, California, showing the main base area located beside
Rogers Dry Lake, both featured in
Toward the Unknown Like some other major stars of the era, Holden decided to try producing films himself, setting up Toluca Productions. In the end, however, he found the added work too much, and
Toward the Unknown was the only Toluca film. As originally cast, starring roles had
Clark Gable as General Banner and
Gregory Peck as Major Bond, but contractual problems required a recasting, with Holden taking on the role of star as well as producer.
James Garner, who made his film debut in the movie, says director Mervyn LeRoy tried to "whip" him. "I jumped right back at him," he said. "He was famous for it, he'd just pick one guy and lord it over him for the whole picture. If he hadn't taken his pills early in the morning, he was nasty."
Toward the Unknown was produced with the full cooperation of the United States Air Force with principal photography taking place over the winter in 1955. As the first film to exploit the USAF's race into space in the
X-plane program, the
Toward the Unknowns tagline stated: "The screen's first story of man-piloted rocket ships, U.S.A.!" The extensive use of the Edwards AFB facility and its emergency dry lake beds,
Rosamond Lake and
Rogers Dry Lake, as well as the related air force community area, lend an air of authenticity to the production. Holden's character closely parallels three USAF pilots, Colonel
Walker "Bud" Mahurin, an Air Force double ace who was shot down in Korea and tortured before signing confessions of war crimes, Lieutenant Colonel Everest, who had a similar prison experience after being shot down in China during World War II, and Capt.
Milburn G. Apt, who died after losing control of the X-2 minutes after becoming the first pilot to exceed Mach 3. Holden and Everest, who was acting as the film's "air boss", became close friends during the production. In a similar manner, General Banner's character was based on Major General
Albert Boyd, the first Commander of the USAF Flight Test Center at Edwards AFB.
Aircraft as the Gilbert XF-120 fighter with an
F-100 chase plane in tow
Toward the Unknown was a showcase of the contemporary United States Air Force fleet of combat aircraft:
Convair C-131 Samaritan,
Convair F-102 Delta Dagger,
Douglas B-66 Destroyer,
Lockheed F-94 Starfire,
McDonnell F-101 Voodoo,
North American F-86 Sabre,
North American F-100 Super Sabre,
Republic F-84F Thunderstreak, and
Sikorsky H-19D Chickasaw, shown on the ground and in the air. Unusual stock footage includes a
rocket sled being tested, the use of the
Boeing YKB-29T Superfortress aerial tanker with a F-100, F-101, and B-66 being fueled, and a
Republic EF-84G Thunderjet in a
zero-length launch. Also appearing in background shots were the
Beech C-45 Expeditor,
Boeing B-47 Stratojet,
Convair B-36 Peacemaker,
Douglas C-47 Skytrain,
Lockheed T-33 Shooting Star,
North American B-25 Mitchell,
North American B-45 Tornado, and the
Republic F-84 Thunderjet. The
Bell X-2, its
Boeing EB-50D mother ship,
Douglas D-558-2 Skyrocket, and
Douglas X-3 Stiletto are also featured as the experimental aircraft being tested at Edwards AFB. ==Reception==