Ideally, the leader of the assault team gathers all available intelligence about the crisis scene, targets, and innocents. The leader diagrams and discusses the proposed plan, outlining each
teamís actions and responsibilities, location, fields of fire, and special tasks (even to the point of a wall-by-wall and door-by-door layout of the objective, where available). Since the
assault team usually already has specialized training, the operation is based on well-understood, pre-established standing operating procedure. When considerable preparation time is
available, the team sometimes conducts step-by-step walk-through exercises on a mock-up that duplicates the target environment.