Watch: Inside Maria Shriver's Bond With Katherine Schwarzenegger & Chris Pratt's Son FordArnold Schwarzenegger is back...with his sons. The Terminator star attended the Sun Valley Film Festival Dec. 6, where he made a rare joint appearance alongside Patrick Schwarzenegger, 32, and Christopher Schwarzenegger, 32. In a photo from the event, Arnold, 78, sported jeans with a black quarterzip sweater and T-shirt, along with black shoes.