The plot to rob the Federal Reserve in Die Hard with a Vengeance was so detailed the FBI interviewed the writer. Turns out the plan was based on publicly revealed information, and would have worked.

Xpost r/Movie_Trivia: Screenwriter Jonathan Hensleigh was interviewed by the FBI because of the detail in his script. They wanted to know how he knew so much about the Federal Reserve, the connected subway spur, aqueduct, etc.He simply told them the truth - the Federal Reserve let him look around as research. They showed him the plans, told him about the subway spur, and the aqueduct was mentioned in a magazine.He was worried they were going to arrest him at first, but they ended up telling him that the plan in the film was actually feasible, and made changes to ensure it wouldn't work in future. via /r/movies http://bit.ly/2sUnhIE