While struggling to keep himself and his translator alive after their helicopter crashes in Siberia, Bob remembers the process in which he went through to become a member of the Unit.
| Title | Natural Selection |
|---|---|
| Genres | Action & Adventure Drama |
| Release Date | 2006-11-14 |
| Episode Runtime | 00 Hours 42 Minutes |
| Season Number | 2 |
| Episode Number | 8 |
| Production Companies | 20th Century Fox Television, MiddKid Productions |
