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The latest clip highlights the ins and outs of taping an underwater fight scene with actor Daniel Craig.
"Not only has he got to concentrate on the fight he's got to concentrate on the acting as well," says stunt coordinator Gary Powell in the video. "It's tiring because you're moving a lot more than you think you are -- just lifting your arm. There's more weight on it because you're underwater and all that."
Skyfall lands in UK theaters Oct. 26 and U.S. theaters Nov. 9. Watch how Craig and the actors train and how the directors safely film the action below: