"On that first film we were faced with some major action set-pieces. On Insomnia we had done a bit of a shoot-out, but nothing on the level of Batman Begins obviously. Really, one of the fascinating things was that Chris told the studio that he wanted to direct all the action stuff himself, and not have a second unit. That seems insane, but actually, Chris and I both feel that it also feels insane to us to have somebody else do those scenes. That was exactly what he said to the studio – why would I want to direct an action film where I hire another director to direct the action? It made all the sense in the world to me. Having worked on other pictures that have hired second unit directors, with all due respect to them, half the time all they’re delivering is what the first-unit director has asked them for. And sometimes if the director doesn’t approve then there are re-shoots, and it wastes a ton of money. Chris was spot-on with his understanding of how dysfunctional that system can be, so that was a big part of his philosophy to do it himself. I loved the idea."