The plastic gun used by the female hijacker is the same one used by the assassin in In the Line of Fire (1993).
There's a lot of innocent people on this plane.
Peter Cronin: Hope the authorities appreciate that.
The entire plot of this film is implausible. Prisoners are normally transported on unmarked aircraft operated by the Justice Prisoner and Alien Transportation System (also known as "Con Air"), not civilian passenger flights. Such aircraft are also normally handled at military airports, not commercial ones. Furthermore, flight schedules and manifests are confidential, kept away from public view and known only to those directly involved in the operation. All of the aforementioned factors exist specifically for the purposes of deterring escapes or sabotage, and preventing harm to bystanders.