The suspect is believed to be Robert Card, a 20-year US Army veteran from Bowdoin Center, Maine.
(according to Telegrams so take with grain of salt)
EDIT: Name confirmed by news.
Show
According to law enforcement, CARD recently reported mental health issues to include hearing voices and threats to shoot up the National Guard Base in Saco, ME.
Of course, you'll never see narcissism demonized the way autism was because according to CHUDS, narcissistic personality disorder is a "cool" mental disorder and therefore not really a mental issue.
... what ?
Hey, don't look at me. Reddit was the one that romanticized dark core personality traits.
I wish I was spouting bullshit.