Factual error: The open credit sequence takes place at the Atlanta Airport (Hartsfield Jackson), signs are throughout the Delta terminals, Boston Airport announcements are dubbed in until we see John Cusack come off the airplane.
Continuity mistake: The chef at the airport stabs someone, but the knife blade is clean afterwards; moments later he stabs it through the valise, and it is covered in blood.
Factual error: One of the phone crazies runs into an identifiable Ponderosa Pine tree. There are no Ponderosa Pine trees within a thousand miles of Boston.
