With two giant surprises a little later here. But we begin with that unwelcome storm. The brutal cold snap across the midwest and sweeping south tonight. 200 million americans will feel this. Just look at the wall. This is the view through this drivers windshield in michigan tonight. Whiteout conditions across several states. There was a narrowing moment in minnesota. Youre about to see an officer who pulled over to help a driver when a tractor trailer comes barrelling in. Just incredible there. Luckily, no one was hurt. But a real reminder of the changers of winter driving. The deep freeze will sent temperatures 30 degrees below normal all the wail down to the gulf. We begin with abcs alex perez in the middle of the storm. Reporter the mild west, taking a beating tonight. Marquette, michigan, buried under more than two feet of snow. And still falling. Drivers venturing out to find covers and slick roads. Those powerful snowstorms heading east today. In wisconsin, some places seeing more than a foot. Here in minnesota, more than 580 crashes and 700 and 86 spinouts reported. Car after car, no match for this slippery hill in dulutduluth. An exhausting 24 hours for minnesota snowplow truck drivers. Tonight, we rode with tim, who says this snowstorm is one of the worst hes seen so early in the season. What you plowed once that looked good, its all covered again. Reporter with plunging temperatures now in the forecast, the big concern for drivers, slick spots and potential for black ice. Everybody forgets how to drive in it and its like getting back to snow driving 101, you know . Reporter most of minnesota, digging out today. In st. Cloud, they saw a recordbreaking 13. 2 inches. This front loading tipping from the weight of all that snow. And watch this close call for officers in rogers, minnesota. Responding to a jackknifed semi, when another semi barrels right into them. Thankfully, no serious injuries. But at least two deaths reported on minnesota roads. And here in minnesota, they have been stocking up on salt since spring. More than 276,000 tons already in place for whats to come. David . All right, here we go. Alex perez leading us off. Thank you. This monster storm not just unleashing snow tonight, two incredible images to show you. A dust storm in colorado. That massive storm triggered by high winds, that rushed in behind the arctic front. Thats from the air. And more trouble on the ground in colorado. A wall of tumble weed kicked up by those winds, as well, tonight. Lets get right to ginger see, who is tracking this tonight. Tremendous tumble in temperatures is the first thing i have to show you. Just really smacking everybody in the face there in the plains. Wichita had a record high on monday of 77. Watch what happens in the next 36 hours. More than 60degree temperature drop. Oklahoma city tomorrow, 22 degrees as we wake up. The freeze warnings, the hard freeze warnings are in place from new mexico all the way to apartments of louisiana and southwestern arkansas. And that freezing line where we take the actual temperature to 32 makes it close to dallas early tomorrow morning. Just goes right past it and into the 20s in north texas. Look how far that purple extends into new england. Pretty cold. All the way down to the lone star state. Ginger, thank you. Now to a remarkable first hand account to the navy s. E. A. L. Who sails he was the one that killed osama bin laden. Youll remember the images from inside that compound after the raid. And we thought wed might never know how it went down. Tonight, we do. Abcs chief Global Affairs correspondent Martha Raddatz. Reporter abbottabad, pakistan, may 2nd, 2011. The bin laden compound, quiet on this moonless night, as s. E. A. L. Team six moves in. S. E. A. L. Rob oneill saying the team had not originally been told who the infamous target would be. They told us a couple of things, like, were going to read new eventually, heres who is going to be there. They said a few names that didnt make sense. A few of us were talking a couple days later about this person. This person. Why would they be there . Its bin laden, they found him. Were going to go get him. Reporter no sooner had they begun the descent, one of the helicopters crash lands. And while officials watched anxiously, in real time from the white house, oneill revealing, in a special tonight on fox news channel, that as the s. E. A. L. S made their way upstairs to bin ladens bedroom, the team feared they would not make it out alive. The more we trained on it, the more rerealized, this is going to be a oneway mission. Were going to go and were not going to come back. Were going to die when the hosue blows up, were going to die when he blows up. Or were going to be there too long and get arrested by the pakistanis and were going to spend the rest of our short lives in pakistani prison. Reporter but a differet scenario played out that night, oneill says he found himself face to face with the terror master mind, telling esquire magazine he could clearly see bin ladens features through the night vision goggles, that he ws way taller than i was expecting. In that split second, oneill says he fired twice into bin ladens forehead, killing him instantly, telling the Washington Post i watched him take his last breath. Reporter one of the other s. E. A. L. S there that night, Matt Bissonette tells a different story. Matt bissonette says it was the pointman on the team that fired the fatal shot. Oneill sails the pointman either missed or just wounded bin laden. That s. E. A. L. , the pointman, has yet to tell his story. David . All right, Martha Raddatz in washington tonight. Martha, thank you. Overseas tonight, and to some telling images out of china. All eyes on president obama and russian president vladimir putin. Their facial expressions, and now their body language under scrutiny. Take a look. President putin putting his hand on president obamas shoulder. But even more controversial, when putin offered a shawl to chinas first lady. Why was that so controversial . Abc White House Correspondent jim avila traveling with the president. Reporter it was a moment of chivalry turned instantly awkward. The recently divorced, macho leader from russia, placing that shawl over the chilly shoulders of the first lady of china. Within seconds aides replacing it with a coat. But the damage is done. Some suggesting putin getting a little too cozy with the first lady. Within hours, chinese sensors all but erased the uncomfortable images from the internet. Similar complaints in the china blogshpere for the american president. Aghast at obamas nicorette gum chewing habit. Labeling obama immature with the appearance of a hiphop star. It didnt stop him from chewing during todays photo op and then another awkward exchange. Obama courting stronger ties with china with a personal appeal. My hope is that we can take the relationship to a new level. Reporter chinas leader responding, essentially, hes just not that into obama. The putin obama dynamic remains frosty. The russian appears to pat obama on the shoulder and is ignored. Moscow released another photo they say shows putin smiling at the american president. We are told obama and putin did talk three times so far for about 15 minutes total. David . Jim avila, thank you. And tonight, a welcome sight here in new york and across the country, now ebolafree. Dr. Craig spencer, the american doctor who authorities feared travels through the city with ebola. Tonight, cured. And no one else sick. I am a living example of how those protocols work and of how Early Detection is critical to both surviving ebola and ensuring that it is not transmitted to others. Great to see him today. Also tonight, nurse kaci hickox, now cleared to move around freely. Its been 21 days, no one sick there, either. Zblifl now to florida this evening and those incredible images we showed you last night here. That town on alert. Yet another sinkhole, just hours ago. It comes after the first one swallowed this car in 15 minutes flat. Tonight, families have been evacuated, and Abcs Steve Osunsami is on the scene. Reporter just when authorities outside tampa were thinking this tenfoot wide sinkhole had stopped growing, another one, five feet wide, opened up at the home next door. And they say its possible they could see a third. Sediment is still very weak. So, it could move. Reporter six frightened families still in hotels tonight. While engineers here listen to the ground and decide what to do. Its scary. I dont know if were going to have a place to go to or not. Reporter theyll most likely pour sand and clay into the hole, and hope it holds. Thats what they did almost one year ago, 13 miles away in dunedin, florida, and we were there. We saw them haul in more than ten trucks of sand, to fill this massive 90foot wide hole that swallowed a large pool and destroyed two homes. And look at this same spot today. Two empty lots looking like nothing happened. The property is now for sale, and the realtor says its probably the safest land you can buy in florida. Tonight, at the bottom of this sinkhole, theres a fairly new car and engineers are telling families theyll have to remove it before they fill the hole. Steve osunsami, abc news, holiday, florida. Steve, thank you. Next, to missouri. The Police Shooting of unarmed teenager Michael Brown back in the headlines tonight. Governor jay nixon this evening announcing a plan of action preparing for possible unrest. The grand jury will decide in the coming days whether to indict officer Darren Wilson in the shooting. More than 1,000 officers have received specialized training in preparation for any violence that could come. Next tonight, to that possible new clue in the Robin Williams case. We reported here was suffering from parkinsons disease. Tonight, were learning more about a troubling condition rep lated to it. Abcs Clayton Sandell with the familys reaction. Reporter doctors examines Robin Williams brain tissue found signs the comedian may have had something called lewy body dementia, in addition to parkinsons. Lewy body dementia can cause unusual behaviors, trouble sleeping and hallucinations. The coroners report said the 63yearold comedian releasedexd a recent increase and paranoia before he committed suicide in august. On the night he died, the autopsy report notes williams reportedly placed wristwatches in a sock, as he worried about the watches and wanted to keep them safe. So, did lewy body dementia play a role . His death . Sources close to Williams Family tells us correlation doesnt necessarily equal call sags, but it was illuminating. Its a diagnosis that was frequently missed. A lot of people will have the pathology when its not necessarily suspected bid their doctors initially. Reporter the coroners report also noted williams did not have any Illegal Drugs or alcohol in his body when he died. The reason why an American Icon took his own life may never be known. Clayton sandell, abc news, los angeles. Clayton, thank you. To oklahoma now, and to a story breaking as we came on the air last night here. A gunman storming into an office, taking hostages. As the siege went on, the workers escaping slowly with their hands up. But one woman, a hero mom, still inside. Tonight, what she said to get him to let her out. Abcs ryan owens with the interview. Reporter this is the gunman who police say shot his way into a law firm in this Oklahoma Office building. And held paralegal Jennifer Shokat hostage for more than four hours. I was crying, he assured me he wasnt going to hurt me, it took me a little bit to believe him. Reporter it turns out the 32yearold wife and mother was armed with something more powerful than his pistol. A plan. I just thought, the more i could get him to like me, the less like little he would hurt me. Reporter so she kept talking. For hours. The 29yearold suspect, devin rogers, is a veteran who served in iraq and afghanistan. He said he was very highly decorated and that he had no more value to society. He came back and could not find any work that would pay him above minimum wage and he said that he just wanted to go to jail. Reporter rogers allowed her to use her cell phone. And did she ever. I just told her, you know, im being held hostage. Theres a gunman in the office. Please call mom. This is no joke. Reporter thats quite a text message. She texted her family and friends, even her boss, an attorney, to help negotiate her own hostage achors surrender. You just go into survival mode. Reporter it worked. Tonight, rogers is charged with kidnapping and will face a judge tomorrow. I think he needs to get the help he needs. Reporter a peaceful ending, thanks to a young paralegal armed with that plan. Ryan owens, abc news, norman, oklahoma. A very calm paralegal. And there is still much more ahead on world news tonight this tuesday. What would you do if someone stole your iphone . Listen to this 911 operator. Ive been on the phone with someone just like this that was killed over a cell phone. That operator talking to the family chasing the thief anyway. How this ends. And would you do the same thing . Also breaking at this hour, the jewelry heist. The pictures coming in, the workers racing out of the building. And on this veterans day, the surprise tonight in iowa. Youre going to love this. Then the surprise in alabama. 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One in three people will get shingles in their lifetime. The shingles rash can last up to 30 days. I wish that there was something i could do to help. Some people with shingles will have long term nerve pain which can last for a few months to a few years. Dont wait until someone you love develops shingles. Talk to your doctor or pharmacist about your risk. Next tonight, a 911 operator telling a couple not to chase the thief who stole their iphone. They did anyway. What would you do . Heres abcs neal karlinsky. Were following the people around. And can we get a Police Officer . What do you mean, youre following people around . Reporter at first, even the 911 operator was surprised. A seattle family that had just had an iphone stolen from their car in this parking lot was now in hot pursuit of the bad guys, by using the find my phone feature, which allows people to see where their phone is on a map. Okay, go ahead and pull over and stop following that vehicle. Okay. Thats totally dangerous and you dont know if they have any weapons. Reporter but the family kept going. They followed the stolen iphone through city streets from this park, eventually to this parking lot and then to this one. But the police wouldnt meet up with them to make an arrest and the 911 operator wasnt happy. Maam, let me tell you something. Hold on a second. Ive been on the phone with someone just like this that was killed over a cell phone. And i really dont want that to happen to you, okay . Its just really not worth it. Reporter the victims reluctantly gave up. If you are in the situation again, would you be tracking and following, or yeah, id track him. Reporter you still would . I bet you would, too. Reporter Police Acknowledge the victims frustration, but insist chasing down thieves yourself is a dangerous roll of the dice. Neal karlinsky, abc news, seattle. When we come back here tonight, hellmanns mayonnaise, fighting mad. Will you agree with them . 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