While “running the numbers,” Reese discovers some irregularities and goes on a fishing expedition. He finds blueprints of the Batmobile (aka the Tumbler) and—correctly!—concludes that Bruce Wayne is Batman. One of the funnier moments in the movie is here, where Reese attempts to blackmail Wayne Enterprises by confronting Lucius Fox about this discovery. Suffice it to say that he hadn’t crunched all of the relevant numbers.