In 1994, Colin Green began work on previsualization for "Judge Dredd" (1995). Green had been part of the Image Engineering department at Ride Film, Douglas Trumball's VFX company in the Berkshires of Massachusetts, where he was in charge of using CAD systems to create miniature physical models (rapid prototyping). "Judge Dredd" required many miniature sets and Green was hired to oversee a new Image Engineering department. However, Green changed the name of the department to Previsualization and shifted his interest to making 3D animatics. The majority of the previsualization for "Judge Dredd" was a long chase sequence used as an aid to the visual effects department. In 1995, Green started the first dedicated previsualization company, Pixel Liberation Front.