A credible threat from a Florida woman who flew to Colorado and purchased a gun, forced hundreds of schools to close just days before the 20th anniversary of the Columbine tragedy. Rick Kaufman who served as a first responder and a spokesman for Columbine 20 years ago joins me to discuss this unfortunate news, what can educators do, are schools safer today than 20 years ago, and he talks about what it was like being on the Columbine campus on that terrible day.