been identified as oakland unified school district building and grounds department staff member david sacarai. >> this was a shock for me. i can only imagine how his family feels and the different emotions they have going through this that they've had since that day. >> reporter: on september 28th, police say at least two people ran into the campus comprised of four schools. sacharai was there to install new countertops. >> he was here on campus this summer, and he helped us to install our public announcement system. >> reporter: bay tech principle cesely frost showed us the speaker he helped install. ousd reacting to his death by releasing a statement saying in part, we are devastated by the loss of david, and we are heartbroken for his family and community. he will be profoundly missed. we reached out to his family. they did not want to talk. we did speak with another victim from that day, jason arbothel, he is david's co-worker who was grazed in the head by a bullet and survived. he says david's death should have never happened, especially to someone who brought smiles to everyone's face.