context: Jack Bauer is a nickname for the 24-year-old American television series. The character is played by Kiefer Sutherland. Jack Bauer, has undergone rigorous training and worked at various levels as a government investigator, including with the US Army - Delta Force, LAPD SWAT, CIA, and lastly at the Los Angeles Terrorism Prevention Unit (CTU).
question: Who is the protagonist of episode 24?
answers.text: Jack Bauer