That day, a man walked into police District 5 lobby, and Holmblad spoke with him first at the counter.AdvertisementProsecutors said Darreon Parker-Bell asked about his friend Keishon Thomas who died in police custody earlier that week."He said, 'What happened to my brother?' He goes, 'He died here the other day.' I said, 'Sir, I can't talk to you about that.' That was our conversation beginning to end, and that's when he pulled the gun out and started shooting," Holmblad said.During his 21 years on the job, Holmblad said he never fired his gun at someone or had been shot at.That day, he said he was almost killed.