There is a strong suspicion, perhaps even a medical diagnosis, that he was a paranoid schizophrenic, which would make a lot of sense. Schizophrenia is a cruel disease, and most of the time it begins slowly and becomes progressively worse.
Typically the age window for developing schizophrenia is from age 16 to 28, but importantly, that window is divided in half based on how the disease manifests itself.
In the earlier years, victims demonstrate large deficits on almost all cognitive measures: arithmetic, executive function, IQ, psychomotor speed of processing and verbal memory.
Those with late-onset schizophrenia demonstrate minimal deficits on arithmetic, digit symbol coding and vocabulary, but larger ones on attention, fluency, global cognition, IQ and visuospatial construction.
Importantly paranoid schizophrenia may be a different kind of schizophrenia altogether. Just paranoids, without schizophrenia, are known for their acute senses and strong cognitive faculties, seemingly the opposite from just schizophrenics. Having both conditions is different from having just one or the other.
In any event, the disease might take years before it is obvious, both to others and the person themselves.
I agree that if the guy was going nuts it was after he got out of the military and not from PTSD.
My thing is that I still do not see two battle hardened security experts even entertaining taking a Schizoid who already threatened to kill people out on a gun range with a loaded weapon. It just makes no sense. Fishing maybe, hiking, backpacking, horseback riding that kind of stuff.
If some family you didn’t know called you and told you that their son was suffering from Schizophrenic paranoia and had been locked up once or twice already for threatening to kill himself and others would you say “Hey lets take him to the gun range?” Of course you wouldn’t.
The whole thing just does not add up. It just feels weird.
Maybe a better picture will come out at the trial.