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Omar (Marc Casabani) is willing to talk, and Jack (Kiefer Sutherland) has to find out where the real bomb is. Omar admits that he's working for Syed Ali (Francesco Quinn), but he doesn't know about the second bomb. While Jack interrogates him, Kate (Sarah Wynter) sees Marie (Laura Harris), in disguise, trying to leave the airport. Kate tells a security guard to alert Jack, and goes after her sister. Marie gets the jump on Kate, holds her at gunpoint and demands her ID badge. Kate refuses, and Marie seems like she's about to shoot Kate before Jack shows up, in the nick of time, and shoots her in the arm. Jack uses force to interrogate Marie about the location of the bomb. Kate tries to reason with her, to no avail. Marie finally lies to them in an effort to send them on a wild goose chase, but Jack sees through it, and realizes the second bomb is at the airport. Palmer (Dennis Haysbert) accuses Sherry (Penny Johnson Jerald) of collaborating with Stanton. Sherry claims she was just trying to earn Stanton's trust so that she could find out what he was planning. She has a CIA man corroborate her story, but Palmer still doesn't trust her, and commands her to leave. Kim (Elisha Cuthbert) realizes that Lonnie (Kevin Dillon) lied to her about the explosion, and tries to escape the bomb shelter. Carrie Turner (Lourdes Benedicto) shows up at CTU to replace Paula. She clearly has some kind of unpleasant history with Michelle (Reiko Aylesworth). Mason (Xander Berkeley) is too sick to continue working. He officially hands the reigns over to Tony (Carlos Bernard) and walks out.