Factual error: In the airport scene, this is not Dane County Airport as shown, as they do not use letters for their gates (A, B and C shown). They use numbers (1-13) instead. (00:03:10)
Factual error: The battery of the electronic goggles used by Gray should be dead after 20 years. (01:09:30)
Answer: Chances are either the gates were left open after the Pterosaur attack to allow visitors to escape quickly, or Hoskins had left them open earlier and forgot to close them to try and justify using the raptors as weapons.