William Devane played Secretary of State Lewis Berryhill. He has starred in a number of movies and television series, including The Missiles of October, where he starred as John F. Kennedy alongside Martin Sheen who played Robert F. Kennedy. He also starred in the films Marathon Man, Payback, Space Cowboys (with James Cromwell). He starred in the telvision series Knots Landing and Seasons 4-6 of 24.