Richard Norman Perle (born September 16 1941) is an American political advisor consultant and lobbyist who began his career in government as a senior staff member to Senator Henry "Scoop" Jackson on the Senate Armed Services Committee in the 1970s. Later he was heavily involved with the Reagan administration and served as the assistant Secretary of Defense and also worked on the Defense Policy Board Advisory Committee from 1987 to 2004. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
Office Holder