Like Jason Bourne himself, this series continues to be an indestructible, efficiently engineered, no-nonsense machine. With lethal economy, Bourne (Matt Damon) constantly defies the odds and so, in terms of sequels, does his movie. The Bourne Ultimatum doesn’t flag, and it isn’t redundant. The fight and stunt sequences are, as before, taut, muscular and brutal, while director Paul Greengrass establishes a visual scheme based on surveillance. We’re constantly peering around a corner, from behind someone’s head or through a camera (if not a gun scope). It’s an atmosphere of continuous, crackling tension.