Bradford Dillman
Dobler
Acting
Priscilla Barnes
Claire
Acting
Daryl Haney
O'Neill
Writing
Mel Ryane
Barbara
Acting
Eb Lottimer
Seaver
Acting
Gregory Sobeck
Engel
Acting
Richard Young
Chadwick
Acting
Stephen Davies
Fernandez
Acting
John Lafayette
Shuttle commander
Acting
Michael Adams
Shuttle crewman
Acting
Karen Winograd
Shuttle crewwoman
Acting
Roger Corman
Corporate executive (uncredited)
Production