In a 15-page interview with Andrew Solomon at The New Yorker, Peter Lanza indicates he is as baffled as law enforcement, mental health experts and other parents about his son Adam's behavior. Here is that article. Public relations agency Edelman, which represents Lanza's employer GE, had been also advising him, at least the last time Odwyerpr.com reported on the matter.
In essence, in pulling the pieces together Solomon indicates that there was little to predict that Adam would become a mass killer. Yes, he manifested increasingly odd behavior but so do so many techies. As Solomon states, "The few dangerous ones are impossible to identify." Adam seemed more to be a victim of his own frayed wiring and internal demons than a menace to society. Experts imposed the label "Asperger's Syndrome." Lanza is more convinced the problem might have been a major psychiatric disorder. In short, he might have been 100 percent delusional.
Optimistic societies like the U.S. try to explain phenomena, all of them. X happens because of Y. But some cannot be made sense of and prevented, at least not yet. All the rhetorical huffing and puffing probably won't be able to make another tragedy like Newtown's impossible. Life is fraught with danger.