 | Patrick Muldoon als Mike Connors |
 | Theresa Russell als Dr. Nancy Burnham |
 | Curtis Armstrong als Keach |
 | Tamara Davies als Sid Bream |
 | Lydie Denier als Diane Cafferty |
 | John Beck als Simpkins |
 | Joe Avalon als Sgt. Tulley |
 | Daniel Quinn als Alan Stanton |
 | James Cromwell als MP 1 |
 | Joe Sabatino als MP 2 |
| Billy Keane als Steve Elkins |
 | Rod McCary als Dr. Shoup |
 | Lorissa McComas als Chelsea |
| William Langlois als General Cartwright |
 | Andy Milder als Chambers (Head of NASA) |
 | Rene Rivera als Gonzales |
 | Tim Thomerson als Sheriff Morgan |
| Eric James Virgets als Deputy Ferguson |
| Steve Purnick als Mr. Norton |
 | Adam Lieberman als Crewman Terrance |
| Dwayne Shattuck als Crewman Miller |
 | Redmond Gleeson als Local Man |
 | GiGi Erneta als Girl by Pool (uncredited) |
| Jim Wynorski | Director |
| Lisa M. Hansen | Producer |
| Curtis Joseph | Writer |
| Paul Hertzberg | Producer |
| J.P. Pettinato | Executive Producer |
| Neal Acree | Music |
| Mario D'Ayala | Director of Photography |
| Craig Kitson | Editor |
| Robert Hummel | Production Design |
| Chuck Dutrow | Art Direction |
| Donna Willinsky | Set Decoration |
| Simone Almekias-Siegl | Makeup Department Head |
| Michelle Werner | Makeup Artist |
| David Mason | Writer |
| Neil Elman | Co-Producer |
| Steven Paul | Executive Producer |
| Dwayne Shattuck | Co-Producer |
| Datty Ruth | Executive Producer |
| Linda Berger | Casting |
| Tricia Gray | Costume Designer |
| Gail De Krassell | Costume Designer |
| J.P. Pettinato | Unit Production Manager |
| Vicki L. Sawyer | Production Supervisor |
| Mark Demarais | Second Assistant Director |
| Dana MacDuff | First Assistant Director |
| Casey Mako | Second Second Assistant Director |
| Samuel Libraty | Sound Re-Recording Mixer |
| Frank L. Pope | Pyrotechnician |
| John Allardice | Visual Effects Supervisor |
| Albert Lannutti | Special Effects |
| Warren A. Stevens | Stunt Coordinator |
| GiGi Erneta | Stunt Double |
| Mark Riccardi | Stunt Double |
| Michael J. Sarna | Stunts |
| Bret Davidson | Stunts |
| Bret Davidson | Second Unit Director |
| Alisa Christensen | Stunts |
| Chris Carnel | Stunts |
| John Cade | Stunts |
| Al Goto | Stunts |
| Gary Paul | Stunts |
| Peewee Piemonte | Stunts |
| Tom Poster | Stunt Double |
| William Langlois | Location Manager |
| Mike Tristano | Armorer |
| Lauren McAuliffe | Script Supervisor |
