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The FBI is distributing a short film to police departments across the country to prepare local law enforcement for active shooter situations.

Catherine Herridge reported on "Happening Now" that after the Sandy Hook massacre in 2012, a senior FBI agent was tasked with investigating active shooters and the most effective responses.

Herridge said that the result was fascinating new research and the short film, which is being sent to law enforcement and first responders.

"The Coming Storm" focuses on what needs to happen after a shooter is taken down to launch the investigation, aid the families and reestablish normalcy, Herridge reported.

She added that the day before the mass shooting at Oregon's Umpqua Community College, local law enforcement officers were shown the film and later reported to the FBI that some of the strategies were deployed.

Herridge said that some of those strategies in the film include establishing a clear path for ambulances, gathering witness interviews and preserving the crime scene.

"One of the striking statistics that came out of the study is that local law enforcement is at high risk, and one in two officers who confront a shooter are hit by a bullet, and in most cases they are killed," Herridge revealed.

Watch Herridge's full report above and see a trailer for "The Coming Storm" below.

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