New COVID-19 Variant Emerges | Nightly Check-In

Vaccine makers are testing against another heavily mutated variant of the coronavirus named Omicron. Why health officials are calling it a “variant of concern,” plus, a person with a knife was shot and killed at the entrance of Marine Corps Recruit Depot. A look at what happened before the shooting. NBC 7’s Catherine Garcia has your Nightly Check-In for Friday, Nov. 26, 2021.