Nightmare . The 911 call about a plane crash that never happened. The man later claiming it was a sleeping pill what lugs nation. Good evening. And thank you for joining us tonight, as we head into this fourth of july weekend. There are warnings of extra vigilance and increased security in Public Places all across the country. Airports are on high alert, after that attack in istanbul. This is the scene in atlanta today. Heavily armed police on patrol. And here in new york, officers in Tactical Gear with a watchful eye on the flood of visitors headed into the city. And the highways will be crowded from coast to coast this weekend. Severe weather warnings also in the forecast. This Storm Brewing near st. Louis, missouri. Abcs david kerley starts us off tonight, as millimeter americans are on the move. Reporter heightened security tonight in some major aports across the country. In atlanta, more officers, more guns, and a major who says hes going to push security beyond the front door of his airport. I cant discuss what we are doing to harden the perimeter of hartsfield jackson, but what i can tell you is that its substantial and its serious. Reporter that, after instanbul, the second deadly overseas airport terrorist attack in three months. The question tonight will other cities follow atlanta . Because at nearly every american airport, there are few visible signs of security approaching the airport. And only a few that use checkpoints. Los angeles, one of the airports doing so. All this, as a Record Number of travelers are taking to the skies. More than 2. 5 million will fly tomorrow alone for the holiday. Ive definitely seen more police. I was much more aware and much more concerned. Reporter while there is plenty that is visible this weekend, there is a lot going on behind the scenes. There are going to be Undercover Police officers also, officers trained in behavioral analysis, looking for any sort of suspicious behaviors. Reporter security extended for the holiday to train stations, too, and other transit hubs. But the majority of americans traveling for the fourth, 84 , will be driving. One estimate suggests a record 36 million will be behind the wheel. The tsa is also redeploying what it calls viper team, visible protection teams. They include behavior and explosive experts. Theyll be out where people can see them, cecilia. Okay, and that warning to be vigilant. David, thank you. And at this hour, 10 million americans are in the path of severe weather. Some fierce storms in the past 24 hours, including two reported tornadoes. One of them touching down here in western iowa. Monsoon storms have been battering the southwest, too, destroying farm sheds and a roof ripped right off a home outside phoenix. Abcs senior meteorologist rob marciano is trackin its going to be a rough weekend ahead for so many . Reporter well, cecilia, the same areas that are getting hit now will probably get hit again, at least for part of the weekend. Well start with the monsoon in the southwest. Las vegas, severe storms romming through that area. An inch of rain falling in 15 minutes. Flooding in some points. In phoenix, just outside of there, 70mileanhour wind gusts yesterday. The midsection of the country, flood watches there. Weve got a front thats coming through tonight. Chicago, you get some storms here in the next few hours, it pushes plus indiana and ohio. And by 8 00 tomorrow night, strong to severe storms right along the interstates of the northeast. And that is right during the peak travel time of this holiday weekend. Cecilia . So many teem getting ready to leave right now. Rob, thank you. We do want to move on now to chilling new details in that terror attack in istanbul. For the first time, we are seeing the faces of the three men behind the massacre. This image showing them smiling, molts before the attack. And we now know they were staying inside this apartment building, where behind this steel door, authorities suspect they were making bombs. Abcs chief Foreign Correspondent terry moran is in istanbul tonight on that trail of terror. Reporter new Surveillance Video from an airport kiosk shows the moment the panic set in. People scrambling for cover. A few seconds later, a gunman enters, stalking those in hiding. Minutes before they unleashed this terror, security cameras capturing this chilling new image of the three attackers. They were smiling. Turkish officials today said they were foreigners from central asia. Kyrgyzstan, uzbekistan, and dagestan, in russia, all rich recruiting grounds for isis. We went to the istanbul neighborhood where the attackers rented an apartment and plotted for 33 days. This is where the attackers were living, up on the second floor here. Its a working class neighborhood, religiously conservative. They kept a very low profile. But inside, neighbors were suspicious about what wasoi door. One of the neighbors told us that on sunday nigh, just two days before the attack, the chemical smell from there, like paint thinner, she said, was so strong that she and other neighbors called their landlord to come play. Out back, we met salih elsan, who told us the men wore baseball caps whenever they went out, avoiding eye contact in this tightknit neighborhood. I saw them looking out from behind the curtains, he says, but they never showed their faces. So, you think they were professionals . Yes, absolutely, he said. Today, there were funerals across istanbul. The death toll now at 44. Turkish Security Forces launching 16 raids, 13 terror suspects arrested. This, just one battleground in the war against isis. On another, 1,000 miles away in fallujah, iraq, there were progress. Massive u. S. Air strikes backing up iraqi forces, shattering isis positions and destroying many vehicles. But s american officials believe that as isis loses ground in iraq and syria, it brings the war home to civilians here in turkey and in the west. Cecilia . Okay, terry, thank you. And back here, it was a tense scene at a military base just outside washington today. There you see it. Staff with their arms up, evacuating a building at joint base andrews, after reports of an active shooter. Well, it turned out there wasnt one. An armed inspector mistaken for an intruder. Adding to the confusion, the alert happened just before the start of an active shooter drill. And next, to the race for the white house, donald trump revealing a new detail about how he would take on isis, saying he prefers to keep his plans secret from the enemy. But he does want nato to play a much bigger role. Also tonight, why trump is targeting bill clinton. Abcs tom llamas, oneonone with the candidate today. Reporter tonight, donald trump accusing attorney general loretta ethical breach after she met with president bill clinton on the tarmac of a Phoenix Airport for 30 minutes. Lynchs Justice Department still investigating Hillary Clintons use of a private email account. Who would think that when you have this massive investigation going on on emails, which is so serious, theyd have a meeting like this . So, i was very surprised. Reporter aides to bill clinton and lynch say it was a chance meeting, and they were simply exchanging pleasantries. Our conversation was a great deal about his grandchildren. It was primary social and about our travels. He mentioned the golf he played in phoenix. Reporter the conversation, she insists, all personal, no business. There was no discussion of benghazi, no discussion of the state department emails. Reporter i asked trump about that in New Hampshire today. Do you take president clinton at his word that that meeting was to be polite, that it was sincere, just to say hello . Well, when you meet for a half hour and youre talking about your grandchildren and a little bit about golf, i dont meeting. It was a very sad situation to see, tom, that i can tell you. Reporter i also pressed trump on what he would do to fight isis. Hes been reluctant to outline a plan, saying he doesnt want to show his hand to the enemy. Your first time politician, this will be your first time in public office. What can you tell voters to reassure them that you have a plan to take out isis . Were going to hit them very hard. Its very true. Its very, you know, possible, that we should use nato. Reporter so, youre saying use nato troops to take out isis . I like the idea of using nato and also neighbors that arent in nato to take them out. You got to take them out. Reporter trump, for months, has trashed the Nato Alliance as obsolete, even raising the possibility its outlived its purpose, but now, he says its nato troops that could be the best tool to fight against isis. U. S. Special forces . I dont want to get too much of ours involved. I want nato to be involved. We spend a tremendous amount of money on nato. But we have to do something to take out isis and we have to take them t from New Hampshire. Tom, so far, no comment from Hillary Clintons campaign on that meeting between her husband and the attorney general. Donald trump sure had a lot to say about it with you today. But what is he saying about the buzz over a possible running mate tonight . Reporter cecilia, donald trump has told me that hes narrowed his ligs of potential running mates and tonight, multiple sources tell abc news that new Jersey Governor Chris Christie is being vetted. Both men are very close and christie has become one of trumps closest advisers. Cecilia . Okay, tom, thank you. We want to turn next tonight to a scathing report that has the navy under fire tonight. Its about this mission seen here, ten u. S. Sailors captured by Iranian Forces in the persian gulf. Todays report blasting the crew for what happened, but also praising the lone female on board for quick thinking. What she did . Heres abcs chief Global Affairs correspondent Martha Raddatz with more. Reporter these dramatic images outraged the american public. Iranian revolutionary guards forcing navy sailors to their knees. But today, we learn much of the blame for the incident lies with the navy itself. The investigation found a lack of leadership, a disregard for risk management. Reporter a blistering report citing poor training and basic navigational failures, saying, had any crew member zoomed into their gps, they would have seen they were closing in on an iranian island. The sailors giving up computer passwords and secrets about the boat. Nine sailors will be punished, including the lieutenant in charge, who agreed to tape this apology. It was a mistake that was our fault. Reporter and the helmsman, who refused orders to speed past the iranian boats. But one sailor credited for quick thinking, the sole female crew member, hitting the emergency beacon, risking her life and secretly taping the encounter on her phone. The navy report let iran off the hook, saying the iranians violated International Laws for even detaining the crew, let alone videotaping them. Cecilia . Okay, martha, thank you. And tonight, for the first time, transgender people are now welcome in the military. Defense secretary ash carter announcing the immediate lifting of the ban today. Our mission is to defend this country. And we dont want barriers unrelated to a persons qualification to serve preventing us from recruiting or retaining the soldier, sailor, airman or marine. One study estimates there are 2,500 transgender now on active duty. And next, to a disturbing attack caught on camera in denver. You can see the man striking people with a pole at random. It is the latest violent act in this popular public square. And tonight, it has many there asking if this could be a side effect of colorados marijuana laws. Heres abcs clayton sandell. Reporter in broad daylight spots, a man wildly swings this plastic pipe, striking a bystander knocking him down and hitting him again. Seconds later, still enraged, he attacks another man. One victim left with a severe cut to his head. Scenes of milehigh mayhem are becoming a chronic problem for denvers public image. Hey, put him down, dude. Reporter in another video investigated by police, a man leaving work is assaulted by overly aggressive pabhandlers. Break it up reporter the mayor blames the recent trouble on outsiders, a flood of transients drawn to colorado, for one thing. They were very candid with us. They came here for marijuana. Reporter the violence is forcing the city to spend 650,000 this summer to put more cops on the street. And soon, police will be getting help from a Downtown Business group thats paying for its own private security force. It is a safe place, these are anomalies that are occurring but the type of crime happening here now, officials worry, is the new side effect of colorados Legal Marijuana trade. Cecilia . Clayton, thank you. We want to turn now to the murder mystery followed by millions, taking a new turn tonight. A judge in maryland today granting a new to adnan syed. His convection was the subject of the popular serial podcast. He was sentenced to life in prison in 2000 and has always maintained his innocence. There is still much more ahead on world news tonight this thursday. The 911 call for a plane crash that actually never happened. A field with trees. I smell fuel. And did a popular sleeping pill make him what lose nate the whole thing . News tonight about a deadly grizzly bear attack. The urgent hunt to find that bear. And the skydiving scare caught on camera. What no diver ever wants to see, tangled cords on the way down. How ed, coming up. Eft the hospital r a dvt blood clot. What about my wife. What were building together. And could this happen again . I was given warfarin in the hospital, but wondered, was this the best treatment for me . I spoke to my doctor and she told me about eliquis. Eliquis treats dvt and pe blood clots and reduces the risk of them happening again. Not only does eliquis treat dvt and pe blood clots. But eliquis also had significantly less major bleeding than the standard treatment. Knowing eliquis had both. Turned around my thinking. Dont stop eliquis unless you doctor tells you to. Eliquis can cause serious, and in rare cases, fatal bleeding. Dont take eliquis if you have an artificial heart valve or abnormal bleeding. 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It releases a cooling sensation in your mouth and throat. Zantac works in as little as 30 minutes. Nexium can take 24 hours. Try cool mint zantac. No pill relieves heartburn faster. Next tonight, the plane crash nightmare. The man calling 911, claiming he survived a crashlanding that never happened. Ah ha lose nation he blames on ambien. Heres abcs neal karlinsky. Reporter it began with a heartpounding call to 911, a man claiming hed just survived a plane crash outside seattle. Are you able to safely get out . No, im pinned in. Did it hit any buildings or just into the trees . In the trees, a field with trees. I smell fuel. Reporter the 75yearold caller said he was in the plane with three others, but they were unconscious. Are you able to see the wing from where youre at . No, i cant see anything. Reporter officials called the faa. Then, tracking the 911 call, Emergency Responders found the man, not at a crash site, but in his home, where he claimed he had what loose nated the whole thing, after taking the aid ambien. Tonight, the embarrassed man telling abc news it was a bad experience. He was having trouble sleeping after surgery. From sleep eating to sleep driving, others have claimed damaging side effects as well, including a new jersey woman, pulled over and claiming she had no memory of getting behind the wheel after taking ambien and going to bed. Sleeping pills, any sleeping pill, whether youre taking it over the counter or prescription, you are taking a sedative. Reporter its unclear if the man who thought he was in a plane crash took the proper dose or may have mixed his sleeping pill with another drug. Cecilia . Okay, neal, thank you. When we come back, the hunt for a grizzly bear behind a deadly attack in a national park. And the parachute scare high above the ground. 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