Aaron Eckhart character Dr. Josh Keyes
Hilary Swank character Maj. Rebecca Childs
Delroy Lindo character Dr. Ed 'Braz' Brazzleton
Stanley Tucci character Dr. Conrad Zimsky
Tchéky Karyo character Serge
DJ Qualls character Theodore Donald 'Rat' Finch
Richard Jenkins character Gen. Thomas Purcell
Bruce Greenwood character Cmdr. Robert Iverson
Christopher Shyer character Dave Perry
Ray Galletti character Paul
Eileen Pedde character Lynne
Rekha Sharma character Danni
Tom Scholte character Acker
Glenn Morshower character FBI Agent
Anthony Harrison character FBI Agent
Alfre Woodard character Stickley
Fred Keating character Court-Martial Presiding Officer
Bart Anderson character Dad
Nicole Leroux character Mom
Justin Callan character Little Boy
Chris Humphreys character GBTV Reporter - Trafalgar Square
Dion Johnstone character Flight Engineer Timmins
Fred Ewanuick character Endeavor Flight Engineer
Hrothgar Mathews character Chief Engineer Mission Control
Ming-Tzong Hong character Scientist
Jennifer Spence character Zimsky's Assistant
Michael St. John Smith character Pentagon General
John Shaw character FBI Agent - Rat's Apartment
Nickolas Baric character Security Policeman - Tribunal
Rosa Di Brigida character Rome Café Patron
Roberto Roberto character Rome Café Patron
Ermanno De Biagi character Rome Café Patron
Marcello Laurentis character Rome Café Patron
Matt Winston character Luke Barry
Claire Riley character News Anchor
Marke Driesschen character News Anchor
Laurie Murdoch character Project Destiny Engineer
Costa Spanos character Project Destiny Engineer
Monique Martel character Paris Café Lady
Lenie Scoffié character Paris Café Lady
Nathaniel DeVeaux character U.S.S. Constellation Captain
Robert Manitopyes character U.S.S. Constellation Screen Ops
Alejandro Abellan character U.S.S. Soldier (uncredited)
Benjamin Barton character Scientist / Extra (uncredited)
Angelica Hayden character Coffeehouse Patron (uncredited)
Robert Paul Lewis character Beach-goer (uncredited)
Alec Medlock character (voice) (uncredited)
Alonso Oyarzun character Security Policeman (uncredited)
Priscilla Poland character Scientist (uncredited)
Shawn Green character Himself
Greg Bennett character Technician - Virgil Base
Jeffrey Gold character Engineer (uncredited)
Rick Kain character Chief Petty Officer (uncredited)
Pamela Martin character News Anchor (uncredited)
