10 Killed in Colorado Supermarket Massacre: The Lineup

It will take at least five days for investigators to sort through the evidence at a Boulder, Colorado, supermarket where 10 people, including a police officer, were shot and killed. New details on the nation’s latest mass shooting. Plus, walk-up vaccination success in Philly, and front doors stolen from the outside of a home. This is The Lineup for Tuesday, March 23, 2021.