You shouldn't stare at people.
Elaine's connecting flight is delayed, and she is facing a lenthy layover at O'Hare.
Elaine wants to be safe while waiting for her plane.
Elaine focuses on reading a book and keeps to herself.
Elaine takes close visual notice of the other people in her area.
The other people in the airport pay her no mind and go about their business.
Security personnel think Elaine's behavior is suspiscious and take her into custody for questioning.