as Gilliam

as Chief Wells

as Dr. Grant Harrison

as President McKenna

as Phil Fryman

as Mac Odell

as Lt. Hugo

as Sergeant Sam Taliaferro

as Dr. Case Montgomery

as Joe

as Senator Smith

as Robert Creighton

as Robert F. Kennedy

as Scotty MacGregor

as Adam Nichols

as Admiral Lynch

as Preacher (voice)

as Chad Webster

as Mike Caldwell

as Dick Thompson

as Ned Holcomb

as Steve

as Nick Cowan

as Under Secretary William Macomber

as Loren Valentine (voice)

as Roman

as John Meyers

as Trucker

as Dr. Altman

as Silas Green

as Tom Claire

as Pap

as Officer Rob Arnold