Directed by
| Christian I. Nyby II | ||
Writing Credits
| Robert A. Cinader | ... | (created by) (as R.A. Cinader) |
| William Froug | ||
Cast (in credits order)
| Jack Hogan | ... | Chief Ranger Jack Moore | |
 |
James G. Richardson | ... | Ranger Tim Cassidy |
| Ernest Thompson | ... | Ranger Matt Harper | |
|
|
Susan Foster | ... | Ranger Julie Beck |
| Michael Warren | ... | Ranger P.J. Lewis | |
| Rest of cast listed alphabetically: | |||
| Jed Allan | |||
| Scott Brady | ... | Thomas Walsh | |
| Gretchen Corbett | ... | Theodora Burke | |
| Michael Richardson | ... | Eddie Crane | |
Produced by
| Jack Webb | ... | executive producer |
Production Management
| Charles Clement | ... | post production operations head (uncredited) |
Music Department
| Denny Brooks | ... | singer: theme music |
| John Denver | ... | lyricist: theme music |
| Lee Holdridge | ... | composer: theme music |
Additional Crew
| Ron Veto | ... | underwater diver |