Revealing mistake: In the sequence in which Antoine Sartain throws a flare to set fire to the car with the two dead bodies, you can see it hit the floor from the left, but the fire comes from a complete different angle. (00:22:50)
Revealing mistake: In the scene where Harrison Ford is chasing Isaiah Washington through the building (at the beginning of the chase), Ford climbs out a window and then falls back into a multi-paned window which breaks. As he is getting up, if you look at the top pane of glass (still intact) you can see dents and such making it quite obvious that the glass was fake.