John Lithgow
John Mathewson
Acting
Christopher Collet
Paul Stephens
Acting
Cynthia Nixon
Jenny Anderman
Acting
Jill Eikenberry
Elizabeth Stephens
Acting
John Mahoney
Lt. Col. Conroy
Acting
Richard Jenkins
Radiation Controls Officer
Acting
Sully Boyar
Night Guard
Acting
Timothy Carhart
Relief Guard
Acting
Gregg Edelman
Science Teacher
Acting
JD Cullum
Eccles (as John David Cullum)
Acting
Abraham Unger
Roland (as Abe Unger)
Acting
Robert Sean Leonard
Max
Acting
Fred Melamed
Howard
Acting
Ned Eisenberg
C-4 Guy (uncredited)
Acting
Richard Council
Government Aide
Acting
Robert Schenkkan
Government Aide
Acting
Steve Blum
Laser Efficiency Kid (as Richard Cardona)
Acting
Sarah Burke
Jenny's Parent
Acting
Warren Manzi
Day Attendant
Acting
Paul Austin
General
Acting
Adrian Sparks
Scientist
Acting
Curt Dempster
Scientist
Acting
Bran Ferren
Lab Assistant
Visual Effects
David Quinn
Tennis
Acting
Geoffrey Nauffts
Craig
Acting
Katherine Hiler
Emma
Acting
Trey Cummins
Terry
Acting
Steve Borton
Local FBI
Acting
Harlan Cary Poe
Local FBI
Acting
Ned Schmidtke
Jenny's Parent
Acting
Allen DeCheser
Jenny's Brother
Acting
Artie DeCheser
Jenny's Brother
Acting
Fred G. Smith
Conroy's Lieutenant
Acting
Manny Jacobs
Moore
Acting
Charles Fields
Price (as Charlie Fields)
Acting
Eric Hsiao
Saito
Acting
Heather Rose Dominic
Flirting Kid
Acting
Bruce Smolanoff
Flirting Kid
Acting
John Doumanian
Cabbie
Acting
Tom Tarpey
Injection Doctor
Acting
Roger Caine
FBI (as Alec Massey)
Acting
Edward D. Murphy
FBI
Acting
Joan Harris
Barbara Collins - TV Reporter
Acting
Ken Chapin
Command
Acting
Peter McRobbie
Electronics
Acting
Warren Keith
Computer
Acting
Bruce Jarchow
Interrogator
Acting
Stephen Markle
Interrogator
Acting
Al Cerullo
Helicopter Pilot
Crew
Michael Telesco
Day Security Receptionist
Acting
Richard Caselnova
SWAT
Acting
Frank Ferrara Sr.
SWAT
Crew
Jimmie Ray Weeks
SWAT
Acting
Dan Butler
SWAT
Acting
Steve Zettler
SWAT
Acting
Debbie Gibson
Background (uncredited)
Acting