Discovery show on 'president's gatekeepers' has perfect participation record

PASADENA, Calif. - Makers of a Discovery cable TV network documentary on presidential chiefs of staff have a perfect participation record.

All 19 living men who have held that job gave interviews for "The Presidents' Gatekeepers." The four-hour documentary is expected to air in two parts early this summer.

Filmmakers Jules and Gedeon Naudet said Saturday that their well-regarded previous documentary on the Sept. 11, 2001, terrorist attack in New York was a calling card that probably helped them convince some former chiefs to participate.

Their longest interview was with former Vice-President Dick Cheney, who was President Gerald Ford's chief of staff in the 1970s. Cheney said a chief is more powerful than a vice-president.