SHAYAN ASGHARNIA ONE DAY, TRAVIS BARKER would like to get on an airplane again. He won’t know when it’s coming, but he has an agreement in place with someone very close to him: They’ll tell him to be ready to go in 24 hours, and Barker will know exactly what for. He’ll pack an overnight bag and get in a car that will take him to an airport, where he’ll board a plane for the first time since 2008, when doing so changed the course of his life. “There’s a million things that could happen to me,” he says one unseasonably warm afternoon in late March, sitting shirtless in a lounge chair in the backyard of his longtime home in the Calabasas hills outside Los Angeles. “I could die riding my skateboard. I could get in a car accident. I could get shot. Anything could happen. I could have a brain aneurysm and die. So why should I still be afraid of airplanes?”