Bob Lloyd Schieffer (born February 25, 1937) is an American television journalist who has been with CBS News from 1969 until his retirement in 2015, serving as anchor on the Saturday edition of CBS Evening News for 23 years, from 1973 to 1996, as well as chief Washington correspondent from 1982 until 2015 and moderator of the Sunday public affairs show Face the Nation from 1991 until May 31, 2015. From March 2005 to August 31, 2006, Schieffer was interim weekday anchor of the CBS Evening News and was subsequently one of the primary substitutes for Katie Couric and Scott Pelley.