canisters. This turns out to be Wilshire Gas Co. By incinerating the pipelines, Jack stops the nerve gas from being released and captures Vladimir Bierko. Through the assistance of Wayne Palmer (David Palmer's brother) and Evelyn Martin (Special Assistant to the First Lady), Jack discovers that President Logan is responsible for the attacks. He is at the center of a conspiracy involving Cummings, Henderson, Nathanson, a mysterious man known as Graem and a group of men who monitor and influence the actions of Logan from an undisclosed location. Jack and Wayne retrieve a recording that implicates Logan from a bank vault and attempt to turn it over to U.S. Secretary of Defense James Heller. However, Heller's plan to get Logan to quietly resign backfires when Christopher Henderson uses Audrey as leverage to get the recording from Jack. Jack and Audrey recapture Henderson but they find that he has passed the recording on to a co-conspirator aboard a diplomatic flight. Jack boards the plane and reclaims the recording by taking the co-pilot hostage. This triggers a response from Charles Logan who tries to have the plane shot down, citing that it could be used to attack civilian targets on the ground. This causes others in Logan's inner circle to become suspicious of his motives. Jack Bauer lands the plane and delivers the recording to CTU. Logan decides to commit suicide to avoid the spectacle of a public trial, but before he can do so, a Homeland Security employee intervenes and destroys the recording, and is rewarded with a promotion by Logan. Meanwhile, Bierko escapes CTU custody, and uses his last nerve gas container to take over a Russian submarine and gain control of twelve multiple-warhead non-nuclear land-attack missiles, each one capable of wiping out several city blocks. After cutting a deal with Christopher Henderson, Jack and Henderson together stop the attack from the submarine, and kill Bierko and his men. During a final standoff, Jack kills Henderson, who tried to shoot Jack with an unloaded pistol. With the help of the First Lady, Mike Novick, Aaron Pierce, and Chloe, Jack is able to hijack Marine One and attempts to force Logan to confess. Though this venture proves unsuccessful, Jack manages to place a listening device on Logan. Martha then fakes a breakdown and tricks Logan into admitting his crimes, all of which is recorded on the device Jack planted on him.