PARIS (AP) — A few days ago, Anthony Sadler was just a regular 23-year-old U.S. college student travelling through Europe on the last summer days before school.

But after helping to thwart a gun attack on a Paris-bound train on Friday with his friends Alek Skarlatos and Spencer Stone, the Sacramento State University student has become an overnight celebrity, stepping out on the red carpet with the full glare of the world's media on him.

On Monday, Sadler attended the Paris premiere of the N.W.A box office hit "Straight Outta Compton." Sadler said "I feel like I'm in a dream. This is unreal."

"We were just on the train and two days later all this is happening... I have school next week so I'm trying to settle down before I start," he added.