Engelbert detailed the moment he got the call – a "code 9000" – that indicated an active deadly aggressor. He'd heard calls like that before, which were false alarms. Something told him this was different.
“I couldn’t get to it fast enough," Engelbert said.
He quickly teamed up with Mathes and others when he arrived on the scene and heard gunshots. Later in the day, when Engelbert was relieved from duty, he was told to sit in his car.
"That was pretty difficult to do, because I could tell there was more work to be done," Engelbert said.
Collazo then described how he saw custodian Mike Hill, who was killed in the shooting, laying on the floor as he first entered the school through shot-out glass doors. He relayed the information about Hill over the radio, but knew he had to keep moving.
Collazo worked with other officers to clear rooms on the first floor when they started hearing gunshots.