Ben Affleck character Sheriff Bryce Hammond
Peter O'Toole character Dr. Timothy Flyte
Rose McGowan character Lisa Pailey
Joanna Going character Jennifer Pailery, M.D.
Liev Schreiber character Deputy Stuart 'Stu' Wargle
Nicky Katt character Deputy Steve Shanning
Clifton Powell character Gen. Leland Copperfield
Rick Otto character Scientist Lockland
Valerie Chow character Scientist Yamaguchi
Adam Nelson character Scientist Burke
John Hammil character Scientist Talbot
John Scott Clough character Scientist Shane
Michael DeLorenzo character Soldier Velazquez
William Hahn character Scientist Borman
Robert Himber character Scientist Walker
Bo Hopkins character Agent Hawthorne
Robert Knepper character Agent Wilson
Paul Schmidt character Church Soldier
Dean Hallo character Sgt. Harker
Clive Rosengren character Commanding Officer
Edmund Wyson character Cpl. Guthrie
Lucas Elliot Eberl character Tunnel Boy
Linnea Quigley character Woman in Room 204
Judith Drake character Hilda
Yvette Nipar character Cowgirl
