A year before the attack, Joe シャルモーザ and Howard Cornell were worried that Colombine was just the kind of place where school shooting might happen.  They were in charge of security for the school district that included Colombine.  After the shootings in Paducah, Kentucky and Jonesbourogh, Arkansas, they were afraid that one of their schools might be next.

"Did you find any common elements?"
"Oh, yes.  In fact, if you are in a white,suburban, middle class, fairly large complex school, you'd better have a plan for violent threatening."

That's exactly what they have --- a plan.  In August of 98 of fall, eight months before the attack on Colombine, Cornell and シャルモーザ wrote the security plan that requires school officials to notify and meet with parents and law emforcement officers,as soon as they learned of a threat by any student, to commit any active of violence.  They say Colombine didn't follow the plan.

"And how did you propose that the schools identify students who might be a problem?"
"Sophmores, even a freshman says 'I'm gonna kill somebody. I've got a gun at home to do it, or I'm gonna ... I'm gonna blow the place up.' It's time to trigger this procedure and take action. In the event, a kid initiates some behavior that pops those red flags up, then we need to move."

About the time Cornell and シャルモーザ presented their security plan to Columbine, two of the school juniors Eric Harris and Dylan Klebold were coming to the attention of school and lawenforcement authoties.

"He was just a scarly kid."

Deborah Adams was the sophmore of Columbine in 1998 when she found her name on Harris's website on his hit list.

"In December of 98, you went to assistant principal of the school and told her that you have been threatened by Eric Harris."
"Yes."
"What did you say to her?"
"I told her that Eric was intimidating.  He was threatening that other students were feeling threatened by him.  They did not feel safe in school around him. That it was not safe environment when he was around."
"And what did you want her to do?  What did you think she would do?"
"I wanted her to call Eric and maybe call his parents and just talk to him."
"And?"
"And I don't think it ever happened."

But the assistant principal denies that Deborah Adams ever spoke to her about Eric Harris.

"I made an appointment, sat down and I talked to her.  I was serious and she should have known that."

That was December.  By then, Klebold and Harris had already bought a riffle, a semi-automatic pistol, and two sets of shotguns.