To make the connection back to Strategic Air Command….a film narrated by James Stewart…..X-15 is a 1961 American aviation drama film that presents a fictionalized account of the X-15researchrocket aircraft program, the test pilots who flew the aircraft, and the associated NASA community that supported the program. X-15 starred David McLean, Charles Bronson, James Gregory and Mary Tyler Moore (in her first feature film role).
See the film for free on Youtube:
Not a SAC film but a film showing the ‘hot’ new USAF planes circa 1956……..Toward the Unknown, originally called Flight Test Center and titled Brink of Hell in its UK release, is a 1956 American war film about the dawn of supersonic flight filmed on location at Edwards Air Force Base. Starring William Holden, Lloyd Nolan and Virginia Leith, the film features the screen debut of James Garner.
If you google this film can be watched but it is from a Russian video website -- so I have not entered the details.