Nearly all of the events in this movie are true. The movie centers on the incident in February 2003, a call was made to a McDonald's in Hinesville, Georgia.
A message displayed before the film starts refers to the Milgram experiment, and says that the story, inspired by real events, is so shocking it is hard to believe, but that nothing was exaggerated.
When the police are collecting computer surveillance footage as evidence from the restaurant's computers, a policeman takes out a CD/DVD reader claiming it has all the backups for all the systems. He should be taking the computer's hard-drives as evidence.