Question: What occupation do Sidney J. Furie and Charles Vidor have in common?

Context articles: Iron Eagle II
The Jazz Singer (1980 film)
King Vidor
Iron Eagle on the Attack
Little Fauss and Big Halsy
The Boys in Company C
Charles Vidor
Sidney J. Furie
Direct Action (film)
The Dependables

Iron Eagle II is a 1988 Israeli-Canadian-American action film directed by Sidney J. Furie.
 It is the first sequel to the 1986 film "Iron Eagle", with Louis Gossett, Jr. reprising his role as Charles "Chappy" Sinclair.
 An uncredited Jason Gedrick also returns as ace pilot Doug Masters in the film's opening scene.
The Jazz Singer is a 1980 American drama film and a remake of the 1927 classic "The Jazz Singer", released by EMI Films.
 It starred Neil Diamond, Laurence Olivier and Lucie Arnaz and was co-directed by Richard Fleischer and Sidney J. Furie.
King Wallis Vidor ( ; February 8, 1894 – November 1, 1982) was an American film director, film producer, and screenwriter whose career spanned nearly seven decades.
 In 1979, he was awarded an Honorary Academy Award for his "incomparable achievements as a cinematic creator and innovator."
 He was nominated five times for a Best Director Oscar, and won eight international film awards during his career.
 Vidor's best known films include "The Big Parade" (1925), "The Crowd" (1928), "Stella Dallas" (1937), and "Duel in the Sun" (1946).
 (He is not related to fellow director Charles Vidor).
Iron Eagle on the Attack, also known as Iron Eagle IV, is a 1995 American-Canadian direct-to-video action film directed by Sidney J. Furie and is the fourth installment in the "Iron Eagle" series.
 It stars Louis Gossett, Jr. reprising his role once again as retired Gen. Charles "Chappy" Sinclair.
 Doug Masters, the protagonist of the first film, returns, but is played by Jason Cadieux instead of Jason Gedrick.
 The film's opening scene is an alternate take on that of "Iron Eagle II", wherein Doug survived after being shot down in Soviet Airspace.
Little Fauss and Big Halsy is a 1970 film directed by Sidney J. Furie, starring Robert Redford and Michael J. Pollard, also featuring Lauren Hutton, Noah Beery, Jr. and Lucille Benson.
The Boys in Company C, directed by Sidney J. Furie, starring Stan Shaw, Andrew Stevens, Craig Wasson, James Canning, and Michael Lembeck, is a 1978 film about United States Marine Corps recruits preparing for duty, and their subsequent combat in the Vietnam War.
 It was among the first Vietnam War films to appear after the Vietnam Era, and was also the first role for R. Lee Ermey of "Full Metal Jacket" fame.
 "The Boys in Company C" is the first in Furie's Vietnam War motion picture trilogy, followed by 2001's "Under Heavy Fire" and 2006's "The Veteran".
Charles Vidor (July 27, 1900June 4, 1959) was a Hungarian film director.
Sidney J. Furie (born February 28, 1933) is a Canadian film director, screenwriter, and producer best known for his extensive work in both British and American cinema between the 1960s and early 1980s.
 Like his contemporaries Norman Jewison and Ted Kotcheff, he was one of earliest Canadian directors to achieve mainstream critical and financial success outside their native country at a time when its film industry was virtually nonexistent.
 He won a BAFTA Film Award and was nominated for a Palme d'Or for his work on the acclaimed spy thriller "The Ipcress File" starring Michael Caine.
Direct Action is a 2004 action film directed by Sidney J. Furie and starring Dolph Lundgren.
The Dependables (previously known as "Pride of Lions") is a 2014 straight-to-DVD family action film directed by Sidney J. Furie.