Ending neither could have imagined. Good evening. Thank you for joining us on this saturday. Im cecilia vega. And we begin with that deadly train crash in philadelphia. Investigators saying tonight the trains windshield may have been hit by an object shortly before it derail and now this troubling possibility. Three different trains just a few miles apart all hit by objects all within just a few minutes of each other. Heres amtrak 188. Investigators focusing on the small hole on the right and this, a different train, also struck in the windshield, here another amtrak passenger train a Passenger Car hit. The fbi is involved and so many questions tonight. And abcs phillip mena tackling all of those questions. He leads us off from philadelphia. Reporter the knick looking at this damage on the front part of the windshield amtrak 188 and if theres any link between similar damage on two other trains the same night of the derailment that killed eight passengers. Theres particular damage we want them to look at for us. Reporter an amtrak conductor weighing in tonight. There had to be impact to get that kind of damage. Weve had our trains stoned before. All kinds of stuff happens on the northeast corridor. If you name it ive seen it. Reporter first report of a projectile coming from a southbound amtrak on the ocella line. We got hit by something too. Thats really train. Reporter minutes later a local commuter train is also struck by an object. The impact on that local train here on these tracks so severe, they were forced to make an imagine stop. Reporter around that same time 188th engineer Brandon Bastian was overheard saying his train was also hit by something. At 9 28 the fatal derailment. The big question, even if something hit this train. Could it have caused 188 to accelerate to twice the speed limit so fast that it flew off the rails . Two possibilities. One is the projectile damaged the train so it started to speed up on his own or the engineer was hurt and he couldnt slow it down. Reporter tonight federal rail safety regulators instructing amtrak to employ technology that could have prevented this accident. Right now theyre examining the wreckage, and depending what they find this could turn into a criminal investigation. Cecilia . So many questions still. Phillip, thank you. And next, another developing story. U. S. Commandos taking out a senior isis leader. Tonight, terry moran with details on that raid and what American Forces found that could unlock secrets about this terror group. Reporter the daring raid happened overnight. Elite Delta Force Troops taking off from iraq aboard blackhawk helicopters and v22 ospreys headed deep into syria. Their mission, capture and interrogate abu sayyaf, a key isis leader, according to us intelligence, the top money man, in charge of isiss multimilliondollar blackmarket oil and gas sales. This is not just another person. The Revenue Streams are extremely important for their survival. Reporter a Counter Terrorism official tells abc news sayyaf is the isis leader who gave kayla miller killed in syria in february as a forced bride or slave. On the ground at his house, a fierce fire fight. Isis defended the building using women and children as human shields. At time it was so close. It was handtohand fighting. He was killed along with a dozen fighters, his wife, held and captured for questioning. All american personnel returned safely after scooping up Laptop Computers that could be an intelligence windfall. All in all, a significant success. Should have a large psychological impact with ice that is we can do raids whenever we want and take out key leaders when we want to do it. Reporter isis has been making gains in iraq and serious, but this raid wont reverse those gains but might make isis leaders sleep a little less easy tonight. Terry moran, thank you. And back here at home to the dangerous weather moving across the country. Millions of americans in the threat zone this weekend. Take a look. This dark sky part of the storms rolling through big springs nebraska and this big rig in west texas, barreling down the road in hef rain hazard lights flashing. But this suv no match for that texas hail. The driver pulling to the side waiting for that storm to pass. But the biggest threat tonight, tornado watches up through four states at this hour. Abcs senior meteorologist rob marciano is chasing those storms tonight. Reporter tonight the heartland chase preparing for another battering of severe weather. In Oklahoma City the billboards saying dangerous storms on the way. This system bringing golfball sized hail to nebraska overnight. Rain turning city streets into rivers. Dangerous flooding out west, too. In california, this driver trapped. Rescuers using a boat to reach him. Ten tornados reported in the last 24 hours including two near torington, wyoming. Damaging building overturning trailers and downing trees. After a slow start, we had 180 tornadoes in the last two weeks. Rob joins us now. Rob joins us now from tornado alley. Rob, youve been out there chasing the storms all day. What are you seeing . Theyre just getting going as a big system comes out of the rockies they continue to initiate. Were watching across the texas border, theyll continue to develop as we go through the next hour. One or two may drop tornadoes. Were chasing with a team in the storms prediction center. The guys responsible for putting out these forecasts. Tornado watches. A slew of them are out tonight. Really right through the heart of tornado alley, and the risk will get further east and into more popular areas. And as nightfall comes so does even more danger with these storms. Tomorrow the less likelihood for a tornado but severe risk in places like milwaukee, chicago and minneapolis. A lot of rain the past week with these cells. Flash flood watches from texas through oklahoma. One thing for sure, cecilia it will be a turbulent night of it sure will be. Rob, thanks. Now to a terrifying moment as a city bus stuck on the tracks. As a cargo train barrels toward it. Passengers pan iing. Heres bazi kanani with the crash caught on camera. Reporter this city bus stuck in atlanta track on railroad tracks. Trains coming reporter passengers warn the driver, then, start running. Up front, the frustrated driver is honking to get a red suv in front of him to move forward. No time. The driver tossed from his seat. Other cameras showing the passengers barely escapeing. One man struck by the bus door as the train strikes, throwing him to the ground. Another woman, seen here limping away from the bus. In this case, all onboard that marta bus walked away. Six injured as the Freight Train clipped the back of the bus. One of them calling his mother for help. He said he told the bus driver, the train is coming, the train is coming, and it hit him. Reporter that bus driver on leave from the city tonight. Investigators also want to find the driver of the red suv that stopped in front of the bus. The railroad, csx, says crossing gates and warning lights were working. Bazi kanani, abc news, washington. And staying in washington, d. C. And that mansion fire that killed four people. Tonight, the mystery deepening. One woman who said she was supposed to be at the house that day now said she received an unusual text message telling her to stay away. Heres abcs gloria rivieria. Reporter tonight, arson investigators and dc police are back at this burnedout mansion, searching for clues. The fire appears to have been intentionally set. Reporter this tightknit, affluent and wellpatrolled community grieving the sudden, grisly murders of a wellliked family. Savvas savopolous, a leading ceo in the iron industry, his wife amy, their young son and family housekeeper. Ive been here for 25 years. Nothing like this ever happens. Reporter thursdays time line. At 9 56 a. M. , a woman who says she worked for the family told wjla she received an unusual text from amy telling her to stay home. I dont understand why. Reporter around 10 30 the family porsche is spotted at the house. But by 1 30 p. M. Reports of fire. There were injuries appeared to be blunt force or sharp object injuries. Reporter that porsche later located in this Maryland Church parking lot torched and abandoned. Police say they have a lot of video to review but there are no specifics whether that means security cameras from within the familys own home. They are also looking into who drove that porsche and who might have gotten in easily. There were no signs of forced entry. Cecilia . Gloria thank you. Now the race to the white house. Hillary clinton releasing details about income in a Campaign Finance report. She and husband bill clinton earned 25 million since 2014 delivering more than 100 paid speeches. The former secretary also collected more than 5 million in book royalties. That puts the clintons in the top onetenth of 1 of all americans, making Hillary Clinton the second wealthiest candidate behind republican carly fiorina. A popular shirt making doing an about face. This is the shirt four men hoisting a basketball stand. But that reminded many of the famous ewoeiwo jima memorial. Tonight that shirt off the market. Heres ron claiborne. Reporter it was a marketing idea gone badly awry. This tshirt, made by under armour, with an image very similar to the famous photo of marines raising the flag on iwo jima in world war ii. Four athletes hoisting a basketball backboard and hoop. Hundreds of people took to social media to express their outrage seriously, very offensive said one message on signed marine corps veteran. Another, this shirt is blasphemy. It is a spit in the face to me and my marines. Today, under armour announced it would pull the tee shirts. In a statement, under armour said, we deeply regret and apologize the release of a shirt that is not reflective of our commitment to support and honor our countrys heroes. Part of you wonder how does it possibly come up with the checks and balances . Reporter in fact, under armour has a long record of support for the military. A partner of the Wounded Warrior project. Good deeds now tarnished in the eyes of some by what they say was exploitation of a sacred patriotic image. Ron claiborne, abc news, new york. And next to the sale of counterfeit goods. What our yearlong investigation uncovered. You may very well have fakes in your house. And not even know it. Tonight, our own david muir. Inside the secret warehouses of this trillion dollar a year industry. Showing us the tricks those vendors use and what you need to look out for. Reporter inside this building in newark, new jersey, 30 minutes outside new york city, we see them. Were about to fly you right over the mountain of boxes. Stacked four, five boxes high. Inside, investigators say, countless counterfeits. Many of these products end up in medicine cabinets in homes across america. Exactly, right david. Reporter this looks exactly like the crest youd get at the supermarket. At a glance it looks like the real thing. But, it is counterfeit. We have found trace quantities of antifreeze. Reporter where is this toothpaste coming from . China. Reporter and its money on American Products going straight to the chinese. Exactly right. Reporter and tonight, the number one piece of advice they say if youre buying toothpaste or another product at a deep, deep discount, you should always beware. The agents going box by box. They allow us to start opening, too. There is hours of opening boxes here . It is. You dont know what chemicals were used in the making of this product . Exactly. Look at the trick revealed with these boots. Nondescript, generic brand, mega gear reporter but we notice something. On the sole of the boot, a rubber piece added to hide something. This one piece affixed right here but if you peel that away, youll see that it has the timberland brand underneath. They were just hoping to get it here, rip off that piece of rubber and sell it as the real thing. Reporter so once they arrive at the store, they can take this off . Exactly. Reporter and sell it as a timberland boot. One small victory for the army of counterfeit investigators who work this every single day. Our thanks to david for that report. And we have much more ahead on world news tonight. Up next, rental nightmare. What an airbnb ten dant did to one home owner and the lesson for anyone looking to turn their home into a shortterm hotel. And hitting the road what you need to know about gas prices before you plan that summer vacation. Why pause a spontaneous moment to take a pill . Or stop to find a bathroom . Cialis for daily use, is approved to treat both erectile dysfunction and the urinary symptoms of bph, like needing to go frequently, day or night. Tell your doctor about all your medical conditions and medicines, and ask if your heart is healthy enough for sex. Do not take cialis if you take nitrates for chest pain as it may cause an unsafe drop in blood pressure. Do not drink alcohol in excess. Side effects may include headache, upset stomach, delayed backache or muscle ache. To avoid longterm injury, get medical help right away for an erection lasting more than four hours. If you have any sudden decrease or loss in hearing or vision or any symptoms of an allergic reaction stop taking cialis and get medical help right away. Ask your doctor about cialis for daily use and a free 30tablet trial. The off outdoor refresher course. Sunsets. Sfx ding hello you. And you too. Meet outside. Where the golden hour is approaching along with the buzzy sucksquad. Sfx buzz its been a while. But, you can do this. Step 1 open door. Sfx ding step 2 activate off clipon. Sfx ding mosquito protection you dont spray on. Sfx ring radial sound step 3 ahem face west. Sfx birds chirping get back out there. With off clipon. Keep bugs off. Sfx thwack sc johnson, a Family Company and next to a warning about a growing trend for American Families earning extra cash by renting their home on a popular website. Tonight one woman couldnt get renters to leave. Heres abcs Kendis Gibson for what you need to know before opening your home to strangers. Reporter this is what one California Home owner called a living nightmare. Watch as this couple rome roams the santa cruz house, rummageing through the ridge straight and cabinets the home owner standing on the side helpless. The 33yearold rent her master bedroom to this couple last month. Weeks into the contract agreeing to transition to a cashonly payment not involving airbnb. Thats when the payments started coming. So i asked them to go. Did they go . They did not. Reporter surveillance cameras learning as the duo is served legal papers but they refuse to leave. The shirtless male seen creeping through the home at night. California law finds the tenant 30day notice because they have to find a place to live. And some tenants are using that to their advantage. Reporter this nightmare is finally coming to an end, but it was costly. She paid them to get the pair to leave the house figuring its less than a lengthy eviction process. Nightmare . Absolute nightmare. Reporter Court Documents indicate this same couple has an ongoing claim against them for not paying rent elsewhere. Now airbnb saying we strongly encourage hosts to only book through airbnb. They may change policy for anyone that extends the reservation, encouraging those renting out their homes to do background checks. Kendis gibson santa cruz, california. And still ahead on world news tonight, you know who this is. Its the 2015 Billboard Music awards. The young stupor star honoring women who are changing the face of the music industry. So i asked my doctor about victoza. He said victoza works differently than pills and comes in a pen. Victoza is proven to lower blood sugar and a1c. Its taken once a day, any time. And the needle is thin. Victoza is not for weight loss but it may help you lose some weight. Victoza is an injectable prescription medicine that may improve blood sugar in adults with type 2 diabetes when used with diet and exercise. It is not recommended as the first medication to treat diabetes and should not be used in people with type 1 diabetes or diabetic ketoacidosis. Victoza has not been studied with mealtime insulin. Victoza is not insulin. Do not take victoza if you have a personal or Family History of medullary Thyroid Cancer multiple endocrine neoplasia syndrome type 2, or if you are allergic to victoza or any of its ingredients. Symptoms of a seriou a ictoza including inflammation of the pancreas pancreatitis which may be fatal. Stop taking victoza and call your doctor right away if you have signs of pancreatitis, such as severe pain that will not go away in your abdomen or from your abdomen to your back with or without vomiting. Tell your doctor about all the medicines you take and if you have any medical conditions. Taking victoza with a sulfonylurea or insulin may cause low blood sugar. The most common side effects are nausea, diarrhea, and headache. Some side effects can lead to dehydration, which may cause kidney problems. If your pill isnt giving you the control you need. Ask your doctor about noninsulin victoza. Its covered by most health plans. [ male announcer ] you wouldnt ignore signs of damage in your home. Are you sure youre not ignoring them in your body . Even if youre treating your Crohns Disease or Ulcerative Colitis an occasional flare may be a sign of damaging inflammation. And if you ignore the signs, the more debilitating your symptoms could become. Learn more about the role damaging inflammation may be playing in your symptoms with the expert advice tool at crohnsandcolitis. Com. And then speak with your gastroenterologist. Incredible ive been claritin clear for ten days. When your allergy symptoms start, doctors recommend taking one claritin every day of your allergy season for continuous relief. With powerful 24hour, nondrowsy claritin live claritin clear. Every day. And straight now to the index. And just in time for the Summer Travel season, some good new for you. Gas could be the cheapest its been in six years. Experts predict the average American Household will spend 675 less at the pump this year, but, yes, there is a catch. Sorry. That could mean some pretty crowded freeways come memorial day. And next to a shot that had crowds at a basketball game floored . What is better than a threepointer . This at the nba playoffs, league mvp