Good evening. Tonight, new clues are ememergi from the wreckage after nearly 300 people were shot down out of the blue, in a devastating attack. Families, painting pictures of lives lost, including at least one american. But why was Malaysia Airlines flight 17 flying over a war zone in the first place . Abcs chief foreign correspondent, terry moran, is in ukraine where its already saturday morning. Terry . Reporter good morning, rebecca. From Eastern Ukraine. This is the city of kharkiv. This is where the bodies will be brought. This is where the families will come to collect their loved ones. 298 souls, who were just flying in the skies above this wartorn country, having nothing to do with it, when they were blown out of the skies. Their lives robbed from them. In the fields of Eastern Ukraine, the wreckage still smoldered. The dead were still uncollected. The heart rending personal items. A disney backpack. And the shock was fresh for local residents who witnessed the tragedy. There was a sort of explosion, this man said. And then, people started falling from the sky. They searched the sunflower fields. So beautiful. But today, littered with horror. At least one american is among the dead. A 19yearold with duel u. S. dutch citizenship, shown here with his girlfriend. He was on his way to meet his family for a vacation in malaysia. An avid soccer player, his former team reeling today. We can barely comprehend the news. President obama called the downing of Malaysia Airlines flight 17 within outrage of unspeakable proportion. Nearly 300 innocent lives were taken. Men, women, children, infants, who had nothing to do with the crisis in ukraine. Reporter he said a clear picture is emerging of what brought down the boeing 777 in Eastern Ukraine, near the border with russia. Evidence indicates that the plane was shot down by a surfacetoair missile that was launched from an area that is controlled by russianbacked separatists inside of ukraine. Reporter the president called for immediate ceasefire. And as the grim reality set in. New questions emerged. Should the plane have been flying over the region . How can we prevent this type of disaster from ever happening again . And was it an act of terror . Or a terrible mistake . I think its too early for us to be able to guess what the intentions of those who might have launched the surfacetoair missile might have had. Im sure this was not an intentional attempt to shoot down a passenger aircraft. Reporter how are things going there, one person asks. The response, we are 100 sure that was a civilian plane. At another point, this question theyre saying it says Malaysian Airlines. What was it doing on the ukrainian territory . The answer, then it was bringing spies. Why the hell were they flying . Theres a war going on. Yesterday, ukrainian president poroshenko placed the blame on russia. Today, president obama had this to say, noting that the rebels had boasted about shooting down military planes. A group of separatists cant shoot down military transport planes, or they claim, shoot down fighter jets, without sophisticated equipment and sophisticated training. And that is coming from russia. Reporter with a tenmilelong debris field, investigators begin the grim process of identifying and locating the bodies, hailing from 11 countries. The netherlands suffering the greatest loss, with 189 passengers onboard. We now know that awful number. 83 children onboard, including edie, otis and mo, traveling home with their grandfather to start school in australia. Their parents on vacation in holland. Their aunt writing on facebook, i will be miss you so very much. At least dad is looking out for you. The tragedy, nearly too much for samantha power, the u. S. Ambassador to the united nations, who spoke of the three babies among the dead, identified with a single letter on the manifest. As we stared at the passenger list yesterday, next to three of the passengers names, a capital i. The letter i, stands for infant. Reporter white flags over the debris field. They mark human remains. Abc news moscow correspondent, kirit radia, traveled to the crash site. Finishing the journey by car. We reached. We ran into a couple of Ukrainian Military checkpoints. They were checking documents thoroughly. They went through the trunk to make sure we didnt have weapons. They had tanks and automatic weapons behind barricades. Reporter air traffic routes over Eastern Ukraine are closed. Kirit arrived on the scene just before dark. This is where the bulk of the plane landed. You have landing gear here. Turbines in the back. And you see smoke coming out. This wreckage still smoldering more than 24 hours later. And the smell of burning jet fuel and death everywhere. Residents say this was one giant inferno after the crash. Reporter late today, an International Team of investigators arrived. But armed separatists stalked them as they worked. And the team said afterwards, they did not get proper access to the crash site. So, how did this happen . At the time of the crash, the route was open at higher lt tuesday, including at 33,000 feet where the plane was traveling. But it was closed at lower levels. The assumption by the airlines will be if the air space is open, its safe. Who should have stopped this flight and other flights from flying on this route is the question of the day. Its not as if people didnt know that airplanes were being shot down by missiles in this area. Reporter before the air space was shut down, 67 commercial airplanes had operated in that air space. Its quite likely that this plane could have been any airliner flying overhead. Any 1 of 700 airplanes that are flying over this route on any given day, which is what makes it so frightening. Reporter relatives gathered in amsterdam and kuala lumpur, waiting information on loved ones and world when they could travel to the crash site. Among the dead, aids researchers and health workers, headed to a conference. This incredibly sad and sensitive time, the iaf stands with our International Family and sends condolences to the loved ones of those who have been lost in this tragedy. Reporter an australian couple are once again mourning the loss of a loved one on a Malaysian Air flight. After losing their son and daughterinlaw, in the disappearance of malaysian flight 370 last march, the couple is now coping with the loss of their step granddaughter and her husband, who are among the dead on flight 17. Karlan, a 25yearold doctoral couldnt at indiana university, was on the plane. She was a decorated member of the varsity rowing team. Knowing her. Reporter her classmate also remembered her smile. She was always smiling. She was always positive. Reporter the fields of Eastern Ukraine are calm now. It is the calm of bewildering and senseless tragedy. And the dead who cry out from here for justice. For nightline, im terry moran, in kharkiv ukraine. Next, what are we learning about the criminals believed to be responsible for this act of terror . Celebrate your love of crab with gthis years largest variety . cause its crabfest at red lobster dig into a succulent selection of crab entrees. Like new crab lovers trio with sweet snow crab legs, split king crab, and jumbo lump crab over savory shrimp. Crab three ways all on one plate. Or try new jumbo lump crab over woodgrilled salmon. Experience crabfest at red lobster today. Only for a limited time. Come in and sea food differently intercourse thats painfulit. Due to menopausal changes. The problem isnt likely to go away. On its own. So its me we do something about it. 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If you suffer from constipation, you will likely also suffer from gas. Introducing new dulcogas, which starts working to eliminate gas bubbles in minutes for effective relief. Dulcogas, from the makers of dulcolax nothing relieves gas faster. President obama, today, called the shooting down of Malaysia Airlines flight 17 an unspeakable outrage. So, who are these separatists believed responsible for the loss of so many lives . New evidence is shedding light on the men behind one of the worst attacks in airliner history. And how they pulled it off. Heres abcs chief investigative correspondent, brian ross. Repter until they were accused of the atrocity that took 298 lives, the prorussian rebels in ukraine, had portrayed themselves as heros. They put up movielike billboards, promoting their cause. And photographers and reporters were invited to this recent wedding of one of the wounded fighters, whose bride also wore a gun over her shoulder. And among the honored guests was their top military commander, a russian, not a ukrainian, who uses the name, igor strelkov, which means igor the rifleman. He has a longstanding relationship with the russian intelligence services. With ties to the putin regime in moscow. Reporter strelkov says he is fighting so people in ukraine who want to be russian or independent can do so. But under strelkovs command, the separatist militia fighting in ukraine has become known as a ruthless gang of egotistical thugs, wellarmed and trained by the russians, according to u. S. Intelligence officials. Thats a core of the ukrainian separatist movements are people who are not ukrainian. They are russians. They are soldiers of fortune. Rambo types. They like to fight. They like to kill. And they are usually rewarded for that, very well, by the russian government. Reporter friday, as strelkovs rebels patrolled the crash site, they denied reports they were responsible for shooting down the Malaysian Air jetliner. Here is what we know. Reporter but the evidence gathered by the u. S. Continues to mount against them. Presented in its fullest form friday by the u. S. Ambassador to the united nations, samantha power. Separatists were spotted hours before the incident, with an sa11 system at a location close to the site where the plane came down. Reporter at the same time today, ukraine released this footage. It says shows the actual russianmade sa11 missile launcher that brought down the plane, near the scene, right before the strike. U. S. Officials believe the rebels shot down a cargo plane earlier in the week. But hit the wrong plane on thursday because they did not fully understand how to use the sa11 system. They made a mistake. And shot down what they thought was another ukrainian cargo plane. Reporter according to phone calls intercepted by ukraine, a separatist militant first reported the plane had been shot down. Are there any weapons, the person asks. Nothing at all. Civilian belongings. Medical scraps. Towels. Toilet paper. Told that the wreckage made clear it was a Malaysian Airliner. Another person answers well, then it was bringing spies. Why were they flying . Theres a war going on. In fact, thats a question many are asking now in the wake of the tragic incident thursday. At the time, passenger aircraft were permitted to fly over the combat zone in ukraine, as long as they were above 32,000 feet. Among the dozens of airlines that overflew the area in the last week, united airlines, lufthansa, virgin, klm and singapore airlines. Even after a number of military aircraft had been shot down by the rebels. All those airlines have stopped flying over the area now. Everyone associated with commercial aviation is taking a look, not just at the ukraine. But at iraq, afghanistan, any area where theres hostility and saying, is our idea that we can fly above hostilities and be safe is that accurate . Reporter aviation experts say, if nofly zones were declared in all of the worlds hot spots, air traffic into and through the middle east and southwest asia would become very difficult. As all of these airlines trying to reshuffle their routes and try to avoid, you know, areas of conflict, that may very well add distance to flights, which means burning more fuel, which means more costs. Reporter and other than air force one, few passenger jets are equipped with antimissile systems. Aircraft are vulnerable to attack within the plane, but also from the ground. Reporter our report on nightline ten years ago, featured a new system that could detect and deflect some lesssophisticated missiles. But the cost then was calculated at more than 1 million a plane to install. And even at that price, it was hardly foolproof. So, commercial aircraft today essentially fly unarmed, naked, against a threat that was considered highly unlikely until this week. Officials in the u. S. And ukraine say, the best defense is to bring to justice those responsible for shooting down malaysia air flight 17. I would say that this is very, very, very outrageous crime. And all those who commit that crime should be brought to justice. Reporter but that may be difficult. There are already indications a coverup could be under way. International investigators were kept from the accident scene. And today, ukraine officials released this video, showing what they said was a surfacetoair missile system, in the same area as the crash, being returned to russia, with only two of its four missiles still onboard. And no one seems sure, tonight, about the whereabouts of the jets black box, which the u. S. Has demanded remain at the site. But the rebels say they will send to moscow. Ukraine Officials Say the coverup is already under way. 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From your favorite restaurant to the local gas station, there are potential predators everywhere, devising ways to get their hands on your money. But what happens when we catch them redhanded . Tomorrow night on nightline prime, were turning the tables and showing you how to protect yourself. I just thought that maybe i had been blessed. It can take one phone call. The prize that youre receiving, maam, is 1. 2 million. I truly, truly was convinced. Reporter it could happen in your living room. They became my friends. They robbed you. Reporter or even in your church. How many of you want to get paid this morning . Raise your hand. This is your retirement . Yes. Its gone. Yes. Its gone. Reporter people anxious to get their hands on your money are everywhere. And now, as millions of summer travelers hit the road, beware. A new kind of thief could be stealing your hardearned money. I knew it was stealing. I knew it was wrong. Reporter youre witnessing a new breed of credit card thief caught on tape. This drive through attendant in florida is wiping each card twice. Once to charge for the food and again through something called a skimmer, which steals the card number, Expiration Date and information. Richard norris was the cards owner. You watch them use your card. I never paid attention to a skimmer being so small. Reporter but for norris, the worst part wasnt the money. It was the deception. I think thats what makes it worse. He actually made a point to, how are you doing . Good afternoon. Good morning, whatever the case would be. Always seemed to be smiling. He was making more than minimum wage. Reporter credit card skimming is becoming a national problem. Just ask Jeffrey Marshal of the Nassau CountyPolice Department in new york. A waitress in here was doing just that. Yep. Reporter how many cards did she get . 20, 25 cards. Reporter who is the person doing this one . A male individual. Reporter a twominute drive from your station, youve seen three different scores with scams . Yes. It can happen anywhere. Reporter now, electronic skimmers are so advanced they dont need a human to operate. Check out this crook modifying an atm in an convenient store. He places a card slot that contains a skimmer, over the real one. Will check it to make sure the card works. Reporter two occasions he walks up to that atm, puts on two devices. Youd never know. Thats correct. Reporter to protect yourself, check your account, a lot. Once you report loss or theft, the law says you have no additional responsibility for charges you didnt make. Tomorrow night, nightline prime is on the case, bringing you an hour, called catch me if you can, with more on the shocking summer scams. Tune in 10 00 p. M. Eastern right here on abc. Thank you for watching abc news. Tune in to Good Morning America tomorrow. And as always, were online at abcnews. Com. Good night, america. Hello. Raymond . 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