here's abc's david kerley. >> reporter: it sounds like something sci-fi. but nasa's mars orbiter has seen something only imagined. >> liquid water has been found on mars. >> reporter: the essential ingredient of life on the red planet. look closely. during the summer months, little riff ouellee rivelets develop. that scientists say is salty, even briny water which disappears in winter. billions of years ago mars had an ocean. was there life then? with this discovery is there life now? >> the discovery really is most exciting because it suggests that it would be possible for there to be life today on mars. >> reporter: it could also change a manned mission to mars. water on that planet means that astronauts, if they travel to mars, may not have to carry water and other resources. >> is this really a breakthrough for humans to visit mars? >> we could use that water, use that water to drink, of course. to break up into its parts. hydrogen, oxygen. breathe the oxygen. hydrogen/oxygen is a great rocket fuel. >> right now only rovers like curiosity are on the su

let's get right to abc's david kerley tonight. what do we know? >> reporter: we learned that three federal air marshals are being investigated. two for having sex with prostitutes. the evidence? video that they took on their government-issued cell phones. of course, air marshals are responsible for guarding flights in the air. we've watched them train in a simulator. this case expected to be part of a congressional hearing tomorrow. our abc station in chicago, wls has learned that all three air marshals are from chicago. they report that one air marshal has resigned. the two others are on leave. tsa telling us tonight, this is an ongoing investigation, it will not comment on the specifics, but says if criminal behavior or misconduct is substantiated, tsa will hold its employees appropriately accountable. >> all right, david kerley, thank you tonight. >>> to that troubling moment on the football field, making national headlines tonight. in new jersey, a high school player ripping off his opponents helmet and you're about to see for yourself what he

david kerley, abc news, washington. >>> what i find the most troubling some financial experts are saying this crisis could cause more harm to germany's economy than the greek debt crisis. >> oh, very well. because you know, volkswagen's sfok is down nearly 40% and other german automakers stocks are down, as well. we'll see how it plays out. coming up, do you have a dog or thinking of getting one? meet murphy and his favorite dog training expert. >> murphy, we love you. we have some tips to make it easier to have a canine best friend in your life. stay with us. >> those are some ears. >>> "world news now" continuest ♪ >>> so maybe you're a dog owner or maybe you're thinking about getting one or perhaps your kids are begging you for one. whatever the case may be, there's plenty of things to consider when you're having a dog with your family. here to help us sort it out is henry arden and her friend murphy. hello. >> thanks for having us. >> it's so great to have you here. what's the first thing you've got to know about house training? >> probably the thing people need to consider the mos

david kerley, abc news, washington. >>> some owners are demanding they get their money back for the cars they paid for. >> a lot of people are angry about it. ironically not only did the stock go down but other german automakers felt the pinch in the markets and bracing for the markets overseas this morning, as well. >>> so we'll see what sort of long effect this has. >>> okay. so coming up, we're going app to school. >> the new teaching tool to help parents know if their kids are acting up. but is it really working? you're watching "world news now." >> guaoo good album. >> now that the kids are back in school, many of us parents are wondering how they're doing throughout the day. >> yeah, and with the help of smartphone technology, teachers are able to keep parents up to date on their kids' behavior. but is it more of a distraction? abc's becky worley takes a look. >> reporter: recess ends at john green elementary cool? dublin, california, and miss career has to settle these fourth graders down. for that she uses an iphone and an app. a behavior tracking program called class doe joe let

david kerley covers aviation for us. >> reporter: passengers in wheelchairs with makeshift ice bags to their heads. 15 hurt when their a-340 hit that clear turbulence after leaving hawaii. "the plane suddenly dropped like this," this man says. "my head hurts because i flew up to the ceiling," says this woman who was sleeping and not wearing her seatbelt. the injuries were minor. but that's not always the case. this kind of turbulence is usually associated with storms. but the philippines airlines jet was hit by an invisible force. it's called clear air turbulence because pilots can't see it. it happens when a fast and slow moving jet stream pass alongside one another. the air between those streams is disturbed, and if a jet flies through, it can get very bumpy, very quickly. and radar can't detect it. a lesson learned by some of and bruises tonight. david kerley, abc news, washington. >> thank you frpts. >> now to the car maker potentially facing billions in fines. volkswagen, accused of deliberately changing air quality tests. now, recalling nearly 500,000 vehicles. >>> now to the sev

>> all right, david kerley in david, thank you. >>> when we come back here, there's news coming in tonight about caitlyn jenner. will she be charged in that deadly crash? >>> and the big announcement coming in from target. it's going to save you a lot of money online immediately. and here's the question. will other retailers follow suit? news... in multivitamin history. a moment when something so familiar... becomes something so...new. introducing new centrum vitamints. a multivitamin that contains a full spectrum of essential nutrients... you enjoy like a mint. new centrum vitamints. the coolest way yet... to get your multivitamins. hold the phone. because at&t and directv are now one! which means you can access your dvr at the dmv. change channels while he changes pants. you don't have to be a couch potato, you can be a train potato! and let them watch all the shows they love, inside the ride that you really kind of hate. p introducing the all in one plan. only from directv and at&t. the same hands. same eyes. same laugh. and since she's had moderate alzheimer's disease, i've discovered

david? >> david kerley in washington. david, thank you. >>> we turn now to the race for 2016 tonight, and to a feud reignited this evening. republican front-runner donald trump in a new fight with fox news, saying he'll boycott them because of what he calls unfair treatment. and now a new war of words with the network after one of their moderators was at the center of the last storm, megyn kelly. abc's tom llamas tonight with what fox news is now saying. >> reporter: tonight, dronld trump says he is breaking up with fox news and won't appear there for the foreseeable feature. >> the polls came out the other day. they were outstanding. fox didn't put them up. i didn't feel ill was being treated fairly. >> reporter: but in a statement, fox news saying they dumped trump. can receiving his appearance on kwl the o'reilly factor," implying that's why he's angry, and that his complaints are getting tedious. relations between the network and the candidate chilly since megyn kelly asked this question in the first debate. >> you've

here's david kerley. ï ¿>> reporter: it's called automatic braking. i'm going to play the distracted driver. if you aren't paying attention, a series of cameras and sensors are. and the car will automatically apply the brakes if you don't. we tested the technology when it was first being added to cars. and so i'm getting really close to this obstacle and it just takes over everything. that is striking. just amazing. technology that could be a game-changer in a common crash, the rear-ender. nearly one out of every three collisions. which is why tonight the government is applauding. ten auto makers, who make nearly 60% percent of all cars, they've announced they will make auto braking standard equipment in new cars. >> it could take us seven or eight years if we did this by regulation. they made the commitment today. a year earlier, five years, those translate to lives saved. >> reporter: if every car had auto braking, it's estimated 200,000 accidents could be eliminated each year. new technology, taking us a step closer to driverless cars. david kerley

thank you, david kerley, for that report. thank you for watching abc news tonight. tune into "gma" first thing in the morning. as always we're online 24/7 on all of our legendary racing heritage. all of our pioneering four wheel drive experience. come together in one amazing new vehicle. this is the all-new gle coupe. >>> a near disaster. an international flight having trouble in midair and quickly turning back to jfk and when the plane tries to land, a fire breaks out. good evening at 11:00. i'm bill ritter. >> and i'm sade baderinwa. a major scare onboard that flight to ireland tonight. you can see from the flight tracker aer lingus flight 110 made a big circle over long island before making the emergency landing. >> lucy yang at kennedy airport with the developing story. >> there was an emergency landing and plane fire here at jfk airport tonight. it involved an aer lingus flight to ireland, a boeing 757 flight number 110. >> reporter: the plane took off from jfk at 7:15 tonight, flying in to the sunset as seen in these photos from one of the passengers. the plan

abc's david kerley reports. >> reporter: after more than 100 deaths in cars with a defective ignition switch, tonight, gm criminally charged and admitting deceiving consumers. the ceo apologizing. >> we let those customers down in that situation. we didn't do our job. >> reporter: that defective switch meant cars could turn off on their own. and in a collision, airbags would not deploy. gm knew the switch was bad for years, but did nothing. can you characterize the criminal behavior of general motors? >> they didn't tell the truth in the best way that they should have, to the regulator and to the public, about a serious safety issue that risked life and limb for americans. >> reporter: for now, gm will not be prosecuted for its crime. it will pay a fine, $900 million, one of the biggest ever. also today, the carmaker agreed to pay $575 million to settle many lawsuits. now more than $2 billion paid out. one of the biggest ever by a carmaker. but at this point, no gm executive will be prosecuted. many families of victims, including the mother of amber rose, killed a decade ago at just 1

it checks out. >> for "nightline," i'm david kerley in washington, d.c. >> that's not a promo. >> i think it's a con-spiracy. the movie opens october 2nd and now we find life on mars? >> oh, look, look at you. i'm going to go with that's mars. >> i look so short today, like emmanuel lewis on mars. come on. >> was your muscle suit deflated that time? >> yesterday you had the muscles. >> i had the muscles. so now i'm -- >> the helmet was -- but you planted the "world news now" flag up there. >> webster. >> this is abc's "world news now" informing insomniacs for two decades. informing insomniacs for two two decades. ♪ bring us back from the brink of extinction. panda bear. bring us back from the brink of extinction. i am a ground squirrel bring us back from the brink of extinction. california condor . bring us back from the brink of extinction and desert tortoise.♪ >>> making news in america this morning, developing overnight a tropical storm forming, the east coast on alert as the system slowly churns in the atlantic, plus, severe flooding from another storm system in the south. we're t

david kerley, reagan washington airport. >>> bizarre interruption of a u.s. open tennis match in new york. a drone crashed into seats and broke into pieces upon landing. the match was briefly stopped as police examined the drone. one of the players says she heard the drone fly by. wasn't sure what it was. no one was injured. police are sti investigating. >>> it was truly frightening a scene here as jack sock collapsed during the fourth set of his match. witnesses say his eyes rolled back in his head. he's the latest victim of a heat wave that's gripped the entire open. the 14th player forced to leave the tournament early. a near record. sock was carried out of the stadium by trainers and security guards. fans gave him a standing ovation. i've always wondered, it's one of the worst times of the year to play tennis here in new york because it is so hot. it's always hot this time of year. heat strokes are a big deal at the open. >> slew. at soccer last year world cup they had to take breaks for that same reason. >>> now to a happy ending to a llama drama in okla

david kerley, abc news, new york. >>> more consumer news now. doritos is creating rainbow colored corn ships in support of the it gets better project. that organization helps gay lesbian and transgender youth who have been bullied. bags will be mailed to people who donate at least $10 to that organization. >>> so will that make doritos taste better is the question for you. doritos fan. >> i like doritos. i used to like getting them in my lunch perform. >> they're all right. we know dogs are called man's best friend. turns out at least one dog in washington state is clearly another dog's best friend. >> tilly is a setter mix and phoebe a basset hound were missing pore a week but they were together the whole time. >> tilly stood right with phoebe while she was trapped in a small reservoir that's built into the ground. look at this. tilly only left phoebe's side previously every day when she tried to get attention of humans who eventually brought phoebe to safety. >> look how happy they are reunited. >> >> they ran away several miles away from home

david? >> always important reminders. david kerley tonight. david, thanks. >>> and there is still much more ahead on "world news tonight" this thursday. tonight, the outrage and the sadness. two cases of children left in cars. the former judge now arrested for leaving her children locked in the car while she was in the courthouse. and the grandmother tonight who says she never knew her grandbaby was in the backseat. >>> also, an eye-opening medical headline this evening about losing weight. the window of time during the day when you should eat. how many hours of eating to lose the weight? >>> and you might remember that rocky landing, the wind shear. well, tonight, the new scare. one of the biggest jets in the world, trying to come in for a landing. a lot more news ahead here. we thought we'd be ready. but demand for our cocktail bitters was huge. i could feel our deadlines racing towards us. we didn't need a loan. we needed short-term funding. fast. our amex helped us fill the orders. just like that. you can't predict it, but you can be ready

abc's david kerley covers aviation for us. >> oh! >> reporter: the woman who forced this american airlines flight to divert to indianapolis did not go quietly, or without a fight. >> look forward. >> what do you mean, look forward? i have done nothing wrong. >> reporter: it all started on the miami to chicago flight with another passenger. >> she started kicking the seat of the passenger in front of her, and apparently, he turned around to complain and she hit him. >> reporter: just the start. when a flight attendant tried to intervene and calm her, the flight attendant became the target. >> she grabbed her by the face, kissed her and then punched her in the face. >> reporter: police also kicked and hit during the arrest. hollywood has used scenes like this to make us laugh. remember the bridesmaid? >> i'm ready to party! >> reporter: but this incident was no laughing matter. 25-year-old daniela velez-reyes of chicago is facing several possible charges and potentially federal violations of interfering with a flight crew. >> call my m

david kerley, abc news, washington. >> kaidavid, thank you. >>> and thank you for watching on a monday night. we hope to see you right back here tomorrow. ♪ wheel... of... fortune! ladies and gentlemen, here are the stars of america's game -- pat sajak and vanna white! hey, there, folks. [ cheers and applause ] how you doing? whoa, i almost turned too early. [ laug ] they need to write instructions on the ground for me. thank you, jim. thanks. hohow you doing? nice of you all to show up. appreciate that. everyone should have one of those devices in their hands as we get ready for our first "toss up." the category is "what are you doing?" ♪ [ bell cmes ] kenny. living the american dream.

david kerley, abc news, washington. >> david, thank you. >> now to the car maker potentially facing billions in fines. just one day after a landmark settlement with g.m. volkswagen, accused of deliberately software to throw off emission tests. the government ordering volkswagen to recall nearly 500,000 vehicles. >>> now to the severe weather this weekend. a tornado touching down south of chicago a short time ago. 10 million in the storm zone. flash flood watches in chicago as well. this time lapse, showing storm clouds over springfield, nebraska. powerful storms moving in. let's get right to rob marciano. >> all day long, the storms have been rumbling in that area. and more to come. flash flood watches in chicago, and back through kansas city. this is the current radar. let's roll through future radar. another couple of bouts of rain, maybe severe weather through chicago, rolling across lake michigan to detroit. it's a pretty strong front. the threat extending through kansas city and oklahoma city. >> rob, thanks. >>> we turn overseas to the humanitarian crisis in central europe. the worst s

abc's david kerley covers aviation. >> reporter: in video obtained by abc news, a female officer unseen manipulates a scanning machine so that travelers a male tsa officer found attractive would be sent over to him. he's seen inappropriately patting down those male passengers, at least ten cases over several months. the two denver officers fired in march, but not prosecuted. just last week, a tsa supervisor at laguardia airport allegedly fondles a young woman. that officer also fired, facing charges. all leading some to wonder if tsa may have to examine the way it screens its screeners. today the head of the tsa said employees are held to the highest standards. >> do these cases suggest that you have to change the way you screen to hire officers? >> i think what it suggests is that, uh, occasionally you have some bad apples in your employment. >> reporter: but it's not just tsa officers. look at this in san francisco. that is a civilian wearing a blue shirt, posing as a security officer, calling over two women, taking them into a small room for patdowns. 12 minutes go by. finally one of

here's abc's david kerley. >> reporter: nasa's mars orbiter has seen something only imagined. >> liquid water has been found on mars. >> reporter: the essential ingredient of life on the red planet. look closely. during the summer months, little rivlets, streaks develop 12 to 15 feet wide. a football field long. that, scientists say, is salty, even briny, water. and with this discovery is there life there now? >> it suggests that it would be possible for there to be life today on mars. >> reporter: it could also change a manned mission to mars dramatized in the new matt damon movie about a stranded astronaut. >> i am still alive, surprise. >> reporter: right now, only rovers like curiosity are on the surface of mars. but with the discovery of water, a human visit becomes a bit more of a possibility. is this really a breakthrough for humans to visit mars? >> we could use that water, use that water to drink, of course, to break up into its parts, hydrogen and oxygen. >> reporter: some of the ingredients, which could finally put a human on mars. and who knows what we might find then. david

david kerley, abc news, washington. >> kaidavid, thank you. >>> and thank you for watching on a monday night. we hope to see you right back here tomorrow. more kids are suffering from asthma and we still have no limits on carbon pollution which can lead to more asthma attacks in children but senator toomey has voted repeatedly to let polluters keep releasing unlimited carbon pollution into the air. and took more than one million dollars from the polluters. tell senator toomey to vote for the clean power plan, because unlimited pollution shouldn't be a right. but playing outside should be. ♪ this is "jeopardy!" here are today's contestants -- a law-school professor and administrator from brooklyn, new york... a technical writer from denver, colorado... and our returning champion, a paralegal from washington, d.c... [ applause ] and now here is the host of "jeopardy!" -- alex trebek! thank you, johnny.

david kerley live in our washington bureau. david, thank you. >>> we turn now to that abc news exclusive tonight. kim davis, the kentucky county clerk, jaked for refusing to issue marriage licenses to gay couples. rejoicing as she walked free, but tonight, facing the real possibility of going back to court. because this evening, some couples are now questioning the legality of the new marriage lie senses now that davis has removed her name. it could land her back in jail, and this evening, davis telling our own paula faris, she is prepared to go there, if necessary. >> reporter: tonight, kim davis is standing firm, still not signing those marriage licenses. though her deputies are. your name is not on those licenses. in your mind, are they still valid? >> they're not valid in god's eyes, for one. and you know, i think the authority -- i have given no authority to write a marriage license. >> reporter: to defend that principle, davis spent six days in jail. one of the voters who finally received a marriage license said that he f

david? >> david kerley in washington for us. david, thank you. >>> quarterback tom brady is back in the headlines tonight and back in court, fighting that four-game suspension, failing to reach a settlement with nfl commissioner roger goodell. the judge saying he will rule as early as tomorrow on whether brady will sit the bench for a quarter of the season. >>> there's still much more ahead on "world news tonight" this monday. the scare at the ballpark, the deadly fall. the fan plunging from the upper people. front of thousands of and the new concerns tonight about safety in the stands. >>> a quiz for you this evening, can you guess the best states in america for drivers on the roads right now, the cheapest car insurance and the safest driving. >>> tonight shark scares on two american beaches. the hammer head spotted circling two fishermen. a new sighting reported tonight. and the surfer who had a very close call with a great white. did you know that meeting your daily protein needs actually helps to support your muscle health?

david kerley, abc news, washington. >> david, thank you. and thank you for watching on a monday night. we hope to see >>> a up in of young swimmers left high and dry with a club. >>> a south bay dog trainer facing eviction. who is forcing him out? tonight he'll unleash a plea for help. >>> back to business in a town hit hard by the valley fire. what people are doing to try to get back to normal. >>> and we'll take a look at the tragic death of a motorist and why his family says it never should have happened. >>> sky 7 is over a popular swim and tennis club that will close doors next year so the owners can cash in on the bay area real estate boom. good evening. >> putting homes and apartments on the property will need city council approval and residents are trying to prevent the closure of subsport valley vista in walnut creek. >> reporter: well, this letter was sent about 11 days ago, announcing that the club would close in four months. members have done a number of things, they set up a facebook page, they're also now change.org and there

david? >> david kerley in washington, thank you. >>> pope francis back in the news tonight. this new image of the pope going out in rome to get a new pair of glasses for his trip to the u.s., telling the shop owner he didn't want to spend a lot of money. the image comes amid a new poll showing the majority of americans, 66% now, have a favorable or very favorable view of the pope. this week, our exclusive with the pope, telling us he's praying for americans and asking them to pray for him too as he prepares for his trip. tomorrow night here, our special, the pope, our virtual papal audience, with americans in three different cities, and our time inside the vatican. friday night at 10:00, a special "20/20." >>> there's still much more ahead on "world news tonight" this thursday. you will see the video here. we've all been on the highway with a swerving driver, but what do you do about it? the driver driving erratically, a father going off the road. tonight the video, the stranger trying to get to the keys and the baby. but a new warning, did he go too far. what would you do?

david kerley standing by. >>> the flash point. the refugee crisis. children hit with tear gas. families blocked at the border. what should these countries do? >>> and the hoax making global headlines tonight. president putin supposedly calling elton john. you will now hear

david kerley standing by. >>> flash point. the refugee crisis. children hit with tear gas. families blocked at the border. what should these countries do? >>> and the hoax making global headlines tonight. president putin supposedly calling elton john. you will now hear the call and the reaction tonight.

it checks out. >> for "nightline," i'm david kerley in washington, d.c. >> that's not a promo. >> i think it's a conspiracy. the movie opens october 2nd and now we find life on mars? >> oh, look, look at you. i'm going to go with that's mars. >> i look so short today, like emmanuel lewis on mars. come on. >> was your muscle suit deflated that time? yesterday, you had had the muscles. >> i had the muscles. so now i'm -- >> the helmet was -- but you planted the "world news now" flag up there. >> webster. >> this is abc's "world news now" informing insomniacs for two decades. >>> good morning. i'm kendis gibson. >> i'm kayna whitworth. here are some of the top headlines that we're following for you on "world news now." first of all, a rare face to face meeting with president obama and president putin -- squaring off, dueling speeches, stony glances and icy handshakes. both still far part how to end the blood shed in syria. details straight ahead. >>> donald trump's tax reform plan is being greeted with skepticism from many tax experts they say cutting taxes for middle-income americans will a