Embedded Player Two years after the massacre at Columbine High School in Colorado, Robert Siegel and Linda Wertheimer sat down this week to talk with some high school students and their parents about how the incident affected their lives then and now. The students talk about safety in their schools, and about the unwritten rules about when and when not to tell adults about another kid. Parents talk about what worries them most and least. And they discuss what they do to try to stay in touch with their children's lives.