Some schools in California prepare for the emergency of an active shooter on campus by developing a safety plan, sometimes even running students through a drill.
But does your workplace have a plan, too?
According to an FBI study of active shooter incidents between the years 2000 and 2013 - 70 percent happened at schools or businesses.
Jay Hart of the Force Training Institute says more employers are coming to him to craft an active shooter plan that's on par with their fire and earthquake emergency policies.
He joins Take Two with more of what those policies look like.