"Jim's biggest concern was contingency. Meaning, if the third gun jams and the sun's coming up and to not get the shot costs hundreds of thousands of dollars, and the fourth gun is down the elevator, across the lot sitting in a truck for some stupid reason, you're going to get your a** chewed. Or you're going to get fired. Was James hard on people? He was hard on people who weren't doing their job." Actor Billy Zane plays down James Cameron's taskmaster reputation on 1997's Titanic.