 |  1st August 2006 DVD  1.78:1 | |
 | 8th April 2008 Blu-Ray 1.78:1 |
| 1st August 2006 DVD 1.78:1 | |
| 8th April 2008 Blu-Ray 1.78:1 |
 | Dr. Samantha Hill |
 | Brad Malloy |
 | Dr. Jordan Fisher |
 | Will Malloy |
 | Natalie Warner (as Garcelle Beauvais-Nilon) |
 | Dr. Miguel Garcia |
Laura Malloy | |
 | Stacy Warner, FEMA Director |
 | Alec Becker |
 | Sean Morris, Hollister's Aide |
 | First Lady Megan Hollister (as Melissa Anderson) |
 | First Daughter Amy Hollister |
 | Russ the Poker Player |
 | Dr. Earl Hill |
 | President Paul Hollister |
 | Ian |
 | Al Roberts |
Jim | |
 | Demo Team Leader |
Nando Garcia | |
Buried Survivor | |
Security Guard | |
Helicopter Reporter | |
Casino Patron | |
Casino Patron | |
 | Casino Patron |
 | Five Star General |