Charles Bronson ( X-15
)
James Stewart ( X-15
)
James Gregory ( X-15
)
Kenneth Tobey ( X-15
)
Brad Dexter ( X-15
)
Mary Tyler Moore ( X-15
)
Patricia Owens ( X-15
)
Ralph Taeger ( X-15
)
Lisabeth Hush ( X-15
)
Stanley Livingston ( X-15
)