Characters played by Casper Van Dien
Nathan Sims
Characters played by Michael Beach
Simon Caprisi
Characters played by Sarah Lieving
Mona Sims
Characters played by Bryan Head
Johnny Sims
Characters played by Keith Meriweather
Captain Wright
Characters played by Chad Brummett
Gage
Characters played by James Lawrence Sicard
Specialist Tudor (as James Sicard)
Characters played by Dale O'Malley
Tech Oxenberg
Characters played by Hayley Derryberry
Tech Lewis
Characters played by Alex Knight
Sergeant Gentile
Characters played by Jeremiah Wood
Science Tech #1 (as Jeremiah Z. Wood)
Characters played by Lawrence Kruckeberg
Science Tech #2 (as Lawrence 'Law' Kruckeberg)
Characters played by Stephen Turselli
Science Tech #3
Characters played by Gerard Pitpitan
Science Tech #4
Characters played by Kim Trujillo
Reporter