This vintage featurette for The Empire Strikes Back takes viewers through the film's famed asteroid field sequence, overlayed with the original storyboards. Storyboards are essential to the preproduction of a movie, as they map out how scenes will visually appear. As seen here, interior cockpit shots, TIE fighters colliding with asteroids, and the Millennium Falcon docking inside a larger asteroid all appear as storyboards almost exactly as they would be seen in the final film.