Day 5: 9:00am-10:00am

Summary
Beresch informs the hostages that their survival is dependent on their cooperation. A hostage reaches for his cellphone, but is promptly executed. Beresch demands that all the remaining hostages hand over their pagers and cellphones, then call the police outside, reminding them that he and his men have explosives wired to their vests.

Jack remains hidden as Beresch's men search for Chevensky, and sneaks his way into the ceiling. He uses his cellphone to call CTU, informing Bill and Audrey of the hostage situation. Bill suggests that Jack sneak out the airport and turn himself in, but Jack insists that they need him as an inside man. He uses his phone's camera to take pictures of the terrorists, then hangs up to search for a better vantage point. Bill tells Audrey to notify President Logan of the hostage situation.

Logan and Suvarov are about to begin the summit, which is described as a tribute to Palmer's legacy, when Novick informs them of the hostage situation.

Spenser sends plans of the airport terminal to Jack's phone, while Edgar attempts to match photos of the terrorists to their database. He manages to identify Beresch as a former officer in the Russian Army. Chloe is called in to assist in his data mining.

Beresch dons a mask and makes a televised broadcast, where he announces that he will execute all of the hostages unless the summit is abandoned. The President has 90 minutes to comply.

Curtis meets with police outside the airport, setting up a makeshift command post. He calls Jack, who agrees to coordinate his assault team from the inside. Diane approaches Curtis during the phone call, telling him that Derek is still inside. Jack promises to bring Derek safely outside.

Bill forwards Logan his intel on Beresch, as Logan tells him that he will not abandon the summit, so CTU must defuse the situation before Beresch's deadline is up. Chloe finds Beresch's phone number, and Bill attempts to negotiate with him. Beresch executes another hostage to remind them how serious he is. He then grabs Derek, threatening to execute him in fifteen minutes.

As Jack observes through his vantage point, a device on one of the terrorists' vest gets his attention. He photographs it and sends it to Chloe. She discovers its a device that can detonate the explosive vests by remote. She begins working on decrypting its frequency.

Aaron Pierce arrives to escort Martha to the garden room. Her assistant covers for her, as Martha searches for a transcript of her phone call with Palmer.

Curtis instructs his team outside the airport, and tells Bill they will be ready to take the terminal in 15 minutes.

As Beresch is about to execute Derek, Jack receives the detonator frequency and kills one of the terrorists. This buys time for Derek, as the other terrorists rush to find out what happened. Beresch concludes that the vest went off by accident.

Bill calls Logan, and tells him that Jack is coordinating their efforts from inside. Martha sneaks through the archives and finds what she is looking for just as Aaron realizes that she is not in her room.

Cummings calls Nathanson and tells him that Jack Bauer is coordinating the CTU assault team from the inside. He adds that Jack seems to have a personal connection to one of the hostages.

Jack is about to give final positions of the terrorists to Curtis, when Beresch unleashes a signal that scrambles Jack's cell phone. He then calls out to Jack, threatening to execute Derek unless he joins the hostages.