Ben is back in business!

The actor made his first public appearance since revealing that he had just completed rehab for alcohol addiction. Ben surprised fans by attending CinemaCon yesterday in Las Vegas to join the cast of Justice League to promote the film. Ben seemed to be in great spirits alongside costars Jason Momoa, Henry Cavill, Ezra Miller and Ray Fisher, as well as director Zack Snyder.

Ben’s longtime bestie, Matt Damon, told Entertainment Tonight that his bud is doing “fantastic.” He said, “He’s with the kids now, couldn’t be happier. Jennifer Garner’s working for a couple weeks in Atlanta, so he’s Mr. Mom-ing it right now. And that’s what he wants to be doing.”

Justice League will hit theaters on November 17.