Good evening and its great to begin this christmas week with you. More on those christmas storms brewing. One hitting tomorrow, in a moment. But first, the breaking developments tonight. The new video coming in after those two new York City Police officers were murdered in cold blood. Ambushed as they sat in their police car. The new images minutes after gunshots rang out. You can see there at the bottom of your screen. One of the officers on that stretcher. Tonight, authorities are studying this new surveillance tape. The suspect in the hours before. The weapon, they believe, inside that bag. Tonight, the new alerts going out in cities across this country to keep their officers safe. Abcs linsey davis with the new surveillance tonight. Reporter tonight, these new images of the moment of crisis. A cop got hot Reporter Police swarming the scene, rushing to an ambulance one of the two brooklyn Police Officers gunned down saturday in broad daylight by a man authorities have identified as 28yearold ismaaiyl brinsley. Poilce say brinsley was on a mission to kill cops. That morning he left baltimore after allegedly shooting his exgirlfirend. Arriving in new york before noon, on a bus. Police releasing this video of brinsley at a brooklyn mall, his gun, they say, in that bag. Baltimore detectives soon discovering threats he posted on instagram. Im putting wings on pigs today. They take one of ours, lets take two of theirs. With the hashtag shoot the police, rip eric garner and rip mike brown. They alerted the nypd, but word never got to officers wenjian liu and rafael ramos, sitting in their patrol car in brooklyn. 2 47 p. M. , police say brinsley approached that car, telling bystanders watch what im about to do. He walked up to the passanger side and fired four shots, striking both officers in the head. Shots fired. Shots fired. Reporter as police descended, the gunman fled. S. W. A. T. Teams chased the suspect here to this nearby subway station. Police say brinsley then shot himself in the head. Tonight, a city in mourning. Officer liu leaves behind a wife of just two months. Officer ramos, two sons. His 13yearold writing on facebook, its horrible that someone gets shot dead just for being a police officer. Everyone says they hate cops, but they are the people that they call for help. I will always love you. Many in the nypd now angry with new york mayor bill de blasio, who they say has been too impathetic to antipolice protesters. Today, de blasio calling for calm. The assassination of these two officers was an attack on the city of new york as a whole, on every one of us, on our values, on our democracy. We cannot tolerate such attacks. Reporter tonight, the mayor asking that all Police Protests be put on hold until after the officers unirals. Officer ramos is scheduled to be laid to rest on saturday. This memorial only continues to grow. Linsey davis live in brooklyn tonight. Thank you. Lets get right to Pierre Thomas tonight, and pierre, several cities putting out alerts and you have some of them tonight . Reporter thats right, david. Not just in new york, but in the atlanta suburbs, boston, baltimore, new jersey, pittsburgh and other locations across the country. Police leaders and unions have issued warnings urging extra caution. In short, telling their ranning and file they could be targeted and ambushed. In a number of cases, officers are being told not to go on patrols alone, be extra careful about their surroundings and be cautious about what they post on social media. Even before that scene here in new york this weekend, this has been a dangerous year for Police Across the country . Reporter Police Deaths have been spiking compared to 2013, david. The number of officers killed in the line of duty has surged by 23 , with those killed by firearms up 58 . Authorities say theres a lot of antigovernment, antipolice sentiment out there right now. All right, Pierre Thomas live in our washington bureau, pierre, thank you. Now, to the storms brewing at this hour. Just as millions of americans travel for christmas, the howling wind. This from wyoming. Listen to this. Lovely scene there. Blustery weather hitting. And this is i70 in colorado. Grid lock stretching for miles and circled there on the right, thats a man on skis. Hell get home for the holidays faster than anyone in those cars. And look at the map tonight. Winter weather warnings across the heartland. A big storm building strength in the east. The new track in a moment. But first, abcs rob marciano with the new images coming in tonight. Reporter for the more than 98 million of us hitting the roads and the skies for the holiday, the first full day of winter is in full force. Blizzard warnings for the rocky mountains. These motorists were making their way to california for the holidays. Just perfect example of how horrible these conditions can be. Reporter and watch this Traffic Camera in i70 in colorado. On your right, you can see the only way to get around was on skis. The mountains hammered with over two feet of snow. And all that snow causing avalanches. In california, more mudslides closing down part of a highway. This is a significant amount of earth. Reporter stretch rouse travel in the upper midwest, too. Frozen roads in wisconsin and deicing planes in minneapolis. All this, a day after at least seven people were injured in a Lightning Strike just outside this tampa football stadium. It just took you to your knees. Lets get right to rob. That part of the country, Severe Weather through the next 24 hours. Reporter another Storm Brewing in the gulf coast tonight. Weve got a Severe Weather threat from new orleans along i10 through mobile, alabama. Does include tampa and atlanta. Damaging winds, some isolated tornadoes. That same storm system on wednesday will drive up the east coast, with a lot of rain and a lot of wind. This is going to slow down travel. Look at chicago, though. Maybe a little bit of snow there for a white christmas. That means maybe some delays. A yellow plane there. Atlanta and new york, probably significant delays on Christmas Eve because of the wind and the rain. Well keep following it. Rob marciano, thank you. And weve seen the traffic mess on the roads there and the trouble that could be coming at the airports in the east, and thats where Abcs David Kerley is for us tonight at jfk. Reporter good evening, david. The aircraft are getting in. Weather has not been a problem so far. So, these passengers are arrives home for the holidays and those here waiting look like theyre going to get where they want to go. Of course, the weather is going to get worse. Weve seen what can happen. A year ago, thanksgiving, folks in cots waiting for flights. The good news is, Christmas Eve, christmas day, the lightest travel day of this holiday season. David . David kerley on that part of the story. And to another breaking development tonight, the massive nationwide air bag recall just getting larger tonight. Bmw tonight agreeing to the governments demands to replace all of those drivers side air bags. The last major car maker now to comply. The company says no problems with its vehicles have been reported. At least five deaths are blamed on takatamade air bags. 15 million cars have now been recalled in the u. S. Takata has argued there is no scientific reason to expand the recall nationally. Meantime, a welcome headline for drivers tonight. New numbers show the price of gas down yet again. 2. 40 a gallon now. Thats the lowest gas has been during christmas week in six years. Now dropping for 88 straight days. The longest streak since theyve been tracking it. We turn overseas tonight, and to a Major Development in north korea. Just days after president obama said north korea was behind that giant hollywood hack attack. Something has now happened in north korea. So, who is behind it . Heres abcs tom llamas tonight. Reporter tonight, north korea facing a widespread internet collapse. The worst in years. The loss of Service Comes four days after president obama blamed north korea for the sony cyber attack, vowing a proportional response. If the u. S. Did this, theyre clearly defining what the program terps are for this type of activity. Not only north korea, but other nation states participate in this type of activity, there are going to be repercussions. Reporter on state tv, north korea now threatening an attack on the u. S. If there isnt a joint investigation to prove north korea did not hack into sonys computers. If they want to help here, they can admit their culpability and compensate sony for the damages that they caused. Reporter and sony is dealing with a new problem. You want to go kill kim jongun . Totally. Reporter theater owners reportedly fuming at the film studio for blaming them for not releasing the movie the interview. The movie theaters came to us one by one over the course of a very short period of time. We were completely surprised by it. And announced that they would not carry the movie. Reporter abc news learning sonys ceo had to reach out to the major theater chains after those comments and say he did not mean theaters were wholly responsible. This was something today. Tom with us now. And who do we think is behind this . Reporter government sources and Cyber Security experts tell us that hacking to north core reel yas system is not incredibly difficult. If the u. S. Did do it, theyre not talking about it. Tom llamas, great to have us with us here tonight. Were going to turn overseas to rome and a stubbing move by the pope tonight. It is usually the holy fathers christmas greeting for top vatican officials. Instead, they got a withering critique. Calling them out for being gossips, power hungry. Telling them they must do better. Abcs terry moran now. Reporter it was basically the Office Christmas party vatican style. But pope francis was anything but jolly. In scorching words, francis blasted the top officials of the Catholic Church for being more ambitious than they are pious. He said many of them are sick, suffering from a spiritual alzheimers. But there was more. A lot more. Some cardinals practice the terrorism of gossip, the pope thundered, building powerful cliques in the shadows. Reprehensible, he called that. Some lead hidden, dissolut lives and still other have the disease of accumulation of meryl goods. It tells us that pope francis is not afraid of anything, anybody. And hes not afraid to ruffle some feters as he did today. Reporter so, francis real message cede . Merry christmas. Try practicing what we preach. Terry moran, abc news, london. Practicing what we preach. Terry, thank you. Back here at home tonight, and to the economy now. The last minute rush for those christmas presents. Shoching and shipping. If youre not done, youre not alone. Abcs Mara Schiavocampo this evening on the surprising lastminute deals, as we ask, is it really possible to still get your gifts there on time . Reporter tonight, looming deadlines for shopping and shipping. Some stores open around the clock, offering deals not seen in years. I just got a pair of shoes for 70 off. Reporter online sales up an estimated 13 this year, leading to a whole lot of deliveries. Today, e. Today, ups expecting to deliver more than 34 million packages, 394 per second, their busiest day of the year. After reports of missed christmas deliveries last year, shipping giants ups and fedex each hired an additional 10,000 workers. Some of their most crucial employees, teams of meteorologists 15 at fedex, five at ups helping route precious cargo flights around unpredictable winter weather. They can really look into the future for us and help us better plan contingencies so we can make sure our customers get their packages every single time. Reporter time is running out for those sending last minute gifts. But you can still get them there in time for christmas, if you send them out tomorrow, using nextday service. Though, at this point, it will cost you. A lot of the Free Shipping deadlines have passed. So, if you havent gotten things ordered yet, you might be paying a hefty price. Reporter that shipping rush doesnt end at christmas. Ups expects to deliver 4 million gift returns back to retailers in the coming weeks. Ah, yes, mara, thank you. And to a voice remembered tonight. One of the most distinctive voices in modern times. Word today that joe cocker lost his battle with lung cancer at the age of 70. Believing behind a musical legacy from woodstock to the wonder years. Heres abcs donvan. Reporter a voice that could deliver this with words. What would you do reporter joe cocker lasted through transformation. He was woodstock, a little help from my friends. Lend me your ears and ill sing you a song ill triy not to sing out of key reporter and a generation later. The wonder years. The same voice find a little help with my friends reporter in between, the rocker in joe cocker recede ed a bit. Something more of a balladeer emerged. You are so beautiful reporter but one thing stayed there always. The grind around the sill basketballs. The gravel. You are so beautiful to me reporter yes. And so is the sound. Listen. Reporter john donvan, abc news, washington. Incredible music. John, thank you. Up next, the breaking headline at this hour. What a group is accused of smuggling onto a passenger plane. 18 guns, and they were being carried in the cabin. Where the flight was headed to here in america. Also, the alert about Christmas Trees tonight. How fast it can go up in flames. The one tip we didnt know about. Also, the news coming in tonight about muhammad ali. What landed him in the hospital. And we have new word on his condition, coming up. I have a cold with terrible chest congestion. I better take something. Theraflu severe cold doesnt treat chest congestion. Really . New alkaseltzer plus day powder rushes relief to your worst cold symptoms plus chest congestion. [breath of relief] oh, what a relief it is. Creeping up on you. Fight back with relief so smooth. Its fast. Tums smoothies starts dissolving the instant it touches your tongue. And neutralizes stomach acid at the source. Tum, tum tum tum. Smoothies only from tums. And i quit smoking with chantix. I had tried to do it in the past. I hadnt been successful. Quitting smoking this time was different because i got a prescription for chantix. Along with support, Chantix Varenicline is proven to help people quit smoking. The fact that it reduced the urge to smoke helped me get that confidence that i could do it. Some people had changes in behavior, thinking or mood, hostility, agitation, depressed mood and suicidal thoughts or actions while taking or after stopping chantix. Some people had seizures while taking chantix. If you notice any of these, stop chantix and call your doctor right away. Tell your doctor about any history of Mental Health problems, which could get worse while taking chantix or history of seizures. Don take chantix if youve had a serious allergic or skin reaction to it. If you develop these, stop chantix and see your doctor right away as some can be lifethreatening. Tell your doctor if you have a history of heart or blood vessel problems, or develop new or worse symptoms. Get medical help right away if you have symptoms of a heart attack or stroke. Decrease alcohol use while taking chantix. Use caution when driving or operating machinery. Common side effects include nausea, trouble sleeping and unusual dreams. I love myself as a nonsmoker. Ask your doctor if chantix is right for you. Next tonight, to the images of Christmas Trees that always stun us. How quickly they can go up in flames. Abcs gio benitez with the demonstration, and three simple tips to prevent it. Reporter its the most wonderful time of the year, but Christmas Decorations could turn into the nightmare before christmas. Fire departments respond to hundreds of fires during the holiday period and they are more likely to be fatal, like this one days ago in ohio, a fire believed to have started with a Christmas Tree. And no doubt, when a Christmas Tree catches fire, it can go up quickly. Just watch. So, how can you keep your family safe . To find out, syracuse Fire Departments bill elderbroom takes us to a Training Session at the burn house. We set up a few decorations, doing everything wrong. What do you think might happen here . Just the fact that theres no water pan for this tree, that as these needles start to get dry, people actually notice when these are shaken that the needles will fall. Reporter thats the first test. Oh, absolutely. Reporter something we know, but may not do keep your tree watered. If the tree isnt drinking the water in the tray, cut an extra inch or two from the base. Tip two dont use thin extension cords to power lots of lights and train cements. Heres one we didnt know. Never keep those cords under the carpet. Theyre going to wear that insulation off and then that creates a serious fire hazard. Reporter tip three watch out for pets knocking things over. Weve got open flames. If we have pets that come by or if theyre too close to other combustible materials, now were going to have a fire thats going to start. Reporter and it turns out most fires happen after christmas, when that tree really dries out. Dont get your guard down, david, until youve just tossed that tree. Keep watering it. Gio, thank you. When we come back here, the breaking headline. What a group is accused of smuggling onto a passenger plane. Also, new word tonight on humam mad ali coming up. And the great christmas light fight who will win this year . Are we in your hometown . Stay tuned. Is a really big deal. U with aches, fever and chills theres no such thing as a little flu. So why treat it like its a little cold . Theres something that works differently than overthecounter remedies. Attack the flu virus at its source with prescription tamiflu. And call your doctor right away. 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And visit our website to learn how you may be able to get every month free. Finally, the great christmas light fight. Will your neighborhood win . David wright with the high voltage christmas. Reporter in newark, california, the magi are taking a backseat to the jedi. This star warsthemed light display cutting through the christmas clutter like a light saber. This week, nasa released new images showing that some american steps burn 20 to 50 brighter this time of year. On the ground in brooklyn i think people up in space can probably see this. You can easily see why. Clear across the county, brooklyn has met its match in candy cane lane, six blocks of San Fernando Valley tricked out with the traditional, the trendy and the total secular. Its one of the few parts of l. A. Where people actually get out fo their cars, for a selfie with santa. At least some people do. On candy kean cane lane, the only thing as bright as the Christmas Lights are the taillights. Its like driving on the 405. It is. Reporter santa has a day job in the movie industry. His daughterinlaw and son are the selves. Shipping department and event planet by day, elves by night at christmas. Every palm tree aglow with the spirit of the season. More tonight at 8 00 p. M. Eastern. And i hope to see you right back here tomorrow. Good night. Eqeqeqeqeqeqeqeqeqeqeqeqeqeqeqeq this is jeopardy here are todays contestants a lab tech from ramona, california. A semiretired educator from silver spring, maryland. And our returning champion, a stayathome mom from alexandria, virginia