Billie Joe Armstrong Talks About Decision To Enter Rehab

Last year, Billie Joe Armstrong flipped out at the iHeartRadio festival in Las Vegas after Green Day's set was cut short to make time for other performers. He ranted and raved on stage and even destroyed his instruments. Initially, most observers thought the meltdown was nothing more than a petulant and overly opinionated rock star speaking his mind, but after Armstrong checked into rehab, it became clear the incident was evidence of a much larger problem.