From Wikipedia, the free encyclopedia. Sean C. Casey is an IMAX filmmaker and professional storm chaser who appears in the American documentary reality television series Storm Chasers. Casey created an IMAX film called 'Tornado Alley' about chasing tornadoes and had to build the Tornado Intercept Vehicle (TIV) and the Tornado Intercept Vehicle 2 (TIV2) to film inside a tornado. Tornado Alley, was released worldwide on March 18, 2011. Casey has been named one of the 50 best minds of 2008 by Discover Magazine. Description above from the Wikipedia article Sean Casey (filmmaker), licensed under CC-BY-SA, full list of contributors on Wikipedia.