- David Bourlawritten by and
- Michael Norellwritten by
- William Devane(as William DeVane)
- Roger Cross(as Roger R. Cross)
- Ken Camroux-Taylor(as Ken Camroux)
- Craig Bruhnanski(as Craig Brunanski)
- Jason Gray-Stanford(as Jason Gray Stanford)
Rest of cast listed alphabetically
- Barry W. Levy(uncredited)
- Marty Lindsey(uncredited)
- Cameron K. Smith(uncredited)
- Manoj Sood(uncredited)
- Simon Abbottsupervising producer
- Paul Colichmanproducer
- Mark R. Harrisproducer
- Stephen P. Jarchowexecutive producer
- Thomas Carl McGuinnessassociate producer
- Rosanne Millikenproducer
- Jeffrey Schenckco-producer
- James Shavickexecutive producer
- Rod Parkhurstdirector of photography
- Stephen R. Myerseditor (as Stephen Myers)
- Carmen Krausharart director (as Rae Carmen Kraushar)
- Joanne Kinchellamakeup artist
- Dean Ryanehair stylist
- William Lyon MacKenzieassistant makeup artist (uncredited)
- J. Henry Andorproduction manager
- Rosanne Millikenexecutive in charge of production
- Scott J. Ateahsecond unit director (as Scott Ateah)
- Michael Magnussonsecond assistant director (as Mike Magnusson)
- Lidia Stantefirst assistant director (as Lydia Stante)
- Scott Clatneykey scenic artist
- Michelle Hendriksenassistant art director
- Mervyn Hopeconstruction coordinator (as Merv Hope)
- Dean Kellyhead carpenter
- Diane Nachlikset dec buyer
- Cathy Robertsonart design advisor
- Paul Wagnerassistant property master
- Jimmy O. Howardproperty master (uncredited)
- Michele Schwemmerproperty buyer (uncredited)
- Nancy Lee Bleischadr editor (as Nancy Bleisch)
- Sarah Bradyadr supervisor
- John Brasherre-recording mixer (as John Brashner)
- Marty Hutchersonre-recording mixer
- Adriane Marfiaksound effects editor
- Randy Mortonboom operator
- Bruce Murphydialogue editor
- Monique Reymondfoley artist
- Roger Stafeckissound mixer
- Richard Steelesound effects editor (as Rick Steele)
- Kirk Douglasspecial effects assistant
- Jamie Claytechnical director (uncredited)
- Kevin O'Loneproduction manager (uncredited)
- Pat Corbittvisual effects: I.C.B.M. & Hubble telescope sequences
- Dan Dipierrovisual effects: I.C.B.M. & Hubble telescope sequences
- Shawn Espositovisual effects: moon & asteroid shots
- Martin Fostercomet & asteroid collision / technical director (uncredited)
- Gina Galvanvisual effects supervisor: Take One Incorporated
- Jesse Silvermatte painter
- Jamie Clayanimator (uncredited)
- Peter Clayanimator (uncredited) / compositor (uncredited)
- Jonah Loopanimator (uncredited) / compositor (uncredited)
- Scott J. Ateahstunt coordinator (as Scott Ateah)
- Rob Wiltonstunt driver (uncredited)
- Mike Arnasongenerator operator
- Robert Aschmanndirector of photography: second unit
- Murray Battistonkey grip (as Murray Battison)
- Theo Eglsederfirst assistant camera (as Theo Ediseder)
- Robert Ennisadditional photography (as Bob Innis)
- Kenneth Hewlettadditional photography (as Ken Hewlitt)
- Kharen Hillstills
- Dale H. Jahrausadditional photography (as R. Jarhaus)
- Spiro Karfakiscamera assistant
- Dan Mannixadditional photography / steadicam operator
- Judy Blairextras casting
- Laurie McGrathcasting: Canada
- Maureen Webbcasting: Canada
- Jordan Acombafirst assistant editor
- James Cowanon-line editor
- Larry Engelmannfinal colorist
- Brian Wawzonekon-line editor (as Brian J. Wawzonek)
- Grace Yuensecond assistant editor
- Andrea Claremontlocation manager
- Billy McRobbieassistant location manager
- Ann Marie Clarkscript supervisor (as Anne Marie Clark)
- Nancy Welshscript supervisor: second unit / script editor (uncredited)
- Tyler Browndriver: cast
- William Parktransportation captain
- Glen Tremblaytransportation coordinator
- Allison Andradeexecutive assistant
- Stephen Cholakisstudio operations manager
- Shelagh Cousinsassistant accountant
- Brad E. Dankslegal counsel
- Tracey Danksexecutive assistant
- Michael Donnerpost-production accountant
- Rob Fournierarmorer / armourer
- Tracey Gardhousewrangler (as T. Gardhouse)
- Boris Ivanovproduction assistant
- Bill Kitchenvideo synchronization
- Paul Goldsmithspecial thanks: Director of the National Astronomy D Ionosphere Center
- Ian D. Newbyspecial thanks: International Movie Services
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