Passengers might incorrectly plan on needing 15 minutes to get through security. They might miss their flight because it actually took more than 15 minutes to get through security, or they might end up bored at the terminal because it took less than 15 minutes to get through. | Passengers might incorrectly plan on needing more or less time than 15 minutes to get through security. They might rush to get to the airport because they think security will take more than 15 minutes, or they might miss their flight because they thought it would take less than 15 minutes.