Cheaters linked to the state department and homeland security. Reality star josh duggar is on the list. Good evening, we begin with breaking news on several fronts tonight. First, the two American Servicemen that jumped into action when a gunman prepared to open fire on a train. The americans taking him down. Holding him. Police meeting the train in a station in france. At their feet, some of the attackers ammunition. Investigators combing the train, at least two wounded. Authorities grateful to the americans that acted quickly. Martha raddatz leading us off. Reporter tonight, on a crowded train, it was the americans to the rescue. Unarmed, offduty u. S. Service members saving countless lives. It happened aboard the 3 17 p. M. Train from amsterdam to paris. A 300mile trip. At 5 45, as the train was going through belgium, reports of shots fired. The gunman, reportedly armed with an automatic weapon, a knife, and close to 12 additional cartridges. But the two americans overpowered hi this video shows the police arresting a suspect when the train arrived in france. One of the two American Service members was wounded. And is in the hospital tonight. The injuries are not life threatening. A french actor wounded as well. Frances interior minister rushed to the scene. Thanking the two americans, calling them courageous. And calm under very dangerous circumstances. Frances anti terror unit now in charge, but the gunmans motives are unclear. France has been alert since the Charlie Hebdo shooting in january and the seizure of hostages at a kosher market. 17 were killed. Martha, they dont know the motive, but the Anti Terrorism unit now leading the investigation . Yes. They say the suspect is a 26yearold moroccan. Who had been on french intelligence radar, but they dont know a motive yet. Thank you. To the other breaking story, a frantic scene in new york city. Shots fired inside a Federal Building in lower manhattan. A Security Guard shot in the lobby, later dying. After being rushed for medical help. Witnesses say the gunman opened fire, then took his own life. The details coming in right now. We turn to linzie janis, in new york. Reporter good evening. That Federal Building contains veteran health services. He has been said to be a veteran. And he turned the gun on himself, shooting and killing himself. The Security Guard, not surviving. The scene described as chaotic, and police still trying to contain it. Linzie, thank you. Next to another developing headline, hurricane danny gathering strength. Now the first major hurricane of the atlantic season. At this hour, a category three storm. Winds up to 115 miles per hour. Were learning more about the potential track of this hurricane, and also the Severe Weather this weekend. Lets get right to rob marciano, tracking it all. First, the track of this thing. This is the strongest storm in this part of the tropics in five years. It will weaken towards the caribbean. It will hit the islands monday, tuesday, wednesday. They need the rain, so they will take a weakening storm. Of greater concern to the u. S. , the 50th state. Tropical storm kilo, in the vicinity of hawaii by tuesday or wednesday of next week. And the Severe Weather youre tracking this weekend . The same storm bringing damaging winds to the fire zone, bringing Severe Weather to the midwest. Heres the risk area tomorrow. The front pushing through the dakotas, and to minneapolis. Could bring damaging winds and maybe tornadoes. And you mentioned the fire zone, and the demand so great, authorities are reaching out to everyday civilians for help in fighting the fires. Heres what theyre up against. Look how fast this fire is moving. Burning across this hillside in washington state. And the plea as we learn more about firefighters that died, trapped in their vehicle. Kendis gibson has the story. Reporter tonight, watch this allout effort to save a home in omak, washington. The owner looking on as his home of 17 years succumbs to the flames. Is that surreal . Yeah. Yeah. You dont really think its going to be until it happens. Reporter more than 135,000 acres burning in the last 24 hours alone. The biggest challenge today, the winds gusting to 60 miles an hour. The task just seems impossible out here. Fires pop up at any moment and anywhere. Theyre fighting this one pretty aggressively. State officials now asking for volunteers to join the fight. Those guys put their lives on the line to save my place. And i feel an obligation to get out there to try to help out. Reporter the fires turned deadly on wednesday. Three firefighters killed. The mother of the youngest victim, 20yearold tom zbyszewski, devastated. He was the center of our lives. And our future. Reporter firefighters holding their hands and helmets to their hearts during this solemn procession. Tonight, more help is on the way. Dozens of firefighters from australia and new zealand are expected to join the effort this weekend. David . Thank you. Now to your money, and the alarming end to the week on wall street. The dow plunging more than 500 points today. For the week, its down 1,000 points. The biggest loss in four years. Lets get right to rebecca jarvis. Whats driving this . Two things. Fears of a Global Economic slowdown. Fears of a Global Economic and the Federal Reserve is on the verge of hiking interest rates. That means everything will get more expensive. And this is concerning for everyone trying to plan retirement. But perspective is whats important. In the last four days, stocks are down, and the average 401 k is down 6,000, but theyre up 61 over the last five years. Which is why its so important not to panic. So, keep the perspective. Rebecca, thank you. And next to a headline from north carolina, a judge declaring a mistrial. In the trial of a Police Officer charged with manslaughter. If the jury deadlock. Unable to decide whether an officer is guilty of killing an unarmed football player. Looking for help after crashing his car. The officer firing 12 shots. Now to st. Louis, details coming in from the autopsy of a teenager killed. Authorities saying he was shot in the back. This video was taken from the protests following the shooting. Police firing tear gas. Police on alert heading into the weekend. Steve osunsami on the case again tonight. Reporter tonight, police in st. Louis are getting out in front of the story, revealing early results from an autopsy showing that two white Police Officers here shot this 18yearold black suspect in the back. Rock brick brick reporter already, police have faced bricks, rocks and bottles from young residents angry over the shooting death of mansur ballbey. He died wednesday after police raided a home in a tough neighborhood known for drugs and guns. Police found stolen weapons and crack cocaine, and claim the teenager pointed a gun at them as he ran away. I have a witness statement that there was a gun involved and i have officer statements saying that there was a gun involved. Reporter but the teens family tell abc news theyre not buying the police story. He was this, he was that, he had a gun, there was drugs. Those are the same speeches they give every time they shoot somebody. Reporter tonight, the st. Louis postdispatch is reporting that investigators found fingerprints and dna on the teens weapon. For police, proving he had the gun is key to justifying the shooting. Thank you. Next, to the race for 2016. Donald trump, the crowds gathering for a rally in mobile, alabama tonight. Trump saying theres so much interest, they needed a bigger venue. Tom llamas asking some of the audience why theyre so eager to hear trump tonight. Reporter tonight in alabama, theyre lining up for donald trump. For the donald. Trump for president. Reporter the campaign hoping to fill this stadium. The candidate says it will show his message is catching fire. Thats going to send a signal we want strong borders. Were being ripped off at every level. Reporter this family from alabama tweeting trump, the entire family is driving six hours to mobile to see and support you. And sending us this video from the road. Trump 2016. Reporter trump says when they planned this event, they started with a venue that could hold 1,000 people. Then 2,000 people, then the convention center. And now this. A stadium that can hold 40,000 people. I love donald trump. And i dont care what they say about him. He says it like it is. Reporter one of his competitors, jeb bush, announcing hes heading to the border on monday. Tweeting today, trumps immigration plan is not conservative, and does not reflect our nations values. As the mogul promises hes not going anywhere. Supporters for trump have started to file in. They gave out 30,000 tickets. If that many people come, this could be the single largest event of the campaign season. Thank you. And trump will be guest on this week with george, sunday morning on abc. To los angeles, and an explosion in a Downtown High rise. Traced to an electric generator. The question now, why did it fail . Knocking out power in nearby buildings and the staples center. A concert plunging briefly into darkness. And a gas explosion for the second time this week. The latest, seriously damaging this high school in new york, injuring three workers. Just days from the opening of the school year. As you know, just days after an explosion ripped through a motel in washington state. Guests escaping just in time. Ron claiborne with a warning, how to detect leaking gas. Reporter the explosion ripping a gaping hole in the side of a high school. We saw a quick flash, and a large explosion. Reporter it happened thursday night as contractors were refurbishing a science lab. Officials say it appears one of the workers lit a match to check on a gas line. The blast injuring three workers. One of them, critically. The school has sustained very, very serious damage. Reporter three days after an apparent gas leak explosion in washington. The power of exploding gas on display in so many incidents. This new jersey home blown to pieces in february, once again a gas leak. If you ever smell gas, get out, and call 911 or your gas utility. And Authorities Saying the damage to the school is so severe, it will not open on time in early september. 4,000 students will have to go somewhere else. Ron, thank you. And we turn to iraq, where Authorities Say a key isis figure has been killed. The pentagon confirming the death of haji muta, the second in command in iraq. Back here at home, a powerful moment for the army rangers. The first to complete the grueling army training. Captain griese and lieutenant haver. Graduating along with 94 men. Pinned with the coveted ranger black and gold tabs. Still unclear if they will be able to serve as rangers. The decision on that, forthcoming. Tonight, we salute them. Theres still much more ahead on world news tonight this friday. The hacking scandal that has husbands and wives crashing web sites. The fbi joining the investigation. After the names of millions of Ashley Madison customers are now made public. Who is using this site, and why the investigation . And the art exhibit that went wrong. Everyone chasing a giant ball right there, down the street. And look at this guy. The College Freshman with a lot on the line. Free tuition, if he can land this shot. Its worth staying tuned for. Well be right back. So youre a Small Business expert from at t . Yeah, give me a problem and ive got the solution. Well, we have 30 years of customer records. Our cloud can keep them safe and accessible anywhere. My drivers dont have time to fill out forms. Tablets. Keep it all digital. 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Estrogens may increase your chances of getting cancer of the uterus, strokes, blood clots, or dementia, so use it for the shortest time based on goals and risks. Estrogens should not be used to prevent heart disease, heart attack, stroke or dementia. Ask your doctor about premarin vaginal cream. Were going to turn next to new fallout over the Ashley Madison hacking scandal. The first lawsuits already filed by husbands and wives, crashing websites to see who is using the service. That promotes extramarital affairs. The list now growing tonight. Heres juju chang. Reporter overnight, the second massive data dump. Life is short. Have an affair. Reporter now leaving 35 million Ashley Madison accounts exposed. September is going to be a good month for divorce lawyers. Reporter more than 13,000 of those accounts linked back to government servers, to employees at the state department, defense, even homeland security. Defense secretary ash carter is confirming the pentagon is investigating accounts linked to military email addresses and noting adultery could be a criminal offense in military law. Of course its an issue because conduct is very important. Reporter but civilians feeling the fallout, too. Reality star josh duggar issuing an apology. Admitting in a statement, i have been the biggest hypocrite ever. While espousing faith and family values, i became unfaithful to my wife. This, just months after he admitted to sexually abusing minor girls in his teens. Meanwhile, the hackers posting this learn your lesson and make amends. And urging the hacked customers to press charges against Ashley Madison. Those lawsuits already under way. One seeks 750 million in damages. More turmoil for Ashley Madison. A lot of lawyers being called. More on nightline tonight, well be watching. When we come back, a former nfl cheerleader sentenced. Involved with a teenage boy. 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Part of a public art display, but it wasnt supposed to go like this. The 15foot ball escaped when winds blew it away. You can see the staff chasing it down there. An Incoming Freshman at ball state, free tuition for a semester if he can land this shot. Its len turner. Hes going to school for free. We love it. The crowd cheering him on as he lets it fly. That is one good shot tonight. When we come back, three faces you just might remember because of what they did ten years ago. Can you guess our persons of the week . But i keep it growing by making every dollar count. Thats why i have the spark cash card from capital one. I earn unlimited 2 cash back on everything i buy for my studio. And that unlimited 2 cash back from spark means thousands of dollars each year going back into my business. Thats huge for my bottom line. Whats in your wallet . Ya know, viagra helps guys with erectile dysfunction get and keep an erection. Talk to your doctor about viagra. 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We were with them as the storm approached. David muir is inside the superdome. A significant amount of water coming through the roof. We all know, later the levees would break. Countless families going to the convention center. We need help this woman, a diabetic, told me this. I dont want to die like this. Collapsing in front of me. And this nurse, an evacuee herself, quickly getting to work. There you go. Ten years later, we wanted to know what she carries with her. You were the one that jumped into action. It just, adrenaline took over. That woman survived that day. Grateful to that nurse. If anything good could come of katrina, what would it be for you . I realized i was stronger than i thought i was. So many stronger than they thought. Ten years ago, we heard about a hospital that flooded. No power. Wading through water almost up to our waist to get to charity hospital. Where patients have been waiting five days for rescue. Inside we would meet doctor peter w. Yu yushing a flashlight, he showed us the icu. This water is over 12 feet deep. Ten years later, we find the doctor, remembering the triumphs. Patients, no power, they cared for them anyway. None of the patients lost their lives. I consider that almost miraculous. And tonight, the new University Medical center had just opened. And we had one more question about a patient we met. Who had just given birth. What a time to have a baby. In a hotel, on the floor. Ten years later she and her daughter mariah, about to turn 10. Listen to what mariah told us about her mom. Shes my hero. We showed them the images from ten years ago of baby mariah. They are aware of what they survived. We made it. The strength of so many who have rebuilt over the last decade. And sunday night, an inspirational journey. Robin roberts going home. Her special, katrina ten years after the storm, sunday night at 10 00 p. M. Eastern. In the meantime, thank you for watching on a friday night. Im david muir. From all of us here at abc news, have a good ev. New at 6 00, shocking allegations against a local planned parenthood clinic. Did they harvest an organ from a living newborn . How much did you lose today . Wall street turns in its worst performance since the great recession. An important deadline. Can they come up with something that kill keep the raiders in oakland . A Storage Facility was about to be demolished with everything in it. About to be. How tenants may get their things back. The people who have been putting out under cover videos showing planned parenthood in a bad light are now making serious allegations against the clinic here in the bay area. Good evening, im ama daetz. Im dan ashley. The in the video a woman is making disturbing claims about what she says she saw at a san jose planned parenthood clinic. Abc7 News Reporter david louie is live with the story there. David . Reporter the controversy extends to san jose. These allegations are made that organs were harvested from a late term fetus aborted at the planned parenthood clinic located on the alameda in san jose. Its Public Affairs representative had no comment about the courts decision because shed not seen it. An antiabortion group has been posting videos from interviews of planned parenthood things done deceptively to promote falsehoods. Reactions from claire mccaskill. The tapes are disturbing and obtained by fraud. And is an effort to get planned parenthood. Reporter a company that provides fetal tissue for Research Went to court to get the antiabortion group to stop running the videos