A technical malfunction sends American bombers to Moscow to deliver a nuclear attack. Can all-out war be averted?

Director: Sidney Lumet.

Screenplay by Walter Bernstein.

Based on the novel by Eugene Burdick and Harvey Wheeler.

Producers: Charles H. Maquire and Max E. Youngstein.

This last Western from director John Ford ranks as one of his most ambitious and moving works.

Ford outfits his Trail-of-Tears-like saga with a strong cast, stunning cinematography by long-time collaborator William Clothier and a stirring Alex North score.

To play the Cheyenne nation desperately struggling to return to the Yellowstone homeland across 1,500 treacherous miles, Ford recruited hundreds of Navajo tribesmen, many of them veterans of Ford movies dating back to 1939's Stagecoach.

The location (which Ford used for the ninth time) is "John Ford Country" - the canyons, buttes and mesas of Monument Valley. And Cheyenne Autumn is compassionate, epic artistry from one of Hollywood's most revered filmmakers.

Director: John Ford.

Based on Mari Sandoz's extraordinary novel, "Cheyenne Autum."

Based on Howard Fast's novel, "The Last Frontier."

Screenplay by James R. Webb.

Producers: John Ford and Bernard Smith.

Composer: Alex North.

Farmers from a village exploited by bandits hire a veteran samurai (Toshiro Mifune) for protection, and he gathers six other samurai to join him.

Director: Akira Kurosawa.

Screenplay written by Akira Kurosawa, Shinobe Hashimoto and Hideo Oguni.

Producer: Sojiro Motoki.

Composer: Fumio Hayasaka

This movie has been remade as:

1960's The Magnificent Seven - with Yul Brenner

1967's Kill A Dragon

1979's Duel of the Seven Tigers

1980's Battle Beyond the Stars

1983's The Seven Magnificent Gladiators

1991's Shams el-Zanati

1993's Dikiy Vostok

1998's China Gate

1998's Joe D'Amato's 'Outlaws'

1999's The Final Assault

2014's TV Series - Samurai 7

2013's The Magnificent Seven -with Denzel Washington (a remake of a remake of the original)

2016's The Magnificent Seven Gladiators