Killers Had 'Promising' Futures

Information has come to light about high school students Eric Harris and Dylan Klebold, who massacred 11 students and one teacher before taking their own lives April 20.

Court-ordered evaluations compiled three months ago after Harris and Klebold were caught breaking into a van called Harris "a bright young man who is likely to succeed in life" and found Klebold had "a great deal of potential."

Klebold and Harris, apparently members of the disaffected "Trenchcoat Mafia" at Columbine High, finished a juvenile court program successfully in February, clearing their records.

Classmates said Klebold and Harris made several class-project videos last fall foreshadowing their spasm of violence. In one, "they had their friends pretend to be the jocks, and they pretended to be the gunmen shooting them," high school junior Chris Reilly told the Denver Rocky Mountain News.

A letter was found April 22 in one of the boys' homes that outlined their plans for the day, according to Deputy Wayne Holverson. "We do not hold anyone else responsible for our actions. This is the way we want to go out," it said.

CBS News Consultant Col. Mitch Mitchell, a specialist in terrorism, said "It is obvious that what occurred at the school was a result of careful and deliberate planning."

Mitchell said the shooting massacre was "nothing short of a well-conceived attack.".

"To say this is a typical teen-age homicide I donÂ't think is accurate," said CBS News Consultant Paul Mones, a criminal-defense attorney and leading authority on kids who kill. "I think it is wrong for us to say that this is something we could have necessarily predicted."

Mitchell said no one is completely safe from a similar attack.

"There is no fail-safe solution to terrorism," Mitchell said. "If a terrorist wants you, sooner or later he will get you."