| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Allan Arkush | Crew | Directing | Director | 1 |
 Davis Guggenheim | Crew | Directing | Director | 1 |
 Dean Devlin | Crew | Directing | Director, Writer, Creator | 1 |
 Donna Deitch | Crew | Directing | Director | 1 |
 Hans Tobeason | Crew | Writing | Writer | 2 |
 Ian Toynton | Crew | Directing | Director | 1 |
John Masius | Crew | Production | Producer | 13 |
 Randall Zisk | Crew | Directing | Director | 2 |
 Tim Van Patten | Crew | Directing | Director | 1 |
 Tony Bill | Crew | Directing | Director | 1 |
 Tucker Gates | Crew | Directing | Director | 1 |
Vivian Mayhew | Crew | Writing | Writer | 2 |
 Patrick R. Norris | Crew | Directing | Director | 1 |
 Adam Baldwin | Cast | Actor | Michael O'Ryan / Joe York | 1 |
Adam Biesk | Cast | Actor | David | 2 |
 Alonzo Bodden | Cast | Actor | Lt. Warren Reed | 2 |
 Amy Parrish | Cast | Actress | Betty York | 2 |
 Barbara Bain | Cast | Actress | Constance MacArthur | 1 |
 Bill Morey | Cast | Actor | Henry Milton | 1 |
 Brooks Almy | Cast | Actress | Sheila Logan | 1 |
 Bruce French | Cast | Actor | Father Traylor | 1 |
Burke Roberts | Cast | Actor | Tony | 1 |
Chad Cox | Cast | Actor | Clerk | 1 |
 Charles Hallahan | Cast | Actor | Sheriff | 1 |
 Charles Rahi Chun | Cast | Actor | Satcom Officer | 1 |
 Chris Ufland | Cast | Actor | Soldier | 1 |
 Christine Healy | Cast | Actress | Elaine Barker | 1 |
 Conrad Bachmann | Cast | Actor | Male Shadow | 1 |
 Courtney Peldon | Cast | Actress | Donna | 1 |
 Cynthia Mace | Cast | Actress | Congresswoman Wagstaff | 1 |
 Darwyn Carson | Cast | Actress | ER Nurse | 1 |
David Drew Gallagher | Cast | Actor | McNally | 2 |
David Kirk Chambers | Cast | NSA Officer | 1 | |
 David Sawyer | Cast | Actor | Guard | 1 |
 Dennis Burkley | Cast | Actor | Louie | 1 |
 Diana Bellamy | Cast | Actress | Mother | 1 |
 Dianne Turley Travis | Cast | Actress | Dr. Pauline Greenfield | 1 |
 Dominic Oliver | Cast | Actor | Benny | 1 |
 Don Brunner | Cast | Actor | Security Guard | 1 |
 Efrem Zimbalist Jr. | Cast | Actor | Wayland Scott | 1 |
 Ellen Bry | Cast | Actress | ER Doctor | 1 |
 Eve Brenner | Cast | Actress | Hospital Administrator | 1 |
 Frank Gerrish | Cast | Actor | Sheriff Newsom | 1 |
Fred Pinkard | Cast | Beauregard Wilde | 1 | |
 Fred Saldone | Cast | Actor | Cop | 1 |
 George Sullivan | Cast | Actor | NSA Superior | 1 |
 Glenn Taranto | Cast | Actor | FBI Agent | 1 |
 Grand L. Bush | Cast | Actor | Agent Douglas Wilcox | 13 |
 Granville Ames | Cast | Actor | Sgt. Roberts | 5 |
Greg Callahan | Cast | NSA General | 5 | |
Gregg Almquist | Cast | Congressman Hamilton | 1 | |
Jack Moore | Cast | Soldier #1 | 1 | |
 Jack Rader | Cast | Actor | Randall Craig | 1 |
 Jackie Debatin | Cast | Actress | Louise | 1 |
 Jan Hoag | Cast | Actress | Nurse | 1 |
Jason Sutliff | Cast | Computer Police (uncredited) | 1 | |
 Jessica Tuck | Cast | Actress | Lawson | 1 |
 Jill Remez | Cast | Actress | Dr. Patricia Ryan | 1 |
 John Carroll Lynch | Cast | Actor | Joe York | 1 |
 John Corbett | Cast | Actor | Adam MacArthur | 13 |
 John Kassir | Cast | Actor | 1 | |
 John Storey | Cast | Actor | Agent Craig Van Patten | 13 |
 Judy Kain | Cast | Actress | Nurse | 1 |
Kenneth Ryan | Cast | Actor | Senator | 1 |
 Larissa Laskin | Cast | Actress | Katherine | 1 |
 Leon Rippy | Cast | Actor | Agent Nicholas LaRu | 13 |
 Lola Glaudini | Cast | Actress | Constance MacArthur | 2 |
 Lori Heuring | Cast | Actress | Laura Scott | 1 |
 Lucinda Jenney | Cast | Actress | Nadine Walden | 2 |
Mark Newsom | Cast | Actor | Federal Prison Guard #2 (uncredited) | 1 |
 Mary Carver | Cast | Actress | Winifred Quick | 1 |
 Mary Mara | Cast | Actress | Magnolia Vale | 1 |
 Matt Clark | Cast | Actor | Monroe | 1 |
Matthew Bartilson | Cast | Glenn | 1 | |
 Michael Bacall | Cast | Actor | Carlo | 1 |
 Michael Harney | Cast | Actor | Warden Burke | 1 |
 Michael O'Hagan | Cast | Actor | Dr. Howard Stein | 1 |
 Mowava Pryor | Cast | Actress | NSA Agent | 1 |
 Nicolas Surovy | Cast | Actor | Ben Proctor | 1 |
 Paul Raci | Cast | Actor | Dark Grey Suit | 1 |
 Paul Terrell Clayton | Cast | Actor | Military Policeman | 1 |
 Rachel Winfree | Cast | Actress | Nurse | 1 |
 Richard Cox | Cast | Actor | Asst. Director Grushaw | 4 |
 Richard Hamilton | Cast | Actor | Captain | 1 |
 Richard Riehle | Cast | Actor | Principal Shinagel | 1 |
 Rob Elk | Cast | Actor | Father | 1 |
 Robert Knepper | Cast | Actor | Alex Burton | 1 |
 Rosemary Murphy | Cast | Actress | Tour Guide | 1 |
Rosie Malek-Yonan | Cast | Actress | Maria | 1 |
Sam Anderson | Cast | Actor | Army General | 1 |
Sam Gifaldi | Cast | Actor | Stephen Burton | 1 |
 Sandra Thigpen | Cast | Actress | Security Guard | 1 |
 Scott Shaw | Cast | Actor | James (uncredited) | 1 |
 Shaun Toub | Cast | Actor | 1 | |
Stephen Berra | Cast | Danny | 1 | |
 Steve Monroe | Cast | Actor | Steven | 1 |
 Steve Railsback | Cast | Actor | Colonel James Vise | 13 |
 Steven Anderson | Cast | Actor | Doctor | 1 |
 Tammy Lauren | Cast | Actress | Charlotte MacArthur | 2 |
 Teddy Lane Jr. | Cast | Actor | Cop | 1 |
 Thomas Newton | Cast | Young Ben Jordan | 1 | |
 Tony Amendola | Cast | Actor | Thomas | 1 |
 Travis Wester | Cast | Actor | Young Vise | 1 |
 Turhan Bey | Cast | Actor | Rusha | 1 |
 Vanessa Zima | Cast | Actress | Melissa | 1 |
 Walter Olkewicz | Cast | Actor | Ozzie Faulkner | 1 |
 Wendy Gazelle | Cast | Actress | Ruth Burton | 1 |
 Wendy Worthington | Cast | Actress | Female Shadow | 1 |
Eric Don | Cast | Actor | Jason | 1 |
 Miguel Angel Caballero | Cast | Actor | Michael (uncredited) | 1 |
Scott L. Treger | Cast | Actor | Hazmat Man #2 (uncredited) | 1 |
 Andre M. Johnson | Cast | Actor | Lt. Wayne (uncredited) | 2 |
Joe Rabl | Cast | FBI Agent | 2 | |
Judy Jean Berns | Cast | Actress | Member | 1 |
 Harry Shearer | Cast | Actor | Louis Faraday | 1 |
 Brian Vaughan | Cast | Actor | Tyler | 2 |
 Nichole Pelerine | Cast | Actress | Sarah | 1 |
 Laurie Lathem | Cast | Actress | Sally Wickan | 1 |
Jon Cowart | Cast | Kid at birthday party (uncredited) | 1 | |
Ben Hopkin | Cast | Actor | Soldier (uncredited) | 1 |
Marte Boyle Slout | Cast | Actress | Mother | 2 |
 Ryan Christopher Keys | Cast | Actor | Agent Ricks | 3 |
Sue Goodman | Cast | Actress | Neighbor | 1 |
Peter Hendrixson | Cast | Actor | Haz-Mat Member | 1 |
Chuck Sloan | Cast | Actor | Danny's Father | 1 |
 J. Scott Bronson | Cast | Actor | Captain Marshall | 1 |
Kristian Sorensen | Cast | Squad Leader (uncredited) | 1 | |
Michael Haywood Norris | Cast | Sheriff Lonnie Parks | 1 | |
Dan Rudert | Cast | Helicopter Pilot (uncredited) | 1 | |
Angela Miller | Cast | Young Elaine Barker | 1 | |
Richard Lyons | Cast | NSA Lieutenant | 1 | |
Pip Newson | Cast | Actress | NSA Technician | 1 |
| Person | Type | Job | Role(s) | Episodes |
