Sheriff Bryce Hammond
Ben Affleck
Dr. Timothy Flyte
Peter O'Toole
Scientist Talbot
John Hammil
Scientist Shane
John Scott Clough
Soldier Velazquez
Michael DeLorenzo
Scientist Borman
William Hahn
Scientist Walker
Robert Himber
Agent Hawthorne
Bo Hopkins
Agent Wilson
Robert Knepper
Church Soldier
Paul Schmidt
Sgt. Harker
Dean Hallo
Commanding Officer
Clive Rosengren
Lisa Pailey
Rose McGowan
Cpl. Guthrie
Edmund Wyson
Tunnel Boy
Lucas Elliot Eberl
Hilda
Judith Drake
Cowgirl
Yvette Nipar
Old Man at Bar (uncredited)
Lonny Chapman
Woman in Room 204 (uncredited)
Linnea Quigley
Jennifer Pailery, M.D.
Joanna Going
Deputy Stuart 'Stu' Wargle
Liev Schreiber
Deputy Steve Shanning
Nicky Katt
Gen. Leland Copperfield
Clifton Powell
Scientist Lockland
Rick Otto
Scientist Yamaguchi
Valerie Chow
Scientist Burke
Adam Nelson
Executive Producer
Harvey Weinstein
Producer
Joel Soisson
Special Effects Makeup Artist
Joel Harlow
Sound Designer
Harry Cohen
Stunts
Mickey Giacomazzi
Key Makeup Artist
Amanda Carroll
Bob Weinstein
Kathy Jarvis
Stunt Coordinator
Dan Bradley
Second Unit Director
Original Music Composer
David C. Williams
Associate Producer
Enrique Cerezo
Director
Joe Chappelle
Screenplay
Dean R. Koontz
Editor
Randy Bricker
Director of Photography
Richard Clabaugh
Additional Photography
Greg Littlewood
Lane Leavitt
Leah Rial
Casting
Don Phillips
Robert Pringle
Art Direction
Daniel Bradford
Set Decoration
Barbara Cole
Production Design
Deborah Raymond
Costume Design
Dana Litwack
Co-Executive Producer
Richard Potter
Dorian Vernacchio
Andrew Rona
Michael Leahy
Steven A. Lane
Ken Larson
Line Producer
Laurie Borg
Novel
Yoji Kurokami
Sound Effects Editor
Elisabeth Flaum
Vance Hartwell
Paul Berolzheimer
Sound
Richard Chaim
Foley Artist
Alan Kerr
Foley Editor
Jason Lezama
Trip Brock
Michael Kamper
Ricardo Broadus
ADR Editor
Paul Curtis
Rob Hinderstein
Sound Recordist
Allen Hurd
Dean Beville