The brother of the man accused of threatening to open fire at Hartsfield-Jackson Atlanta International Airport says his family is still in shock, but thankful they spoke up before tragedy struck.

Scott Nelson, the brother of 49-year-old Billy Joe Cagle, told CBS News Atlanta on Monday that his family alerted police after seeing Cagle live-streaming on social media, saying he was on his way to the airport to "shoot it up."

"I know he took some medication, and when he don't take it, he starts hallucinating and stuff," Nelson said. "He's never hurt anybody. I'm shocked that he went to the airport."

Nelson said his brother, who works at a hay farm in Cartersville, has long struggled with mental health challenges. The family immediately called police when they saw his alarming post.

"It

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