Walt Cummings was the White House Chief of Staff under President Charles Logan during Day 4 and Day 5. At the end of Day 4, Cummings was the driving force behind the decision to have Jack Bauer killed in order to prevent him from possibly exposing secrets to the Chinese. During Day 5, Cummings was exposed by Bauer as a member of a conspiracy within the United States government, and believed (falsely) that he was the leader of the plot. Shortly after, Cummings was killed and framed as a suicide on the orders of President Logan and Graem Bauer to protect their involvement.