Earlier this week, a possible school shooting in Wisconsin may have been averted when a 13-year-old was arrested after he tried to enter an elementary school with a bag containing a rifle.

It's a reminder of the wave of false threats facing schools nationwide and the fears, evacuations, and temporary shutdowns they caused.

Ali Rogan explores how these threats are being

addressed. The big question facing educators and law enforcement officials this fall is how to best

deal with the latest series of threats of violence, shootings, and bombings. Some schools have resorted

to using metal detectors and arming teachers.

Most threats turn out to be fake.

Many come from young people, and investigating them can be an expensive and tedious process.

In some places, these threats lead to hundreds of children being arrested and detained.

Kenneth Trump is a school safety consultant and heads the national school safety and security services.

And Dr. Deborah Weissbrot is a professor of psychiatry at Stony Brook University.

Thank you both for being here.

Ken, let's start with you.

What sort of threats are you seeing these days?

How are they being communicated?

And how does this wave of threats differ from what you've seen in previous years?

Well, having 40 years in this field, we see a contagion effect after every mass school shooting.

Typically, it peaks over a two or three week, period. And those threats tend to come in one of two forms.

They're either threats that originate locally with students, former students,

someone with a grievance against the school, or they turn to swatting threats. Oftentimes,

computer-generated threats that target multiple schools, multiple districts, sometimes multiple

states, and originate from across state and international borders in some cases.

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