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Clues show meticulous planning before Las Vegas massacre

Name: Clues show meticulous planning before Las Vegas massacre
Uploaded: 2017-10-09T13:50:34-0400
Duration: 5 min 2 s
Description: The Las Vegas gunman left behind a handwritten note that shows he made calculations intended to maximize the carnage. CBS News security analyst Ron Hosko, a former assistant director of the FBI, joins CBSN to discuss the latest on the investigation.

The Las Vegas gunman left behind a handwritten note that shows he made calculations intended to maximize the carnage. CBS News security analyst Ron Hosko, a former assistant director of the FBI, joins CBSN to discuss the latest on the investigation.