In a three-part series, The Denver Post examines the news coverage behind the Columbine High School shooting, with interviews from the people who were there and those affected by the tragedy.

In Part 1, "The Day Of," Amy Brothers and Kyle Newman look back at the events on the day of the shooting that left 13 people dead and forever changed a community. Among those interviewed are former Denver Post visual journalist Shaun Stanley — one of the first media members to arrive on the scene — as well former Denver7 reporter Mitch Jeliker and veteran Post breaking news reporter Kieran Nicholson.

Bearing Witness is written by Newman, Brothers, and Katie Rausch, with editing help from Matt Schubert, Patrick Traylor, Matt Sebastian and Mario Sanelli. Special thanks to Jefferson County Sheriff’s deputy Jimmy Lucas, Nicholson, Stanley, Jeliker and Denver7 for the use of their archival footage.