December 03, 2003
Delta Air Lines chief Leo F. Mullin last week announced plans to retire in the new year. Mullin will step down as CEO on Jan. 1 but will remain chairman until April 23. Gerald Grinstein, a 16-year Delta board member, will succeed Mullin as the carrier's CEO. John F. Smith, Jr., a former CEO of General Motors, will become Delta's chairman in April.