The document provides an analysis of how the opening sequence of the film "The Taking of Pelham 123" establishes suspense. It does this through 3 main techniques: 1) Using ambient noise and imagery of a bustling city to set the scene and imply something significant will happen. 2) Introducing the main characters through titles against a fast-paced backdrop that makes them seem threatening. 3) Escalating small problems on the subway train to generate intrigue about what larger event may unfold.