This is a set of two sensors that were used for filming. Both sensors are the hero light-up style In this dizzying, effects-driven drama, two scientists (Helen Hunt and Bill Paxton) chase tornadoes in their quest to record and study them. Taking a backseat to the wild and visually mesmerizing storms are subplots concerning a failing marriage, childhood trauma and corporate ethics. The film received multiple Academy Awards for its spectacular sound and visual effects (including the famous flying cow).