https://apnews.com/article/atlanta-airport-gun-arrest-6aafd05e7ac71c25af83ee21fb5ed438>Police arrested a man at Atlanta’s bustling airport on Monday after getting a tip from his family that he was planning to shoot up the place, and found an assault rifle and ammunition in his truck outside, the city’s police chief said.>Billy Joe Cagle, of Cartersville, Georgia, had described his plan to shoot up the world’s busiest airport on a social media livestream, Chief Darin Schierbaum said during a news conference.