sara rosario, nbc news. >>> u.s.-backed militias in syria have captured a citadel for isis. it was taken back by the syrian democratic forces on thursday. the advance against the jihadist fighter is -- this advance, is important because of the location is key. the main partner for the united states in the campaign against isis and syria. >>> this was a very brutal video. it was posted as a facebook live on social media. and now we know a judge in chicago has denied bail to four suspects accused of beating a mentally challenged teen. the judge said the teens are a threat to themselves and society. they're charged with hate crimes, kidnapping, and battery. prosecutors say one of the teens mom. they say the beating started in a van and continued in a house. the 18-year-old victim is not being identified. >>> a former maryland police cadet will send the next year in jail. that handed down for a deadly crash in prince georges county. reyes drove an unmarked police vehicle at speeds up to 99 miles per hour on the beltway. at one point he apparently swerved to avoid hitting a tow t

sara rosario, nbc news, ft. lauderdale, florida. >>> it's 9:06. bitter cold and gusty winds making it hard for you to get around today. tom is closely watching dangerous chills and when things are expected to warm back up. >>> and something may be missing on your metro ride this afternoon. the annual tradition that may have you here's your receipt. have a nice day! thank you. start the car! start the car! start the car! start the car! the ikea winter sale. wooooooo! get up to 50% off select items. now through january 10th. ikea >>> take a look at this. right now crews are working to clear away black ice at the raleigh-durham airport in north carolina. that state was slammed by the snowstorm that we've all been dealing with. southwest airlines canceled all operations there today, and on top of that, more than a dozen other flights were canceled this morning. the airport says arriving flights should be coming in on time. >>> no pants, no problem. it is a revealing tradition that's continuing today in d.c. >> yeah, we are live on facebook right now.

sara rosario, nbc news, ft. lauderdale, florida. >>> william mathis has been identified as a man shot and killed by police. they say he broke into his ex-wife's home, who had a protective order against him. officers confronted the man inside the home. they say he choked one officer and struggled with two others. two officers went to the hospital and are expected to be okay. the woman and her three young kids were not hurt. >>> a city of rockville police officer recovering this morning after a suspected drunk driver hit the officer's car, trapping him inside. that officer was investigators say another driver made a left turn, hitting the officer's car. the driver was arrested for dui. that officer thankfully expected to be okay. >>> all right. time right now is 6:07. oh, man, that picture doesn't even do it justice. it is so cold when you step outside. tom is tracking freezing temperatures and what you can expect for the start of the workweek. >>> it is a good day to have fun indoors. >> look at that. >> oh, that

nbc's sara rosario is in florida as investigators look into the suspect's past. >> reporter: the images, the sounds. >> that kind of blood curtling scream as people were trapped. >> reporter: widespread panic as passengers at the ft. lauderdale airport run for their lives. >> and he's just randomly, you know, point and shoot, point and shoot anyone in his line of fire. >> reporter: the bullets killed five people and injured six others br alleged gunman esteban santiago ran out of ammunition and surrendered to police. >> we have not identified any triggers that would have caused this attack. but again, it's very early in the investigation and we're pursuing all angles. >> reporter: everything from mental instability to an act of terror. santiago's family members told police he was getting mental health treatment in alaska after reportedly hearing voices. in november he walked into an fbi office telling agents the government was recruiting him to isis. >> there have been concerns was not placed on a no-fly list. i want to be clear, during our initial investigation we found no ties to terr

sara rosario, nbc news, ft. lauderdale, florida. >>> william mathis has been identified as a man shot and killed by police. they say he broke into his -- >>> bitter cold and gusty winds make it hard for you to get around today. tom is closely watching dangerous chills. when things are expected to warm up. >> and something may be missing on your metro ride this afternoon. wait until you hear this. the annual tradition that may have you turning your head. it unbelievable. 's y25eny y17vy >>> take a look at this. that winter storm we've been dealing with also slammed the southeast with snow. southwest airlines suspended all operations at the raleigh-durham airport. you can see snowplows here clearing the tarmac yesterday. they also had to get rid of black ice. the airport is up and running this morning, but they say so farÑ9e÷w5ó it's had more than cancellatio cancellations. >>> so pants, no problem. really? >> for some people, i guess. >> it's a revealing tradition that's continuing today in the district. >> yeah