 When LAX receives word from Homeland Security that a credible threat has put the airport on high alert, Harley and Roger debate over whether to notify the public or continue to keep the news a secret. Tensions build when passengers are faced with longer lines due to extra security, and Roger puts his relationship with his daughter in jeopardy when he refuses to let her fly -- forcing her to miss a very important recital. Meanwhile, Tony must take care of a senile old woman who has been left stranded at the airport by her son who can no longer bear the burden of taking care of her. Elsewhere, Henry loses his gun.