on those caps. Perfect reporter a smiling mom. The soontobe graduates and their younger siblings. 16 students lining up, without the classmates they thought be with, instead with the friends theyve made. All of them at st. Jude Childrens Research Hospital in memphis, tennessee, in the classrooms set up there instead because all of these children have been battling cancer. Whats the last one . Reporter many worried theyd miss out on graduation when they left their schools. But the team here, determined to give them their day. Sarahs daughter is graduating. To come here and have some kind of normalcy, i can say, helped out a lot. Reporter the moment arrived in their white caps and gowns. [ applause ] a sort of kindergarten diploma. The class of 2016 [ applause ] e. Reporter and after ward, little mack sharing with us the good news. The graduated. Now i gro to the first grade place. Reporter and a. J. , with the most Important Message for everyone . Learning to be nice. Reporter travis, his favorite part . Having fun. And being healthy. Reporter enter when he grows up . A fireman. I want to save people. Reporter tonight, we celebrate 16 graduates on their way. And so we choose the kindergarten graduates at st. Judes hospital. Got to love mack. He graduated, he told us. We will see you back here monday. Good night. Pat toomey started his career as an investment banker. Then, a wall street wheelerdealer overseeing stock trades in new york, london and tokyo. Next, toomey moved to hong kong to work with wealthy chinese investors. In the senate, its no surprise toomeys been siding with wall street. Voting to allow banks to continue making the risky investments that wrecked our economy. Afscme people is responsible for the content of this ad. From washington, d. C. , this is power players week on jeopardy here are tonights celebrity guests he is the creator and executive producer of one of the most talked about, groundbreaking series in tv history, mad men. Heres 9time emmy winner. [ cheers and applause ] an nbc correspondent and anchor for nearly 20 years, he recently joined cnn as a political analyst, and has published a critically acclaimed memoir, hows your faith . Please welcome. [ cheers and applause ] she is the maya angelou president ial chair at wake forest university, where she is the founding director of the Anna Julia Cooper center. Heres professor and editoratlarge at elle. Com