A memorial for 13 victims stands around the graves of three of the Columbine High School shooting victims at Chapel Hill Memorial Gardens in Littleton, Colorado.
On April 21, a day after the massacre just one state away, sixth-grader Susan Teran joined her classmates in practicing a new drill called Code Red. First they locked the door to their classroom in Marshall Middle School in Wichita, Kans. Then they placed their chairs on top of the tables and pushed the tables against the wall, out of the windows' line of sight. Then they crawled beneath the entire pile. At first they were too slow, and although Susan's teacher didn't say too slow for what, nobody needed to ask. The second time, Susan reports proudly, "we got it...
