Final answer:
Ignoring airport security rules can result in disciplinary action, as strict enforcement of these rules ensures traveler safety. Following 9/11, security was ramped up, introducing measures like sky marshals and reinforced cockpit doors, which have significant costs and opportunity costs.
Step-by-step explanation:
Taking shortcuts in security or failing to abide by the security rules and regulations of the airport may result in disciplinary action. Security measures at airports are strictly enforced to ensure the safety of all travelers. Ignoring these protocols can lead to consequences such as reprimands, fines, or more serious legal actions, depending on the severity of the infraction.
After the events of September 11, 2001, security measures significantly increased to prevent similar attacks. Procedures like the implementation of armed "sky marshals" and reinforcing cockpit doors were suggested, with the understanding that these measures have their costs, such as the opportunity cost of allocating funds towards these security enhancements rather than other public needs.