With sophomore album 'All at Once' out this week and a new round of performances on the road up ahead, the Airborne is riding high.In an empty bar in Hollywood, the members of the Airborne Toxic Event have come to jam. They're here with a small hi-def video crew to capture a live performance of the song "Changing," accompanied by a young group of step-dancers called the Strikers All-Stars. "We haven't actually practiced this yet," says ...