Joe Stewardson

as Joram Barnard

as Dr Jim Hartwell

as Witherspoon

as Stevens

as Gen. Stafford

as Agent Johnson

as John Campo

as Prof. John Kenyon

as Air Controller

as Joe Hendersen

as Colonel Duncan Grey

as Matie Olivier

as Narrator

as Dr. Franz Von Leinsdorff

as Prof. Jonathan Carpenter

as Smollet

as Dr. Ben Schaeffer

as Narrator

as Flint (voice) (uncredited)

as Michael Jameson

as Will Maddox

as Tom Sheppard

as Ed Sloane