In a brief court appearance, Nick Reiner wore shackles and a protective vest. The judge agreed to his lawyer's request to push his arraignment until next month. It comes as two of the Reiners' children are breaking their silence about the brutal slaying of their parents. NBC News' Morgan Chesky reports. The search for a person of interest is intensifying in Providence, Rhode Island as authorities release a new image of an individual they say could have relevant information to the investigation. NBC News' Erin McLaughlin reports from the scene. FBI Deputy Director Dan Bongino has resigned after just nine months on the job. NBC News' Kelly O'Donnell reports.  President Trump is set to make a critical primetime address to the nation. He's expected to make the case for his pressure campaign on Venezuela's authoritarian regime, and tout accomplishments on the border and in the Mideast. The speech comes as polls shows most Americans are dissatisfied with his performance on the economy. NBC News' Peter Alexander reports. Razor blades were found in loaves of bread purchased at Walmarts in Mississippi. Police say surveillance video led them to arrest a 33-year-old woman from Texas, who is now charged with attempted mayhem. NBC News' Jesse Kirsch reports. In the ongoing series "The Vaccine Divide," NBC News' Anne Thompson reports on the frightening spread of whooping cough cases nationwide. Cases in Texas are at levels not seen in more than a decade. The U.S. is now taking responsibility for the deadly crash between a Black Hawk helicopter and an American Airlines commercial jet last January over the Potomac River. NBC News' Tom Costello has that breaking news. A beloved nuclear science professor was killed at home in a Boston suburb earlier this week. Tonight, another campus is on edge after the shocking death as officials say the case is an ongoing homicide investigation. NBC News' Sam Brock reports.  At Texas Children's Hospital, young patients are able to pick from more than 200 hand-decorated, kid-sized trees ahead of Christmas. NBC News' Priscilla Thompson reports. 

Law enforcement officials detailed how the Brown University and MIT shooting suspect switched license plates, used different murder weapons, and had an international sim card as part of his attempt to evade police. NBC News' Erin McLaughlin has the latest. According to a U.S. official, the U.S. military struck dozens of ISIS targets at multiple locations in Syria targeting ISIS infrastructure and weapons sites, in response to an ambush attack killing two Iowa National Guard soldiers last week. NBC News' Courtney Kube and Gabe Gutierrez have the latest.  The Justice Department released hundreds of thousands of documents from its files related to the late sex offender Jeffrey Epstein. NBC News' Ryan Nobles reports. Deadly knife rampage in Taiwan's capital kills at least three people At least three people were killed and six more injured according to Taiwan's national news agency, after a man threw smoke grenades into a train station before attacking bystanders at a mall with a large knife. NBC News' Liz Kreutz reports.Rain, wind and snow are wreaking havoc across the country - causing thousands of delays and cancellations at some of the nation's busiest airports. NBC News' Emilie Ikeda has the latest.   New data centers are popping up around the country to fuel AI, which has led to an increased demand for power. In Maryland, a proposed new 67-mile high voltage power line would cut across a number of farms. Several farmers are now battling power companies, arguing the plans threaten their livelihood. NBC News' Stephanie Gosk reports. There is good news tonight in Fort Worth, Texas where a teacher helped save a Christmas tradition at her elementary school. Kyle Murphy turned to TikTok after the local parent teacher organization came up short with funds that would allow them to purchase Christmas gifts for every student at the school. Nightly News anchor Tom Llamas reports how donations from strangers led to a holiday celebration that students and teachers will never forget.