I'm skeptical about the truth of this article considering that nobody knows who these law enforcement people are, and that her husband, "ever the oppositional kind", made no attempt the validate them, and he even allowed them to search his home.
You were right to be sceptical. It turns out the man did his search for "pressure cooker bombs" from his
work computer,
shortly after being fired, and his boss, who was no doubt shitting himself at the prospect of a disgruntled ex-employee blowing up the office, did the only sensible thing and called the cops on him.
Next week on World's Dumbest Non-Criminals: An unarmed man is shot by police... after sticking his finger in his jacket and shouting "I have gun!"