least 5 or 600 feet away at this point. >> reporter: the shooter blends in with other students and flees the scene. broward sheriff's office adds this statement with the video release. the video speaks for itself. his actions were enough to warrant an internal affairs investigation after being suspended without pay, peterson chose to resign and immediately retired rather than face possible termination. prior to disclosure, broward sheriff scott israel offered a more guttural response. >> what i saw was a deputy arrive at the west side of building 12, take up a position and he never went in. devastated. sick to my stomach. there are no words. >> stand by right there, do not move. >> reporter: meanwhile, release of more material from that day. coral springs police turn over dispatch calls of the moment he was apprehended. >> i have the suspect, nikolas