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.
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.
Cops have to drive 10 minutes to leave a neighborhood at the only exit while a criminal can jump over some fences and flee the neighborhood in like 45 seconds