I'm sorry the guy had mental problems, but --
He stole a $20+ million aircraft, destroyed it, and committed suicide. His supervisor, that guy's supervisor, etc., will suffer consequences for the guy's actions. If the land the guy crashed on belongs to someone other than the government, the owner will suffer some damages. And while he was doing all of this, he was putting other people at risk of death (e.g., had he gone out onto the runway with a plane landing or taking off that couldn't abort, or had he crashed into a section of land that happened to have some people on it).