Charlton Heston (left), then president of the NRA, meets with fellow leaders Wayne LaPierre (far right) and Jim Baker (center) on April 30, 1999, ahead of the NRA's annual meeting in Denver. Around the same time, leaders discussed how to respond to the shooting at Columbine High School in nearby Littleton, Colo. More than 20 years later, NPR has obtained secret recordings of those conversations. (Getty Images)
