Tom Cruise in Rock of Ages and Jack Reacher

“I was 19 when I made Taps, and my character loved weapons. In one scene, I was firing a machine gun out a window, and I looked down and there was a guy shooting back at me. This was my first experience with stunts—and an expert marksman was aiming at me! I didn’t want to look like I was dumb, but between takes I pulled the guy aside and said, ‘Have you done this before? You’re not going to shoot me, are you?’ I was terrified that my first big part would be my last.”

Source