police open fire at a suspect trying to carjack a vehicle, striking a 1-year-old inside for the first time, the boy s mother speaking out the deadly explosion rocking a neighborhood a stockpile of fireworks igniting residents ordered to evacuate my exclusive with delta s ceo. what the airline is doing to try to win customers still anxious about flying and what flights might you need a vaccination passport for and the pickup dangling over a 100 foot gorge two people and two dogs trapped inside. the heroic rescue. announcer: this is nbc nightly news with lester holt good evening, everyone, and welcome. as americans have lined up for covid shots, missing from the picture have been children the vaccine so far only approved for older teens and adults but there are exciting developments to report tonight. one of the three big vaccine makers, moderna, says it s starting a trial to vaccinate nearly 7,000 under the age of 12. in a moment, we ll hear from a mom who has sign