FO: Mass shooters in past few years have shown 'bizarre' behavior, mental illness: Swecker ((foxfriendsfirst___)) ((lubuntu at wor2 1TXN))

="//video.foxnews.com/v/6249166934001">Mass shooters in past few years have shown 'bizarre' behavior, mental illness: Swecker

At least 8 people killed in shooting at FedEx facility. Former Assistant FBI Director Chris Swecker weighs in on 'Fox & Friends First.'