How does Dwayne Johnson spend his 42nd birthday? On a movie set, of course. Best wishes go out to the action icon as he continues to shoot the disaster thriller San Andreas. Alexandra Daddario and Carla Gugino co-star in this latest adventure from Journey 2: The Mysterious Island director Brad Peyton, which finds a helicopter pilot attempting to rescue his daughter after a devastating earthquake hits California. Watch as The Rock goes rappelling out of a helicopter and into a canyon...