Patrick Muldoon
Mike Connors
Theresa Russell
Dr. Nancy Burnham
Curtis Armstrong
Keach
Tamara Davies
Sid Bream
Lydie Denier
Diane Cafferty
John Beck
Simpkins
Daniel Quinn
Alan Stanton
James Cromwell
MP 1
Joe Sabatino
MP 2
Rod McCary
Dr. Shoup
Lorissa McComas
Chelsea
Andy Milder
Chambers (Head of NASA)
Rene Rivera
Gonzales
Tim Thomerson
Sheriff Morgan
Adam Lieberman
Crewman Terrance
Redmond Gleeson
Local Man
GiGi Erneta
Girl by Pool (uncredited)
Todd Kimsey
Crewman Mitchell
Joe Avalon
Sgt. Tulley
Billy Keane
Steve Elkins
William Langlois
General Cartwright
Eric James Virgets
Deputy Ferguson
Steve Purnick
Mr. Norton
Dwayne Shattuck
Crewman Miller