Good evening. Im George Stephanopoulos in for david. Lets get right to that breaking news. Another White Knuckle day on wall street. It began with signs of a comeback after those rough three days but it ended badly, down another 200 points, the longest losing streak in three years. Millions of americans watching their 401 k s, wondering if the worst is over, and abcs chief Business CorrespondentRebecca Jarvis starts us off. Reporter tonight, wall street whiplash. What looked like a turnaround tuesday ive been talking to traders on the floor and they expect this to be a volatile day ahead. Now were up as much as 300 points on the dow. With stocks clawing back after mondays decline, this means its the worst day for stocks, the worst day in four years. Turning instead into a tumultuous tuesdaying, closing down more than 200 points. The continuation of a global selloff and new questions about how low the market can go. What does that tell you . The sellings is not over. Reporter the typical 401 k down 10,000. Whats driving the volatility . The big picture you have to keep in mind is that the world stock markets are repricing the chinese economy. Reporter which is slowing chinese demand for everything from american cars to electronics to airplanes, a Ripple Effect that can eventually hit american jobs and is already hitting oil prices. The Silver Lining tonight, oils drop has set gas prices below 2 a gallon at over 1,000 stations in 15 states. Thats the good news right there but this is all sparking a new debate. Should the fed stick with their plans to raise Interest Rates . Reporter thats the key question for everyone out there. It touches you whether you own a stock or not. Interest rates have been zero percent for the last six years. Many expected the fed to hike them for the first time in september. A number of people are thinking this might not come as soon as you thought. Thanks very much. Now to a developing story out of west virginia. Police reporting a hostage situation at a high school. A student holding a classroom captive, the rest of the school on lockdown. Students filing out to the track. Tonight that student in custody, thank goodness. Everyone is safe. Abcs Pierre Thomas is tracking the case. Reporter barefoot and blind folded, the terror suspect arrived at the courthouse today escorted by a special antiterrorism squad. Reporter today at west virginias phillip basher high school, reports of a public gunman. As students are rushed out of the school, police are called in. There is a weapon at the school. Reporter and the news kept getting scarier. We have a hostage situation. Second floor. Hostage situation, barricade. Reporter a 14yearold male from the school holding numerous students and a teacher hostage with a pistol. Authorities able to get all 800 students out of the building safely and to take the suspect into custody after negotiations without anyone getting hurt. The suspect was transported to a local hospital for evaluation while police try to establish a motive. George, i can tell you, everyone there tonight is breathing a sigh of relief. Ill bet they are. Pierre, thanks very much. Were sorry for the mixup there. We move overseas to new developments in a massacre prooechltd on a french train, the gunman tackled by American Heros, hog tied and later carried away by police. Tonight what the shooter watched on his phone moments before opening fire and why authorities now believe he may not have been acting alone. Abcs david wright in paris for us again tonight. Reporter barefoot and blindfolded, terror suspect Ayoub El Khazzani arrived at the courthouse today, escorted by a special antiterrorism squad. Their faces hidden behind ski masks to protect their identities. Today the chief prosecutor in paris said el khazzani activated a new cell phone the day of the attack. His phone records show that while he was on the train, he watched extremist videos calling for violent acts in the name of radical islam. French authorities now believe el khazzani may not have been acting alone, that someone with access to his facebook password disabled the account the day after the attack when he was already in custody. El khazzani also gave no credible explanation how he obtained his weapons, including a kalashnikov, a luger pistol, plus nearly 300 rounds of ammunition. In his bag, a half liter of gasoline. Authorities say el khazzani initially told them he just wanted to rob the train, having found a bag full of weapons in the park. The three americans who tackled him enjoying the fruits of their fame. Last night Anthony Sadler on the red carpet of the paris premiere of straight outta compton. This is unreal. Two days ago we were on the train and now all this has happened. This is crazy. Reporter his two friends Receiving Hospital treatment at a military hospital, still haunted by that confrontation on the train. The fourth American Hero is still in intensive care. As for the case against el khazzani, its still in its early stages but if convicted he could face life in prison. George . David, thanks very much. Another story developing right now, Caroline Kennedy facing questions. The u. S. Ambassador to japan criticizing for using a private email server for public business. Our White House Correspondent jon karl with the details. Reporter this comes in an Inspector General report looking at a u. S. embassy in tokyo. It finds that she used personal email accounts to send and receive messages containing official business, including some information labeled sensitive but unclassified. Sending or receiving sensitive government information with private email would appear to be a clear violation of government policy, but today the state Department Said it has seen no indication that ambassador kennedy violated the rules with respect to her email. As for Caroline Kennedy, george, theres been no response. Jon, thanks very much. Theres another Battle Royale brewing in politics. Donald trump right at the center of it, picking a new fight with megyn kelly who confronted trump during that g. O. P. Debate. This time trumps tweets are at a powerful opponent. Forces at fox news saying its time for trump to apologize or else. Tom llamas has the blow by blow. Reporter hes battling 16 challengers but tonight Donald Trumps new fight is with fox news. Youve called women you dont like fat pigs, dogs, slobs, and disgusting animals. Reporter trump, possibly still sore from that question, and when megyn kelly returned yesterday welcome to the kelly fire. Reporter trump firing off a series of tweets. Megyn kelly must have been a terrible vacation, shes really off her game. And, i like the kelly file much better without megyn kelly. The republican frontrunner also retweeted someone elses comment, calling the anchor a bimbo. Today fox news chairman roger ails calling trumps surprised and unprovoked attack as unacceptable as it is disturbing and demanding an apology. Kelly wasnt trumps only target, the candidate launching a tirade against many rivals, even senator Lindsey Graham and George Pataki tweeting, he and graham are zero in polls. Graham firing back. The way he attacks women is going to be a death blow to the future of our party. Come to South Carolina and ill beat his brains out. Reporter trumps favorite target, jeb bush. Jeb bush is a nice person. He doesnt have the energy or the capacity to make our country great again. That i can tell you 100 . Reporter in colorado today bush trying to brush it all off. Im not a talker, im a doer. Theres a lot of really good talkers running for president. Theres one in particular im thinking of. Reporter but here in iowa, for voters like mary who made her own trump tshirt, his talk is striking a chord. I believe he tells the truth and he says it like it is. Reporter george just behind me you can see some of those Trump Supporters filing in. They love his tough talk. Tonight some Republican Leaders are still afraid that donald trump may launch an independent bid. Today the South CarolinaRepublican Party is demanding that anybody who wants to be on their primary ball on the sign a pledge that they will eventually support the republican nominee. Well see if donald trump will sign that. Tom, thanks very much. To the west now where weve been reporting on the outbreak of wildfires. 65 major ones burning right now, one monster fire in Washington State shattering records. Tonight something we rarely see, Fire Fighters in fresno against impossible conditions. Reporter tonight frightening video from the Fire Fighters themselves from the front lines. A large tree just crashed within inches of these Fire Fighters battling flames in Southern California. 65 major fires burning in the west tonight. Washingtons okanogan complex fires now the states largest in history growing even more overnight. Todays weather is going to be a challenge yet again. Reporter this large home seen before the flames, drone footage showing the charred rubble after math. Resources stretched to the brink for the first time in seven years. Foreign fighters are on u. S. Soil battling flames. This group arriving from australia and new zealand. Everybody wants to come on these deployments. Its seen as sort of a highlight of your career. Reporter the emotional toll of fighting these stubborn flames captured by this father son duo. Its been a hard adventure but one that i will look back for the rest of my life fondly. Reporter the fires so widespread and devastating. Officials say it will be several weeks before they know how Many Properties were lost here in washington. George . Kendis, thanks. Meteorologist rob marciano is in california with the forecast. More heat in the west. Were tracking a new tropical storm, erika. Reporter theyre bracing for more heat out west, especially in Southern California and across the northwest, gusty winds. Red flag warnings remaining and heavy smoke will fill the air. Temperatures into the 80s across oregon, 90s in california. Air atlantic strengthening. By sunday somewhere near the u. S. Coastline but our computer models not showing a lot of confidence towards the end of the forecast period. This could go just about anywhere next week. I know youll be tracking it. Overseas now to syria. Last night we told you about those priceless ruins destroyed by isis. Tonight isis posting new images, this roman temple leveled. Alex marquardt reports tonight from syria. Reporter the temple that stood for 2,000 years. Tonight, a pile of rubble. Here, chilling new images of what isis claims are its fighters placing barrels filled with explosives around the temple of baalshamin. Wiring bombs to its towering pillars. In an instant, this archeological treasure in the ancient city of pal meyer ra erased. Earlier this month in damascus we were shown a palmyran tomb by the man in charge of rescuing syrias historic artifacts, devastated by the reckless destruction. Weve preserved palmyran art but we cannot preserve the palmyran site. Reporter a site until now protected by an 82yearold archaeologist, reportedly accused by isis of refusing to give up hidden antiquities, before he was beheaded just last week. Iss is has looted and sold what they can, often destroying what they cant. Calling it sacrilegious. The u. N. Calls the temples destruction a war crime, and it will certainly not be the last. Alex marquardt, abc news, damascus. Tonight a passing to note. Justin wilson, the indy car racer we told you about struck by debris on the race track over the weekend suffering a severe head wound. He died last night. Tonight we learn from his family that wilson known for his generosity had one final act of extraordinary kindness. Heres abcs david kerley. Reporter indy car driver Justin Wilson who left behind two daughters and a wife may have given the gift of life to six others. Sunday night wilson was hit in the head by debris from a crashed car. He was pronounced dead yesterday. But today some of his organs donated to six patients all thought to be here in the u. S. According to his brother stefan, also a race car driver. Makes you feel proud to be his brother. And just sort of exemplifies the life that he led and always giving and thinking of other people. This is just another case of that. Reporter stefan shared the news on twitter, saying, Justin Wilson saved six lives today. Wilson was known as a generous man. His final gift lives on tonight in others. David kerley, abc news, washington. Remarkable, six lives saved. Much more ahead tonight on world news this tuesday. The real estate warning, an agent threatened by an anonymous caller, the company that pulled brokers off the street. News tonight about a popular supplement to boost memory, a new study casting doubt on the claims. And the 17th century masterpiece more than 1 million, no match for a 12yearold boy who forgot to watch his step. Well tell you what happened next. Become the only thing you think about. Thats where at t can help. At at t we monitor our Network Traffic so we can see things others cant. Mitigating risks across your business. Leaving you free to focus on what matters most. Davemorning double bogie. Game, hey, three putt. And starting each day with a delicious bowl of heart healthy kelloggs raisin bran. Hows your cereal . Sweet tastes like winning. How would you know what winning tastes like . 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Reporter managers at this firm say someone called one of their agents from a blocked number. The caller telling her that her name was picked at random out of a hat as part of a gang initiation, reportedly telling the agent they intended to bring harm to her, and that theyd see her later that day. After hanging up, that agent called police, and her company shut down all scheduled open and pulled their agents off the street. The call is being taken very seriously in light of recent events. Just last year, arkansas realtor Beverly Carter was found dead, after being kidnapped from an open house she was hosting. Im a realtor and i was showing a home and someone just robbed me. Reporter and in florida, two realtors robbed at gunpoint while showing homes to a burglar. Is there something that youre thinking if something happens this is what im going to do . I always have my cell phone on me and my hand on the emergency button. Reporter realtors agree in this business known for its open door policy, safety is key. Linsey davis, abc news, new york. When we come back, the supplement used by millions to boost memory questioned by a new report. Does it really work. And forget the zombie invasion, the startled bike rider suddenly surrounded by an erie kangaroo apocalypse. But not every Insurance Company understands the life behind it. Those who have served our nation. Have earned the very best service in return. Usaa. We know what it means to serve. Get an Auto Insurance quote and see why 92 of our members plan to stay for life. You. And itchy eyes. More than sneezing. They also bring tough nasal congestion. So you need claritind. It starts to work. In just 30 minutes. In fact, nothing works faster. So blow away nasal congestion, fast, with claritind. Ii accept im not the sprinter i was back in college. 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I accept that im not as fast, but im still going for my personal best. And for eliquis. Reduced risk of stroke. Plus less major bleeding. Ask your doctor. If eliquis is right for you. In tonights index, a reality check on one of americas most popular dietary supplements. Omega three fatty acid, fish oil, long believed to boost memory and keep us sharp as we age, but tonight a new study by the National Institutes of health is casting doubt, including that fish supplements on their own are not enough to prevent cognitive decline. Theres scientific proof that a good cry is good for you. Those who cry started out feeling worse than those who didnt. An hour and a half later they were happier than everyone else. Researchers believe the act of crying actually helps release endorphins in the brain frmt. A man in australia out for a bike ride when he encounters this, a hoard of kangaroos. They stop motionless, staring at him before they wandered away. When we come back, watch your step, caught on camera. The 12yearold boy leaves his mark on a Million Dollar masterpiece. I hate cleaning the gutters. Have you touched the stuff . Its evil. And ladders. Sfx [screams] they have all those warnings on em. Might as well say. youre gonna die, jeff. you hired someone to clean the gutters. Not just someone. Angies list helped me find a highly rated Service Provider to do the work at a fair price. Everyone can shop, but members get more with reviews, live customer support, and better pricing. Visit angieslist. Com today. And tkind of like you huffing sometimes, grandpa. Well, when you have copd, it can be hard to breathe. It can be hard to get air out, which can make it hard to get air in. So i talked to my doctor. She said. Doctor symbicort could help you breathe better, starting within 5 minutes. Symbicort doesnt replace a rescue inhaler for sudden symptoms. Symbicort helps provide significant improvement of your lung function. 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And dont worry, this isnt coming out of the kids pocket money. Insurance will cover the damaged canvas. But not the wounded pride. Nick watt, abc news, los angeles. He didnt drop the drink. Thats all for us tonight. Have a good evening and thanks for watching. Ill see you tomorrow on gma. Many wrinkle creams come with high hopes, but hope. Doesnt work on wrinkles. Clinically proven neutrogena® rapid wrinkle repair with the fastest retinol formula available, it works on fine lines and even deep wrinkles. Youll see younger looking skin in just one week. Stop hoping for results, and start seeing them. Rapid wrinkle repair. And for dark spots rapid tone repair. From neutrogena®. We figure you probably dont have time to wait on hold. Thats why at xfinity were hard at work, building new apps like this one that lets you choose a time for us to call you. So instead of waiting on hold, well call you when things are just as wonderful. [phone ringing] but a little less crazy. Were doing everything we can to give you the best experience possible. Because we should fit into your life. Not the other way around. This is celebrity jeopardy please welcome our special guests. Hes a retired u. S. Navy captain who flew combat missions in the gulf war, is a New York Times numberone bestselling author, and was commander of Space Shuttle endeavors final mission. Heres astronaut. [ applause ] hes opinionated, ruthless, and one of north americas most successful entrepreneurs, yet he made his millions helping children learn how to read. From the hit tv series shark tank, please welcome mr. Wonderful. [ applause ]