- When Bruce Willis was trying to take a dangerous shot, Li Meiqi broke his head and was sent to the hospital to stitch 28 stitches.
- "Die Hard 4" also used the subtitle.
- The title of the French version of the film was translated into.
- whodaughter Lucy auditioned for the role, but her temperament does not meet the vision for the role of director.
- Bruce Willis’ stand-in actoraccidentally fell from a 25-foot height while shooting the film, and the filming work was forced to terminate.
- For commercial considerations, the positioning of the film during editing is PG-13.
- In order to film the film, the main highway to Los Angeles International Airport was closed for 12 days to cope with the filming of the crew.
- During the shooting in downtown Baltimore and Los Angeles, public protests continued due to traffic jams in the downtown area.
Live Free or Die Hard behind the scenes gags
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Jack Parry: Jack Parry, the NSA. Chuck Summer, DHS Liaison. The White House made the call. Anything you need, we're here to help.
Deputy Director Miguel Bowman: Help? Wow, that's, that's great.
Jack Parry: We're gonna need some work space for our people. What can you do for us?
Deputy Director Miguel Bowman: Well, as you can see, we're using the space, so you guys can go stand in the corner and liaise. And if I need something, I'll just wave to you.
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Deputy Director Miguel Bowman: Gabriel's not exactly people-friendly.
John McClane: You think so?