Answer the following question: Chuck Hagel - Charles Timothy Chuck Hagel (/tk hel/ CHUK HAY-gl; born October 4 1946) is an American politician who is the 24th and current United States Secretary of Defense serving since 2013. He served as a United States Senator from Nebraska from 1997 to 2009.A recipient of two Purple Hearts while an infantry squad leader in the Vietnam War Hagel returned home to start careers in business and politics. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
Answer:
Office Holder