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Preview: Active Shooter

Name: Preview: Active Shooter
Uploaded: 2015-11-19T17:59:45-0500
Duration: 2 min
Description: Potential victims of an active shooter are told they also need to "run, hide or fight" to save their lives before police arrive, says D.C. Police Chief Cathy Lanier. Anderson Cooper reports on Sunday, Nov. 22 at 7 p.m. ET/PT.

Potential victims of an active shooter are told they also need to "run, hide or fight" to save their lives before police arrive, says D.C. Police Chief Cathy Lanier. Anderson Cooper reports on Sunday, Nov. 22 at 7 p.m. ET/PT.