Tamura was once a star high school football player, deeply passionate about the sport and seemingly headed for a future shaped by structure and teamwork.
The gunman was found dead on the 33rd floor of the building—where Blackstone's headquarters are located—after taking his own life with a gunshot wound.
Police have not yet released the identity of the attacker or a possible motive behind the horrific incident, but noted that the suspect appears to be a resident of Michigan.