"I had to know what I'd be talking about," said Travolta. "I hadn't been to Ground Zero. And when I got there, the reality really hit me, especially the fact that those firemen and rescue workers were prepared to give their lives for those of complete strangers. I know I'd do that for my children, but could you for a stranger?" Famously, Travolta flies planes himself. "As the captain of a plane, if an incident happened, theoretically, I'm meant to get all my passengers out before I save myself," he added.