In a scary and bizarre incident, a gang of 20 to 25 teenagers—apparently ages 13 to 18—swarmed an Atlanta commuter train and attacked passengers early Sunday morning. They beat and robbed two Delta flight attendants, hitting one of them in the face with a pop can. The mob apparently chanted “B.F.P.L.,” the name of an Atlanta gang. No one was seriously injured, and it was unclear why the news was only emerging Wednesday afternoon. There have been no arrests, although the victims say they intend to press charges.