Soon after the mass shooting at Columbine High School in 1999, leaders of the National Rifle Association held a conference call to craft their response. Secret tapes from this call obtained by NPR's Investigations team reveal how the NRA developed what would become their standard response after decades of school shootings. | Listen to the original Up First episode: n.pr/nratapes Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy