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A Cartersville man allegedly having a mental health crisis threatened to “shoot up” the Atlanta airport before he was apprehended by police. Although 49-year-old Billy Cagle made it to Hartsfield-Jackson Atlanta International Airport with a semiautomatic weapon, his family had already called the Bartow County law enforcement, who notified Atlanta police about a livestreamed social media threat. Security video shows Cagle parking his truck just outside the South terminal and walking inside. Cagle