Tamura was targeting NFL headquarters: Investigators believe that he was trying to target the headquarters of the National Football League, but took the wrong elevator, Mayor Adams said. A rambling note found on his body suggested he had a grievance against the NFL over an unsubstantiated claim that he suffered from chronic traumatic encephalopathy.
Well, I suppose the behavior supports the claim, as tragic a proof as this is.
Sometimes reasonable men must do unreasonable things.