A big part of the "Smallville" series relies on the effects it delivers, whether digital (CGI), physical, or special make-up effects. The effects shots, part of the post-production work, were originally developed and added in Los Angeles. At the start of season two, Entity FX, which is based in Santa Monica, California, became the primary special effects team. One of the first jobs the team had was creating the tornado that would suck up Lana in the season two opener, as well as creating the truck that would disintegrate around her as the winds from the tornado pulled it apart. Mat Beck, the visual effects supervisor, describes the effects used to create the tornado as being similar to the techniques used to create the Balrog in "The Lord of the Rings" trilogy. For the scene of Lana's truck spinning around in the tornado, Mat Beck used "animated sprites of real smoke that flew around following particles". Visual effects supervisor John Wash filmed debris hanging from a green screen, like loose straw and mailboxes, which he would "swirl around" the stage. The truck was then built on a computer by Jon Han, who created individual pieces—engine block, fenders, and other similar parts—that he would rip off to give the appearance of the truck breaking apart. Welling and Kreuk were filmed with tracking marks, which the computer used to line up the digital truck around them.