Lester Siegel (played by Alan Arkin) is said to be a composite character. However, in real life, the make-up artist Robert Sidell, a friend of John Chambers, posed as the fake film's producer. Sidell's wife, Andi, was the fake production company's receptionist. Ben Affleck assumed that Sidell, like Chambers, had passed away, but he was informed just before the film's release that he was still alive and well. Affleck had Robert Sidell flown to the film's premiere in Los Angeles, and in his opening remarks, he gave recognition to Sidell for his part in the mission.