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Dallas Attack: How the Deadly Police Ambush Unfolded

Name: Dallas Attack: How the Deadly Police Ambush Unfolded
Uploaded: 2016-07-08T22:31:06.000Z
Duration: 3 min 57 s
Description: A law enforcement source tells NBC station KXAS that the gunman, who shot 12 officers, was laughing and singing before police killed him with a bomb on a robot.

A law enforcement source tells NBC station KXAS that the gunman, who shot 12 officers, was laughing and singing before police killed him with a bomb on a robot.