First President of the University of Virginia; President of University of North Carolina and Tulane University

commander of nautlius (1st atomic submarine)

Governor of Missouri (2005-09)

Astronaut - Former NASA Administrator

Former U.S. Senator from Alabama (1981-1987); Author of 'When Hell Was In Session'

U.S. Representative from New York

U.S. Senator from Arizona (1987-present), Republican nominee for President 2008

Retired Marine Corps officer who served as National Security Advisor to Ronald Reagan from 1983-1985. Was a leading architect of the Strategic Defense Initiative (SDI). Pleaded guilty to charges related to the Iran-Contra affair

Inventor; 'Father of GPS'

Former National Security Advisor (1985-1986)

Secretary of Veterans Affairs (2001-2005; 1992-1993)

Flight scientist, Kennedy Space Center Director

U.S. Representative from Pennsylvania (2007-2011)

Former Director of the CIA (1977-1981)

American oceanographer, explorer and marine policy specialist

Secretary of Energy 1989-1993, Former Chief of Naval Operations

Host of Montel Williams Show

Democrat-Texas; US House of Representatives (73-97), subject of book/movie 'Charlie Wilson's War'

U.S. Senator from Indiana (2017-??); U.S. Representative from Indiana (2011-17)