you're live in the cnn newsroom. thanks for joining us. i'm boris sanchez. hundreds of christmas eve flights are grounded as the omicron variant hits airlines hard. we're tracking the holiday disruptions and the surge in covid cases that's shattering records. also, newly released video shows a brutal three-hour battle on january 6th. rioters attacking police in a capitol tunnel. one of the most violent clashes during the insurrection. and a teenager's shopping trip turns deadly. a bullet tearing through a dressing room wall shot by a police officer firing at a suspect. how did this confrontation go so horribly wrong? so right now thousands of people who expected to be boarding a flight this christmas