George Maharis
Lee Barrett
Richard Basehart
Dr. Gregor Hoffman
Dana Andrews
Gen. Williams
John Larkin
Dr. Leonard Michaelson
Richard Bull
Eric Cavanaugh
Frank Sutton
Henchman Donald
John Anderson
Agent Reagan
John Clarke
Guard Lt. Raskin
Hari Rhodes
Guard Lt. Johnson
Harry Lauter
Fake SDI Agent
Russ Bender
Desk Guard Mason
Harold Gould
Dr. Ostrer (uncredited)
William Bryant
Lead Agent "X-Ray", drives car
James Doohan
Second Agent "X-Ray", scratches hand
Michael Barrier
Helicopter Pilot Henchman
Tol Avery
Detective Captain at Baseball Stadium
