Guillermo del Toro's Pacific Rim took the concept of giant monsters fighting giant robots and realized it with all the detail and beauty that modern visual effects can provide. Industrial Light & Magic was key to bringing that vision to life, and in this new featurette ILM goes behind the scenes to describe how the film's signature sequence — an epic battle that lays waste to Hong Kong — came to be. It's a combination of modern-day computer wizardry and old-fashioned practical effects work, albeit with a 3D-printed twist.