Cruise will be an executive producer and demand the role of Anttila because of it. It's no problem, he rationalizes, since he'll be almost 5' 7" on skates. They'll be using stock footage and stuntmen for the actual action scenes anyway. And the most of the movie will actually happen on the flight home, when Anttila recalls this unlikely miracle to a reporter (played by Brad Pitt) sitting across the aisle. And Cruise will have no trouble reaching Anttila's heights in those shots, because he'll be sitting on his wallet.