Chat with us in Facebook Messenger. Find out what's happening in the world as it unfolds.

Crime scene tape surrounds the Century 16 movie theater where 12 people were killed in a shooting rampage last Friday, on July 23, 2012 in Aurora, Colorado. Suspect James Holmes, 24, allegedly went on a shooting spree and killed 12 people and injured 58 during an early morning screening of 'The Dark Knight Rises.' (Photo by Kevork Djansezian/Getty Images)
Crime scene tape surrounds the Century 16 movie theater where 12 people were killed in a shooting rampage last Friday, on July 23, 2012 in Aurora, Colorado. Suspect James Holmes, 24, allegedly went on a shooting spree and killed 12 people and injured 58 during an early morning screening of 'The Dark Knight Rises.' (Photo by Kevork Djansezian/Getty Images)

    JUST WATCHED

    How to detect threatening behavior

MUST WATCH

How to detect threatening behavior

Experts discuss how to look for warning signs, in wake of the Aurora, Colorado, shooting.

How to detect threatening behavior

Experts discuss how to look for warning signs, in wake of the Aurora, Colorado, shooting.