The crossword solution for the term 'JACK's Preceder' is IKE, which is a three letter acronym. IKE stands for Dwight D. Eisenhower, who was the 34th President of the United States from 1953 to 1961. He was a five-star general in the United States Army during World War II and served as Supreme Commander of the Allied Forces in Europe. Eisenhower was a Republican who advocated for nuclear disarmament and the Space Race. He was succeeded by John F. Kennedy in 1961.