Good evening on a very busy wednesday night. Diane is back tomorrow. We begin with the massive upset in washington. The republican leader suddenly out. No one saw this coming including him. Eric cantor once a rising star in the Republican Party defeated by an underdog. An unknown who raised less money for his campaign than cantor spent eating out. How did he explain his loss moments ago. Abc leading us off. Reporter House Majority leader eric cantor said tonight hes stepping down. Not in disgrace but in a defeat he never saw coming. Im going to leave the political analysis to yall. He lost to dave brat. An unknown College Professor on a tea party wave. He orchestrated from his tiny virginia headquarters with only two staffers. This country is change. Reporter how different were their campaigns . Cantor 5 million, 50 times more than brat. Candor wrote 9,000 checks for private jets brat spent at walmart. When we talked to brat last month he pulled up outside the capitol in his chevy. A stark contrast from the motorcade that made his rival seem unstoppable. I will be the voice of the people. Reporter he was caught off guard and the professor managed to beat back an on slot of tv adds. With his homemade youtube commercials. Also in the corner, conservative radio which made him a star as the candidate blocking immigration reform. Voters sending a clear message against the washington establishment. Jeff, you learned of a meeting behind closed doors and some tears among the establishment. Im told by republicans that Speaker Boehner cried a very emotional moment. Hes been in the trenches with his House Majority leader so long. A new fight about who is going to replace him. Jeff, thank you. Now to the new and dramatic video to the moment of crisis inside the walmart. The husband and wife team on a shooting spree. Authorities have revealed they have a tape of the final moments. Abcs senior justice correspondent Pierre Thomas with the images and fbi warning coming for every american town when it comes to terror down the street. Reporter there they are barricaded in the auto section of walmart caught on tape. Jared miller and his wife amanda, antigovernment in the middle of a fire fight. With police. Amanda is wounded. It appears the couple is contemplating suicide. He points his gun at her. She aims at him. Listen to police as they watch it unfold. Looks like theyre shooting at each other. She just shot him. Reporter today authorities corrected the record. In fact, just prior to this video we see where the male was shot by police gun fire. Reporter this came after the millers had executed two Police Officers in a pizza place. Draping with a dont tread on me, a swaus ka and a note that said, the revolution has begun. What happened to change these people into murderers we dont know. Reporter but could it have been prevented. Distraught neighbors said they told them they were preparing to kill police. Yet those neighbors never called authorities and today we learned the police met with jared on three occasions. Including about an alleged threat to the state Motor Vehicles office. Authorities said the encounters gave no hint of the violence to come. Homeland security and fbi Officials Say theyre concerned. A bulletin to warn police to be on the alert for Anti Government violence. A new federal task force has been launched to deal with domestic terrorism and now emerging as a top threat. Pierre, thank you. To the other shooting 24 hours ago at the high school in oregon. We are learning about the student gunman, what he was carrying. In his guitar case and duffle bag. Also new tonight, this image. Look at the bullet hole in that tshirt. Thats the gym teacher who we have learned did something to save so many. Abcs dave wright from the scene. Reporter police say the teenager responsible for this rampage was a 15yearold freshman, Jared Michael padgett, who arrived at school as though it were just another day. He arrived at school yesterday morning on the school bus, carrying a guitar case and duffel bag. Reporter inside the ar15 Assault Rifle used in the attack. Plus a hunting knife and a handgun, plus nine extra clips of ammo. The shooter obtained the weapons from his family home. The weapons had been secured but he defeated the security measures. Reporter Authorities Say padgett went straight to the locker room near the gym where he shot and killed fellow freshman emilio hoffman. Football coach todd rispler saw what was happening and reached down the hall to sound the alarm. The gunman chasing after him, shooting. Look closely at the coachs tshirt there. Thats a bullet hole today the local mayor told me the coachs quick thinking saved lives. Basically the lockdown was hes a hero. Reporter police say padgetts death was a suicide. But not clear is the motive for this attack. For this community some tough questions ahead. Graduation set for tomorrow will go forward as planned but it will include a memorial. David. Thank you. Were getting a clearer picture about a real danger on american roadways. How long had the drivers in those tractor trailers been awake. The drive at the center of the crash involving tracy morgan in court. We learned something about his long commute before he began his work. Abcs gio benitez tonight. Reporter truck driver kevin roper silent in court today, accused of slamming his walmart big rig into a limo bus carrying comedian tracy morgan. Kevin being charged with one count of vehicular homicide. Reporter tonight, the ntsb is investigating ropers strenuous commute. They say he lives in georgia, but works in delaware. The accident happened in new jersey. Prosecutors allege roper hadnt slept in more than 24 hours. Morgans writing partner was killed. Morgan himself still in critical condition. And today, were hearing first hand from friend harris stanton, who was also in the limo. It happened so fast and when it stopped tracy was on top of me. And i didnt see anyone else. Reporter Police Believe the truck driver dozed off at the wheel. The case now triggering an intense debate across the nation. Daphne izer has been sounding the alarm since her son was killed in a crash with a tired trucker. 65 of drivers admitted to falling asleep at the wheel. Reporter truckers telling us they dont rest enough. This job is not an easy job to get a lot of sleep on. Reporter truckers are now limited to 70hour work weeks, but congress is moving ahead with plans to raise the limit to 828 82 hours, leading advocates like izer to worry the situation is about to get worse. Roper pleaded not guilty. Walmart telling us as the facts continue to unfold, we will review our transportation policies and procedures. David. Thank you. We move on into the other developing headline involving the weather. 28 million americans on alert right now and this is what theyre facing tonight. Streets under water in palm beach, florida. Up to coast in virginia. Look at the skies. Tonight is radar. Those storms moving in to forecast in a moment. First, abcs Clayton Sandell on the flooding playing out right now. Reporter tonight the threat of tornadoes and severe thunderstorms drenching the east. In North Carolina, two girls were trapped when this tree fell on their house. In florida, a bolt of lightning ignited a twoalarm fire that left dozens of people displaced. Reporter out west, too much water some rivers and streams are dangerously above normal. In denver, a ten Year Old Girl and her parents had to be rescued by firefighters. The water goes fast. Reporter turbulent waters also aggravating the moment kevin ottomeyers weekend rafting trip goes from adventure to nightmare. And it just takes your breath away as soon as you hit it. And when youre underwater and you dont have a breath, it was quite frightening at first. Reporter everyone made it to shore, but another man who fell out of a nearby raft was killed. Reporter there are some flood warnings as thunderstorms move in tonight. David. Thank you. Elsewhere lets bring in our meteorologist from our power house station in philadelphia, great to have you with us tonight. You were saying much of the country under severe threat. Lets get to the main. Areas. One is a large area all the way from texas into parts of minnesota and also from North Carolina into the ohio valley. The threat of tornados continues tonight and these storms have a history of producing damaging winds and large hail. The system on the move over the next 24 hours . Yes. Slowly its all shifting to the east. The violent storms moving into the gulf coast. As we head into friday it all expands northeast. This atmosphere is loaded with moisture. So flash flooding a big concern as we head through friday. Thank you. One more image before we move on. This one from texas tonight. This home teetering after a chunk of earth gave way leaving it on the verge of falling 75 feet into the lake below. The family moved out a couple of weeks ago at the first signs of trouble. We turn overseas to iraq. It was last night we showed you the city in the north taken over by a grouped linked to al qaeda. Gridlocked as families try to get out of harms way. We remember that moment 11 years ago u. S. Forces toppling the statue. In bagdad. Tonight that city is bracing itself for whats coming. Abcs Global Affairs correspondent Martha Raddatz again tonight. Reporter with breathtaking speed and brutality the militants are advancing towards iraqs capitol of bagdad seizing american supplied vehicles and weapons left behind by the iraqi troops we trained who are abandoning their post leaving hundreds of thousands of families running from the violence. The militants so ferocious and barbaric that even al qaeda dy disvowed them, the. They have taken down one major city after another in just days moving and heading south. Today it was tikrit that fell. Saddam husseins hometown where 11 years ago he was found hiding in a hole months after the u. S. Forced him from power. We traveled to iraq and saw the growing violence in january. Thousands already killed. Two bombings here. Reporter retired general Peter Corelli spent two years commanding troops in iraq. All the americans that i served with who served in iraq who died in iraq and who are wounded in iraq watching this unfold in the most unfortunate way possible and heartbreaking. Martha, you have sources on the ground in bagdad. What are they sensing there tonight . Reporter residents are afraid to move around the city. Iraqi military forces have been sent to form a defensive line just 20 miles from the capitol. But of course, iraqi forces may well just run. Martha, thank you. To another crisis unfolding on the american border. Small children crossing into the u. S. And many cases alone without their parents and then getting trapped in limbo. These images obtained revealing people sleeping on what looks like foil. One snapshot of what some are calling a humanitarian problem. Abcs jim avila with new video tonight raising new questions about a hidden america just now discovered. Reporter it is a huge humanitarian crisis on the border right now. A gigantic unprecedented surge of minors most without parents or guardians crossing our southern border on their own, captured by the Border Patrol as seen in the photos and provided to abc news by texas congressman. They show the teens and younger children packed into cages on hard floors. Advocacy groups complaining that 80 of the children had inadequate food and water supply. Pastor john torez has been inside. The arizona Border Patrol facility. I dont know how to explain it. Theyre holding them like prisoners. Theyre not prisoners. Children. Reporter theyre supposed to be transferred within 72 hours. To the department of health and Human Services and a more humane setting taken by a government camera last week and released today to abc news. A first look at where the children spend their time. Cafeterias, classrooms where english is taught. And gym class. A far different scene than these childrens first stop in american custody. Undeniably there is a problem of humanitarian proportions in the rio grand valley sector that we must deal with. Reporter most of the kids crossing the border illegally. Are not from mexico but from central america. The number one point of origin is honduras called the murder capitol of the world coming here into the overwhelmed arms of the u. S. Border patrol. Thank you. Our hidden america team will stay on this in the weeks to come on world news. Much more ahead on this wednesday evening. The couple who spent thousands on a trip of a lifetime left with nowhere to go. On the other side of this, what happens when your home has been rented out without you even knowing about it . Later, that dramatic moment in the sky. Look at what the pilot saw over his shoulder. That is a dreamliner there. How he captured the image coming up here. And a low sex drive, i had to do something. I saw my doctor. A blood test showed it was low testosterone, not age. We talked about axiron the only underarm low t treatment that can restore t levels to normal in about two weeks in most men. Axiron is not for use in women or anyone younger than 18 or men with prostate or breast cancer. Women, especially those who are or who may become pregnant, and children should avoid contact where axiron is applied as unexpected signs of puberty in children or changes in body hair or increased acne in women may occur. Report these symptoms to your doctor. Tell your doctor about all medical conditions and medications. Serious side effects could include increased risk of prostate cancer, worsening prostate symptoms, decreased sperm count, ankle, feet or body swelling, enlarged or painful breasts, problems breathing while sleeping and blood clots in the legs. Common side effects include skin redness or irritation where applied, increased red blood cell count, headache, diarrhea, vomiting, and increase in psa. Ask your doctor about axiron. My feet felt so heavy at the they used to get really tired. Until i started gellin. I got dr. Scholls massaging gel insoles. When theyre in my shoes, my feet and legs feel less tired. Its like walking on a wave. Dr. Scholls massaging gel insoles. Im a believer next tonight here to one of the hottest scams of the summer. Almost 1 4 of americans say they stay in vacation homes they rent from the owners. What happens when the owner has no idea . Abcs Rebecca Jarvis tonight. Reporter retired couple john and nancy donor love to travel. And were planning the trip of a lifetime to new york city this fall. Were trying to travel farther away. While we can. Reporter like so many, they turn to a Vacation Rental site, a popular way to find lux accommodations. Without the price tag of a hotel. After clicking on the sites and right in their inbox. Free laundry service. Airport transfers and a 20 discount seemed like a great deal. He accepted it. Wired the cash. Even got a thank you email with the rental agreement. Then the website disappeared and i said whats going on here. Reporter what about the companys address listed on that rental agreement . We tracked it down. In london. But no business there. Just this innocent guys home. As far as scams go, this is an epidemic. Reporter heres one way they do it. You see home for rent online but a scammer is waiting to intercept your message and send you a offer without the real owners ever even knowing. We traced the apartment to a legitimate listing inside this new york city apartment building. The owner declined to speak to us on camera but told us people have literally shown up on their door step not realizing they have been scammed. Reporter two of the biggest rental companies, home away, and flipkey told us this happens to far less than 1 of their customers. That travelers should avoid communicating with anyone outside of their sight and to never wire money. Use a credit card or paypal instead. Rebecca jarvis, abc news, new york. Thank you. When we come back, the o. J. Anniversary. Hard to believe its here and harder to believe what theyre doing with the white broncho. man when i cant go, its like bricks piling up. 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