About John Frankenheimer:
John Michael Frankenheimer was an American film and television director known for social dramas and action/suspense films. Among his credits were Birdman of Alcatraz (1962), The Manchurian Candidate (1962), Seven Days in May (1964), The Train (1964), Seconds (1966), Grand Prix (1966), French Connection II (1975), Black Sunday (1977), and Ronin (1998).
I've found that the more experts you have on a movie, the less control the director has.
John Frankenheimer