as Smollet
as Colonel Duncan Grey
as Joe Hendersen
as Dr Jim Hartwell
as Flint (voice) (uncredited)
as Air Controller
as Joram Barnard
as Matie Olivier
as Michael Jameson
as Agent Johnson
as Dr. Ben Schaeffer
as Gen. Stafford
as Will Maddox
as Prof. Jonathan Carpenter
as Ed Sloane
as John Campo
as Narrator
as Witherspoon
