In the highly anticipated upcoming film "Mission: Impossible - Dead Reckoning Part One," Tom Cruise showcases his fearless nature once again by performing a series of death-defying stunts. A recently released featurette delves into the making of the film and reveals that Cruise learned how to speed-fly, a sport described by director Christopher McQuarrie as "one of the most dangerous sports in the world." Speed-flying is a sport that may appear similar to skydiving, but McQuarrie emphasizes