John Keeler

John Keeler was the President of the United States, starting in 2008.

Election
As a Republican Senator, Keeler challenged Deomocratic incumbent David Palmer in the election for President. After Palmer abruptly withdrew from seeking re-election, Keeler went on to win the election.

Day 4
Keeler was oboard Air Force One when Secretary of Defense James Heller and his daughter were briefly abducted by terrorists working for Habib Marwan and well as when Marwan's people sabotaged several nuclear reactors in order to create a meltdown.

Though control of the reactors was restored, the indicent had the added effect of keeping Air Force One in the air much longer than intended for the President's safety. During the incident, Mitch Anderson, a disgraced Air Force captain working for Marwan, managed to steal a stealth fighter and fire on Air Force One.

Though Anderson's fighter was quickly shot down by Air Force One's escorts, the 747 lost control and crashed. Rescue workers managed to located the President alive (albeit in critical condition), though his son Kevin Keeler and several others did not survive.

During President Keeler's incapacitation, the cabinet unanimously voted to invoke the 25th Amendment and appoint Vice-President Charles Logan as acting-President. When last mentioned, President Keeler was still in critical condition and his fate was not resolved when the season ended.

Background Information
Keeler was originally inteneded to die in the attack on Air Force One, though FOX executives apparently balked at the idea of killing off the President, and so he was kept alive but critically injured.

It is believed Logan will still be President in Season 5, suggesting Keeler may have died or not fully recovered from his injuries (or possibly from the death of his son).