Eisenhower was on his own train, the "Look Ahead, Neighbor", stumping through Missouri, and on the morning of the 19th, his campaign staff made him aware of the gathering storm. Eisenhower publicly called upon Nixon to release all documents relating to the Fund, somewhat to the dismay of Chotiner, who wondered, "What more does the general require than the senator's word?" Eisenhower aides contacted the senior Republican senator from California, William Knowland, and persuaded him to fly from Hawaii to join the Eisenhower train and be available as a potential replacement running mate.