Another powerful and dangerous storm is on the move, bringing bitter cold for tens of millions of people from coast to coast. The winter blast continues to impact airports, causing more than 5,000 delays and 1,100 cancelations. NBC's Emilie Ikeda reports and TODAY's Al Roker tracks the latest forecast. Donald Trump is escalating his attacks on Nikki Haley ahead of Tuesday's primary in New Hampshire, but Ron DeSantis appears to be shifting his focus to the next state of South Carolina — Haley's home state. NBC's Garrett Haake reports for TODAY. The Department of Justice is set to release an exhaustive report on the botched police response during the Uvalde mass shooting where 22 people were killed at Robb Elementary School in 2022. NBC's Ken Dilanian reports for TODAY. Kate Middleton, the Princess of Wales, could remain hospitalized for up to two weeks as she recovers from a successful planned abdominal surgery, according to Kensington Palace. This comes as King Charles III is set to undergo a procedure next week for an enlarged prostate. NBC's Molly Hunter reports for TODAY, and Daisy McAndrew and Dr. Roshini Raj join with insight.