I've made a career over the last seventeen years of mostly playing men in uniform, especially cops. The one thing for an actor that is completely death is if you're bored, because that boredom will show in your work. So there was an inherent challenge in trying to keep it fresh, because it's something that I'm familiar with, but the real draw for me was at long last to work with Halle. She and I had come close to working on two other films together prior to this one that unfortunately had fallen apart for various reasons.