April 19 - In the months before they attacked Columbine High School, killers Eric Harris and Dylan Klebold drew "an elaborate blueprint and script" for their rampage, something the sheriff's office ...

Concealed in the coat Dylan Klebold wore to school on April 20 was an assault weapon banned from manufacture in 1994, a crude, menacing pistol made to fire 36 rounds without reloading. Eric Harris ...