Department store for three days without food or water. A space just two feet wide. An incredible discovery after his cries for help were finally heard. And good morning, america. Robin on assignment today. Welcome to sara haines. Great to have you here. And take a look at this, everyone. Simulation of a plane crashing into the ocean. That is a pool, but theres matt gutman. There he is. Why matt put himself through that. He is the first reporter to ever go through the coast guards crash survival train. Its grueling. The sharks and now crashes. And right to the big chill. Cold, bitter snow and ice in most of the country. Frigid temperatures in the deep south. Ginger is tracking it. Some thinking its too early to see this out their back door. But two to three feet in northern michigan, the Upper Peninsula. And the snow no longer the headline, its the bitter, frigid air. The wind chill in amarillo, is 1, denver, 16 below is what it feels like. The east coast, its not here yet. You have one more day. And then the bottom drops out. The cold front, and by friday night, freezing or below. And, yes, getting there. But theres a Winter Weather advisory. We find our extreme team, rob marciano, good morning. Reporter good morning. Its snowing in down denver. But the buses are rolling through here. They can handle the snow. 5 to 8 inches. But thats not the story. Its recordbreaking cold. Broke records yesterday, do it again today. And across many states, this storm and arctic blast has hit the u. S. Hard. The winter storm responsible for at least four deaths in minnesota. Raging on this morning. With parts of the midwest buried under as much as 2 feet of snow. I hate to know what january and february hold for us. Reporter michigans Upper Peninsula getting 24. 5 inches. And from wisconsin this is early for this kind of snow. Reporter to nebraska are scrambling to get out. The commute be aware of surroundings at all times. Reporter hard to believe that this place two days ago, temperatures were in the 60s. Today we wont get into the teens. A rude winter awakening, not only for denver and the front range, but millions of americans east and south of here. From a snowy square, lara spencer, back to you. Stay warm. It is happen. Its here. We want to turn to a landmark in Space Exploration thats happening right now. This is the first attempt to land a spacecraft on a comet millions of miles from earth. It may unlock some of the secrets of the yoourcuniverse. And Clayton Sandell is tracking it for us. Reporter good morning. Right now Mission Control says everything is just fine. We are now just hours away from a truly historic event as long as one small spacecraft can stick the landing. This morning, the do or die moment for a decadelong, nearly 4 billion mile space race. The spacecraft is healthy, and we have a go from the Flight Control team. Reporter a seemingly impossible mission. A washing machinesize space propose trying land on a km et, speeding at 84,000 Miles Per Hour. Something that until today was hollywood science fiction. The spacecraft, known as rose a rosetta, has been tracking through the koz pose since 2004. Trying to catch up with a comet known as 67p. Its going to deploy a small craft to land on the surface and unlock the secrets of an ancient space rock. Researchers believe it holds clues about the dawn of the solar system, maybe even life on earth. 4. 5 billionyearold time capsu capsule, what was it like when the earth was forming . Thats huge. Reporter rosetta is picking up an unexplained singing noise from the comet. [ comet noise and sending back selfies from where not even captain kirk has gone before. Star trek legend William Shatner sending along his wishes. Good luck, rosetta. Im so excited and wish you good luck. Reporter they have to wait 28 minutes to see if it landed okay. Thats how long it takes to get the signal bark to earth. After that, we hope to get the first pictures from the surface of a comet. Had to get star trek in there. Thank you. And the bold robbery in manhattan. A Jewelry Store robbery, but the criminals escaped. Tom i cant mass has the story. Reporter this is one of the jewelry capitals of the world. 24 billion in sales every year. That robbery happened just behind me. One of the crooks dressed as a delivery man. But happened on the eighth floor. How did they get away . One working theory, jumped rooftop to rooftop in a batmanlike espe. A brazen heist in broad daylight in new yorks diamond district. Male robbed at gunpoint. Reporter two heavilyarmed men storm into this building with a watch store on the eighth floor. One is outside, the other holds several employees at gunpoint. On a crowded block at 2 00 p. M. Weapons used is two handguns and a machine gun. Reporter with a veterans day parade taking place a block away, demanding the employees to open the safe. But loading up the backpack, the stores owner arrived at work. They were yelling at him to call police. The suspect hit him in the head with the firearm. Reporter the Office Workers were sealed in their offices. Cops and k9 units chased down leads on rooftops. They are at large. But if youre going to rob one of the busiest and heavilymonitored places in the world, shouldnt expect to be free for long. Its unclear how much was stolen. But there are reports it was in the millions. They are still at large. Right not middle. There was a parade downtown. It was crawling with cops. Just incredible. Thank you. Turning now to the navy s. E. A. L. Who claims to be the one who shot and killed osama bin laden. Telling his story in a television interview. He revealed fascinating new details about the mission and what he did right before leave. Martha raddatz is in washington this morning. Good morning, martha. Reporter good morning. Former navy s. E. A. L. Rob oneill says he has thought about the mission since that may day in 2011. Trying to figure out if its the worst thing he has eve done, or the best thing he has ever done. The mission, high risk. The command, take out the most wanted man in the world, osama bin laden. And rob oneill wanted to be one of the ones to do it, no matter how dangerous. The analyst told me, if you want to get a shot at bin laden, hes on the third floor. I talked myself out of a team leader spot to stay on the help the ai want and go to the roof. Thats a martyrs brigade. Reporter in a special on fox news channel, he acknowledged it felt like a oneway mission. Not knowing if they could come back home, committed to the task. Were going to die eventually. Its worth it to kill him. Hes going to die with us. Reporter and a phone call to his father to say goodbye. Im the last one he calls, and hes checking in. Kind of thanking me for a lot of things. He was in his truck at a walmart down the street here. After i hung up the phone, he couldnt get out of the car for 20 minutes. There was something in the tone. Oneill even writing letters to his Young Children just in case. It was an speculation of wex went. It was sad. A few times the tears hit the pages. Reporter but facetoface with bin laden, thinking of the mission, certain that his was the last face he saw before he fired the shots that killed the terrorist mastermind. And the letters to his kids, when he returned, he shredded them. Glad he did. Indeed. Thank you so much and the other top stories from amy. Good morning. Good morning, everyone. We begin with the big news overnight from president obamas visit to chin. The u. S. And china announcing a deal to reduce Greenhouse Gas emissions. President obama calling it a major milestone. But not everything went so smoothly at a News Conference jim was there. Reporter and it was a toast to the landmark Global Warming agreement, but nearly overshadowed by a diplomatic snafu in front of the world press. We have agreed to take a question from the press. Reporter after weeks of trying, the u. S. Got china to hold a rare News Conference with one question from the press. Choosing the New York Times thats been battling with china. And the times reporter pulled no punches, confronting president xi. But he did not immediately answer. Turning to the Chinese Press without acknowledging the american question. Reporters were stunned, as was obama who looked at the press corp. With a shrug that seemed to say, what am i going to do . After several minutes much to the relief of president obama and his aids, he answered. Saying the United States needs to stay out of the hong kong situation, and the New York Times, he said, causes its own problems by not following chinese law. Amy. All right. Thank you. And breaking overnight, five major banks fined more than 3 billion to settle accusations they manipulated Foreign Exchange markets to boost profits. It was a slap on the wrist because they made a combined 337 billion last year. That fine actually equals just two days of revenue. Missouris governor announced preparations to keep the peace after the decision from the grand jury in the Michael Brown shooting case. 1,000 Police Officers have special training and the National Guard will be on stand by. The grand jury decision on whether to charge Ferguson Police officer Darren Wilson for his death could come any day now. And two city workers breaking into the window of a truck. Their colleague was inside up to his neck in water. They cut his seat belt, pulled him out just in time. He suffered a medical emergency before losing control of his truck. And finally, when you think of corn maze this time of year, its supposed to be fun and games, good family fun, right . But take a look at this concern maze. See a problem with it . Its unbelievably complicated. Its the Worlds Largest corn maze. It looks like a computer chip. Does. So 63 acres, hundreds of paths. And people keep getting lost and theyre actually calling 911 for help. Can you imagine . Calling, hi, im in a corn maze. I dont know how to get out. The owners are going to downsize. Less complicated. This is fun. Shouldnt be hard. When you send people in that one, you dont to want see them come out. Lara and i couldnt make it out of one that had two turns. Yeah. Thats bad. Thank you, amy. Turn now to new details about the death of robin williams. A report reveals he may have been suffering from dementia that can cause hallucinations. Mara schiavocampo has the story. Reporter abc news obtain, an autopsy report revealing the comedian may have had a condition, louis body dementia, linked to hallucinations and unusual behaviors. And diagnosed with parkinsons disease last november. The pathological line is a blurry line. Reporter according to the coroners report, he was having a hard time sleeping and was restless. And the night before his body was discovered, acting strangely and reportedly placed several wristwatches in a sock. Giving them to an undisclosed person as he was worried about the watches and wanted to keep them safe. Its most often confirmed after death when looking at a persons brain tissue through a microscope. It can include unusual behaviors, trouble sleeping and visual hallucinations of animals or people. As well as slowed Movement Similar to parkinsons. He had multiple medications before his death, some that doctors say can exacerbate symptoms. He battled alcohol, drug addiction and depression. Theres a voice that goes yeah. Reporter though no alcohol in the system when he died, he may have been in a fragile mental state. Some reveal if this condition could have played a role too. Sources close to the Williams Family telling abc news correlation doesnt necessarily equal causation, but it was illuminating. For Good Morning America, mara schiavocampo, abc news, new york. Very sad. All right. Now to new details. Its a bizarre story out of colorado. A man stuck in a wall at a Department Store for three days. Workers heard the cries for help, but no idea where the noise was coming from. Reena ninan is here with all of the details. Good morning. Reporter good morning. People come to marshalls for the deep discounts. One man dropped in and Officials Say he is very lucky the way it all ended out. Its the dramatic moment a colorado man is rescued from inside this Department Store wall after being trapped for nearly three days. He was desperate to get out of there. Reporter police are still investigating why 35yearold paul fellick was at the store and ended up stuck. Police say he went through the roof and fell through a vent into the exterior and interior walls approximately 2 feet by 8 feet. As far as we know, no water, no communication, no food. Reporter store employees heard his cries for help on monday but couldnt figure out where the sound was coming from. Eventually alerting authorities a day later. We hear a guy screaming in the back. Hes outside, but sounds like hes inside, correct . Screaming like he was in pain. Reporter First Responders locating the spot where he was trapped before a dozen of them made a hole large enough for him to crawl through. Finally free, he was taken to a nearby hospital. Hes currently in fair condition. I dont think he would have been able to survive through tonight. Reporter authorities are still trying to figure out how he got into the crawl space from the roof. And the big question, why did he do it . Police say theyll investigate the incident as a trespassing case. Strange. Yeah. And to ginger now, the words we have been seeing all week. All week. And finally here. The south, and deep freeze. Dallas this morning waking up at the freezing mark. The earliest freeze dallas has had in 17 years. Put this into motion, all the blue, freeze warnings and hard freeze warnings that stretch from new mexico to alabama. Birmingham this morning, the actual temperature is 28. And its not just down there. Were talking about headlines. Out in the pacific northwest, high Wind Warnings outside seattle. Wind gusts up to 55 Miles Per Hour in some of the passes. Higher elevations, snow, rain, 1 to 2 inches, and northern california. Always a good thing for california. Wanted to stop it right here. Denver, thats the High Temperature today at 5. Your local forecast in 30 seconds, first the windchill forecast brought to you by burlington. Withre still dealing somes issues out there. The advisories in effect until the top of the hour. Visibility is below one quarter of one mile at times in spots. Comfortable, 50 toss to lowers, cooler air working its way in from the last. Different spots throughout the rest of the morning, falling into the 55 this afternoon with the wind picked up as mild as it is here along the east coast, from the carolinas all the way through new england, dense fog advisory. People cant see anything. Talk about that at 7 30. And new developments this morning in the california murder mystery of a family of four. The suspected killer now in court four years after they vanished. And dramatic 911 calls as dispatchers tell a family to stop running after the gang that stole their cell phone. And one mans story of surviving a plane crash. The incredible footage on tape. What you need to know if you go down in the water. Matt gutman takes another one for the team, first grizzly bears, then sharks, and now youre drowning. And ticking it up a notch. Why target is giving you free money. Remember this from seinfeld, elaines dance moves. Theres some Science Behind having two left feet. Get together for some cheer. Buy one holiday drink at starbucks, and get one free to share. November 12th16th, 25 p. M. So it seemed like a gwell, we make it pretty easy. In fact, your appraisal should be ready, lets pull it up. Now, how long do i have to decide on this offer . Seven days, and well buy your car even if you dont buy ours. But if i decide to buy a convertible . The offer is exactly the same either way. Nice aaanndd. Here it is well take it terrific. Sell your car the fast and easy way, with no strings attached, at carmax. Start here. Even if its your last one, always share the softness of kleenex tissues. But the Stainmaster Petprotect carpet and cushion system helps prevent pet stains, reduce pet odor and easily release pet hair. So get petprotect and let your pets be pets. Smooth intro man. And yes that is the 5. 7 inch note 4. Is that the new galaxy note 4 . Th the best screen weve er put in a phone. Its big enough for multitasking so you can get to all the important stuff. Do you guys think i ould start mccoy . Yeah you start mccoy look at the detail. It has about twice the resolution of full hd. And, a super wide lens you can selfie, with like everyone. Do you think you could send that to me . Yeah, you gotta give me your number though. The best big screen phone, just got even better. Introducing the Samsung Galaxy note 4. The next big thing is here. Not to be focusing, again, on my moderate my goal was to finally get in shape. To severe chronic plaque psoriasis. So i finally made a decision to talk to my dermatologist about humira. Humira works inside my body to target and help block a specific source of inflammation that contributes to my symptoms. In clinical trials, most adults with moderate to Severe Plaque Psoriasis saw 75 skin clearance on humira. And the majority of people were clear or almost clear in just 4 months. Humira can lower your ability to fight infections, including tuberculosis. Serious, sometimes fatal infections and cancers, including lymphoma, have happened; as have blood, liver, and nervous system problems, serious allergic reactions, and new or worsening heart failure. Before treatment, get tested for tb. Tell your doctor if youve been to areas where ce