welcome to "world news tonight." breaking news. killed in cold blood. a sheriff's deputy ambushed at a gas station. authorities calling it an execution. the all-out search for this man. tonight, a suspect in custody. >> we need to bring this killer to justice. donald trump working the weekend, riling up the crowds, promising an answer to this big question -- will he run as a republican or go rogue? >> i think a lot of people are going to be very happy. fighter jets scramble to bring a plane down safely. an unruly passenger. so, what caused this mid-air scare? >> lady was freaking out about her cat. and, the big easy is back. new orleans, ten years after katrina. remembering the losses, but celebrating survival. tonight, the music goes on.

good evening. and thank you for joining us on this saturday. i'm cecilia vega. we begin tonight with that breaking news, an arrest in what police are calling an assassination of a sheriff's deputy. he was simply filling up his patrol car during his shift when he was ambushed. it happened at this chevron station outside houston. that deputy never even saw it coming. a shooter sneaking up behind him and opening fire. there he is, deputy darren goforth. a veteran officer, a husband and a father. and just a short time ago, the all-out manhunt leading to this man, seen on surveillance video. tonight, he is already facing the death penalty. authorities determined to see justice done. leadings off tonight from houston, here's abc's kendis gibson. >> six to eight shots and an officer is down. >> reporter: tonight, authorities in houston say they

have captured the man seen here, suspected of gunning down a houston area sheriff's deputy, execution style. >> we have identified the suspect responsible for this senseless and cowardly act. today, the district attorney's office has accepted capital murder charges on shannon j. miles. >> reporter: authorities say 47-year-old deputy darren goforth never had time to react, shot in the back overnight while simply filling up his patrol car with gas. >> suspect then continued over to him and shot the deputy again multiple times as he laid on the ground. >> reporter: the veteran officer and father of two died at the scene. >> this is not an incident where an individual was provoked by a confrontation with an officer. this is just, you know, a cold-blooded execution. >> reporter: his murder raising questions, whether anger over recent shootings by officers could have made his uniform a target. >> that does not mean that there should be open warfare declared on law enforcement. what happened last night is an assault on the very fabric of society.

it is not anything that we can tolerate. >> reporter: in louisiana, three police officers shot and killed just this month. this year turning increasingly deadly for law enforcement officers. the number of police officers who have died while on duty rising sharply this year. 73 officer fatalities in 2014. so far this year, it's up to 82. >> we've heard black lives matter, all lives matter. well, cops lives matter, too. so, why don't we just drop the qualifier and just say, lives matter? >> reporter: tonight, a growing memorial at the scene where deputy goforth was gunned down. the steady stream of visitors feeling a sense of relief tonight, knowing there's been a quick arrest. cecilia? >> relief and still so much heartbreak there. kendis, thank you. next, to florida, still in a state of emergency on the, fears of flash flooding from what was once tropical storm erika. so far, the storm has spared the sunshine state, but it left a trail of destruction as it barrelled across the caribbean, killing at least 20 people.

nearly 50 still missing. and tonight, the concern about the weather is shifting from the southeast to the northwest. abc's senior meteorologist rob marciano with the details. >> this is the front of the airport. >> reporter: tonight, officials in dominica, that caribbean country hit hard by tropical storm erika, now saying some communities no longer recognizable. the dominican republic walloped, too. more than $16 million in damage to crops there. in florida, residents near tampa bracing as remants of erika approach. >> anything that the water touched is destroyed. >> reporter: this man still repairing his home after record rainfall flooded it earlier this month. extreme weather on the move in other parts of the u.s., too. in central iowa, more than nine inches of rain falling friday. and in eastern washington, rare blinding dust storms near those fire zones. near tacoma, a father killed when a tree fell on his car. and winds gusting up to 60 miles an hour, tearing apart this tent

in seaside, oregon. >> and rob joins us now from marco island, florida, that's on the gulf side of the state. you've got some rain there, is that the remnants of erika? >> reporter: well, we're going to see more of this, certainly, cecilia, as time goes on. what's left of erika heading in this direction. and a lot of this state already has seen flooding this month. so, the western, the central part, that's where we're xt several days.ng here over the could see a half a foot of rainfall. also watching what is now a major storm, hurricane ignacio, category 4. you see that very distinct eye heading towards hawaii. it should stay north, but it is right on the edge of that cone and there are tropical storm watches out for the northern parts of the big island there. this storm in the pacific northwest will continue to bring wind and rain. several more pulses after the damaging winds went through there earlier today. we'll keep track of what's left of erika here in florida. cecilia? >> all right, rob, thank you. we turn now to the race for 2016. donald trump out on the trail and today, promising an answer and he's not the only candidate

making headlines. abc's devin dwyer has the latest. >> thank you. >> reporter: today, don naald tp campaigned in the country music capital. >> i love nashville. >> reporter: a rare stop in red state tennessee, with more tough talk on immigration. >> why can't our children that are in the country, why can't they be the dreamers? nobody ever talks about that. we talk about illegal immigrants, who, by the way, are treated better than our vets. >> reporter: trump greeted by protesters. one business asking trump to please leave soon. >> i'm getting the hell out of here. i'm going back to new york. do you mind? >> reporter: trump's rhetoric rubbing off on the other candidates. lagging in the polls, new jersey governor chris christie says immigrants should be tracked like fedex packages. >> we need to have a system that tracks you from the moment you come in and then when your time is up, then we go get you. >> reporter: trump going after a new target. hillary clinton's top aide, huma abedin and her husband, former new york congressman anthony weiner. >> she's married to a guy who obviously is psychologically disturbed. >> reporter: the clinton

campaign responding southwestly, safing "there is no place for patently false personal attacks toward a staff member." while mrs. clinton is back on vacation this weekend, trump is out in force, drawing donors and big endorsements, like this one from sarah palin. >> everything about donald trump's campaign is avant-garde and he is crushing it in the polls. >> reporter: trump still has not ruled out an independent run, if he loses the republican primary. but today, cecilia, he said he's close to taking a pledge that he will not, saying he thinks people will be very happy with his decision. cecilia? >> devin dwyer covering it off. thank you. we turn overseas now to europe's refugee crisis. tonight, the human toll mounting. hundreds of people crossing borders again this weekend, taking desperate risks for a better life. abc's chief foreign correspondent terry moran with some of those families tonight. >> reporter: razor wire failed to hold back the tide of humanity flooding europe. here, little children coming into hungary, 700 in one day. while the police here holler in

futility, "go back!" hundreds of thousands of people are now on the move. a river of refugees flowing from war and terror in syria and beyond. through turkey, greece, macedonia and serbia in the balkans. into hungary, then austria, germany and the rest of europe. they are risking everything. in austria, authorities now say 71 people, including children, died in that abandoned truck. four men arrested for trafficking, appeared today in court. and still they come. we met xainab walking with her boy on the road about a mile from the border. you want a beautiful life? >> i want a beautiful life for my son. >> reporter: she and her husband nahad are from gaza. their house was bombed in the war with israel last year. it's been a long journey. >> we left our home. we left egypt. we left greece. we left has done serbia.

>> reporter: he says he's walked so much, his shoe size has gone up. their little boy just can't go on. >> look at my baby, no? >> reporter: they still have such a long way to go. terry moran, abc news, on the hungarian/serbian border. and in thailand tonight, an arrest in that deadly bombing at a shrine. a foreign man taken into custody in an apartment near bangkok. authorities not saying where he is from, but inside that apartment, what police say was bomb-making equipment and stacks of passports. 20 people died in that blast. it was the most deadly attack in thailand's modern history. and in egypt, human rights advocates are outraged over three journalists sentenced to prison. a three-year sentence for reporters from al jazeera english, arrested nearly two years ago from broadcasting, quote, false news. amal clooney representing one of the men, a canadian national, saying she will now ask the egyptian president to pardon her client. and back here at home now, a

deadly accident on the racetrack in the headlines once again tonight. nascar star tony stewart striking fellow driver kevin ward last year. ward had walked onto the track after a crash. he did not survive. ward's family filing a civil suit against stewart, saying he needs to be held responsible. and now, for the first time, we hear his defense. abc's paula faris reports. >> reporter: tonight, race car legend tony stewart is fighting back against that wrongful death lawsuit. >> oh, he hit him! >> reporter: answering those charges on friday, stewart's attorney says his client was "not aware that anyone had excited their vehicle" and "did not see ward jr. or anyone else walking on foot on the track until just prior to contact." these new court documents filed in response to the civil suit from kevin's parents, pamela and kevin sr., who say stewart should be held responsible, despite a grand jury recently clearing the nascar superstar of any criminal wrongdoing. kevin's parents want stewart

held accountable for his actions. you don't think he was trying to kill him, you just think he was trying to intimidate him? >> i don't feel tony meant to kill my son. but his actions killed my son. i think he lost his temper. >> reporter: in stewart's response, his attorney argued that ward's death was caused by his own decision to exit his vehicle. and stressed that the 20-year-old driver was under the influence of marijuana at the time. but the ward family attorney hitting back overnight in a statement to abc news, saying "the callous comments are sad. the race was under a caution flag. stewart revved his engine and ran over the young man five other drivers had missed." one year later, the ward family is still reeling from their son's death. >> it's devastated us. we're still struggling to get through every day. >> reporter: paula faris, abc news, new york. we turn next to new orleans. hurricane katrina hitting ten years ago today. and we all remember images like this one right here behind me. homes flooded as far as the eye can see.

well, tonight, the city is remembering what happened, but it is also celebrating how far it has come. abc's bob woodruff reporting in from new orleans. ♪ >> reporter: this morning, singing and dancing. from the ninth ward of new orleans to the gulf coast, a celebration after ten years of survival. >> we need help! >> reporter: more than 1,800 people were killed when katrina struck. 80% of new orleans flooded. one of the saddest things i saw ten years ago was on this corner, where john lee shoveled and wept, working alone to bury his neighbor whose body had lain on the sidewalk for five days. >> you need to go. please go. >> reporter: now he has built a shrine in her honor. >> it was my conscience that made me come and ask permission to bury her. i just -- some things in life that must be done. >> reporter: from the convention

center to the superdome, the people of new orleans looked like refugees. including erika harris, a 10-year-old girl frightened and hungry. you getting water and food or anything like that? >> i'm not drinking that water. that water is hot. >> reporter: this week, we found her in houston, now an honor student in college who volunteered to help others in haiti and wants to become a minister when she graduates next year. >> i feel like all these events have shaped me and -- for the better. and i'm able to minister and to talk to people. i know what it's like, or, i've been there. >> reporter: more than half of the people from here fled. fortunately, today, the population has grown again, regaining more than 90% of what it once was. the big easy has gone through ten years of suffering, but today, the people here are marching again. ♪ now, you can see that the celebration is continuing late into the night.

i should tell you that three presidents have already participated in all of this. obama and bush the first couple of days, and tonight, it will be bill clinton's turn. cecilia? >> and we are celebrating with the big easy tonight. there is much more ahead on "world news tonight." coming up next, fighter jets scramble to escort a flight from las vegas to germany. what triggered this hair-raising scare that forced the flight to make an emergency landing in denver? you will not believe this one. and they look like ordinary sunglasses. so, why are they bringing some people to tears? seeing is believing. [ starter ] ready! [ starting gun goes off ]

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or does not go away. stop toe tucking... and get the drop on toenail fungus. ask your doctor today about kerydin. r minor arthritis pain. plus, just two aleve can last all day. you'd need 6 lenol arthritis to do that. aleve. all day strong. a flight from las vegas to germany is about to take off once again tonight after some frightening moments in the sky. two fighter jets scrambled, escorting the plane to an emergency landing in denver. so, what caused all this commotion? as abc's ryan owens reports, this time, it wasn't just an unruly passenger.

>> reporter: since 9/11, fighter jet scramble to escort airplanes when the flight crew thinks there's threat onboard. but you've never heard one like this. it's the tale of this woman and her cat. >> felt like it was out of a movie, i mean, a lady was freaking out about her cat. >> do you need any assistance at all? >> just the gate. >> reporter: the woman, who has not been identified, was escorted off a las vegas to germany flight after it made an emergency landing in denver friday night, complete with those fighter jets. why? a passenger tells us the woman was angry and making threats after the flight crew locked her cat in a bathroom because she boarded with the animal in her purse and not a pet carrier. >> before we took off, i saw her running down the aisle towards the cockpit, because she wanted to talk to the captain and complain that the flight attendant put her cat into the restroom. >> reporter: the german airliner condor will only say they landed because of a passenger's

"inappropriate behavior." the fbi tells abc news she is not facing any charges and calls this a "misunderstanding." it's also a major inconvenience for hundreds of passengers who had to spend the night in denver. their flight not scheduled to leave until 8:00 tonight. cases of unruly passengers seem to be taking off. more than 28,000 worldwide since 2007. like in russia, when a drunk passenger threatened flight attendants. a group of men wrestled him to the floor, tying him up with seat belts and tape. and tonight, clawing her way onto that list -- this woman and her cat. ryan owens, abc news, los angeles. still ahead on "world news tonight," nine days lost in the wilderness. a missing hiker found alive. why did it take so long for rescuers to find her?

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straight now to the index and a hiker in california missing for nine days has been found alive. a helicopter rushing her to the hospital. the woman was on a hike with the sierra club last week when she disappeared, but a massive wildfire nearby kept a rescue chopper grounded, delaying the search. and next, to a priceless view for the color blind. watch. they try on new color-correcting glasses, and for the first time, they can see the true shades of red, orange, green and blue. the sight bringing people to tears. some learning for the very first time that peanut butter isn't actually green. and the queen of television in a movie about the king of comedy? oprah winfrey reportedly taking a role in an upcoming bio-pic about richard pryor.

she'll play pryor's brothel-owning grandmother. eddie more murphy will play pryor's father and kate hudson, his widow. production begins next spring. and when we come back, as katrina stormed in, the musicians poured out. but ten years later, in the very birthplace of jazz, how music is writing a new verse for the big easy. before i had the shooting, burning, pins-and-needles of diabetic nerve pain, these feet... ...served my country... ...carried the weight of a family... ...and walked a daughter down the aisle. but i couldn't bear my diabetic nerve pain any longer. so i talked to my doctor and he prescribed lyrica. nerve damage from diabetes causes diabetic nerve pain. lyrica is fda-approved to treat this pain. lyrica may cause serious allergic reactions or suicidal thoughts or actions. tell your doctor right away if you have these, new, or worsening depression, or unusual changes in mood or behavior. or swelling, trouble breathing, rash, hives, blisters, muscle pain with fever, tired feeling, or blurry vision.

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>> reporter: in this city, the music is in their souls. ♪ as katrina flowed in, musicians poured out. thousands of instruments destroyed in the floods. ♪ everybody sing ♪ what a wonderful world >> reporter: but slowly, in the big easy, where jazz once began, the tones came back. ♪ on the streets and in the bars. ♪ ten years ago, people sought refuge in the superdome, but 13 months later, they returned. u2 and green day came to play. ♪ the saints are coming ♪ the saints are coming >> reporter: and katrina and its destruction had become part of the lyrics. is there much music about katrina? >> there is. there's a ton. there's a ton. >> reporter: like what? >> al carnival time johnson is a

local r & b artist who wrote a song called "the lower ninth ward blues," that's really great. ♪ i don't know which way to go ♪ because my home is not there anymore ♪ >> reporter: the wind and the water of katrina did hurt this city. but it could not silence the sounds. ♪ this little light of mine ♪ gonna let it shine >> reporter: bob woodruff, abc news, new orleans. ♪ i'm gonna let it shine >> and the band plays on. thank you for watching. "gma" and "this week" in the morning. we will see you right back here tomorrow night. i'm cecilia vega in new york. have a great saturday. good night.

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