Here's the latest for Tuesday February 1: Pfizer COVID-19 vaccine could become available for young kids; Russia responds to US proposal on Ukraine; California firefighter shot and killed; Medical examiner to testify in George Floyd officers' trial.

      

Here's the latest for Tuesday February 1: Pfizer COVID-19 vaccine could become available for young kids; Russia responds to US proposal on Ukraine; California firefighter shot and killed; Medical examiner to testify in George Floyd officers' trial.