healthy at school. as israel begins giving people in certain groups a fourth vaccine dose, as the nation prepares the mark one year since the deadly insurrection at the u.s. capitol. the house committee investigating the attacks revealing more about what it has learned so far. in colorado, the search continues for two people still missing after a powerful, fast-moving wildfire destroyed nearly a thousand homes. and any minute now, president biden will be returning to the white house after his holiday break. with one of his top priorities being trying to stop russia from invading ukraine once again. and we begin with our top story this morning. the pandemic causing travel nightmares and confusion for millions of students, returning to school today. already, at least 1,900 flights have been canceled in the u.s. hundreds of schools are going remote for at least the first