Revealing mistake: When Jackson destroys the helicopter, it is a scale model: noticeably shorter than the real aircraft and lacking many of its details.
Revealing mistake: During the Army assault on Ortega's compound, Jackson is shown as he uses a machine gun to clear a long balcony of enemies. The third person he kills here is hit several times, but does not fall over the railing. Instead he slowly and carefully climbs over it, lifting one leg over at a time.
Revealing mistake: As Joe jumps over the wall with the motorcycle, you can see that it's a stuntman performing the actual jump. His hair is longer and darker than Michael Dudikoff's.
Revealing mistake: During the ambush scene at the beginning of the film when the ninjas are sent after Armstrong and Patricia, an American casualty can be seen getting up while he is supposed to be dead. (00:10:35)
