Responding and our own richard engle inside ukraine where fears are growing. also tonight, the omicron variant now in at least 21 states new data on how effective pfizer s vaccine is against it. covid cases surging, deaths up more than 50% in a week, and the cdc new self testing guidelines ahead of the holidays. a state of emergency in hawaii. massive flooding, some areas seeing over a foot of rain urgent rescues five boys pulled from the rushing water. nick cannon s tragic loss. what the star revealed today about his 5-month-old son. our nbc exclusive, federal warning of gift card scams this holiday season how to protect yourself. remembering pearl harbor our conversation with five survivors returning to the solemn site to mark 80 years since that day of infamy. this is nbc nightly news with lester holt.