Lt./Lt. Cmdr. Harmon "Harm" Rabb, Jr.

David James Elliott

Maj./Lt. Col. Sarah "Mac" MacKenzie

Catherine Bell

Lt. j.g./Lt. Bud Roberts

Patrick Labyorteaux

Capt. Tobias Ingles / Gary Hochausen

Gary Graham

Admiral Albert Jethro 'A.J.' Chegwidden

John M. Jackson

Guest Star

Kevin Conway

Guest Star

Sarah Silverman

Harriet Sims / Phyllis Diller / Jonie James

Karri Turner

Guest Star

Ben Lemon

Guest Star

Montel B. Williams

Dalton Lowne

Larry Poindexter

Guest Star

Marjorie Monaghan

Bobbi Latham

Anne-Marie Johnson

Guest Star

Elizabeth Mitchell

Guest Star

Ben Murphy

Clayton Webb

Steven Culp

Guest Star

David Purdham

Det. Frank Coster

Michael David Lally

Guest Star

Will Rothhaar

Guest Star

Norman Parker

Guest Star

David Koplan

Guest Star

Joe Spano

Teresa Coulter / Lt. Cmdr. Teresa Coulter

Trisha Yearwood

Guest Star

Gregory Itzin

Ned Bannon / Capt. French

Glenn Morshower

Mark 'Falcon' Sokol / Submarine Skipper

Rex Linn

Guest Star

Christina Pickles

Guest Star

Kate Hodge

Guest Star

Lou Myers

Guest Star

James MacDonald

Guest Star

Ian Ogilvy

Tom Hart / Captain Trecher / Jeb Stuart Wilkins

Guy Garner

Carolyn Imes

Dana Sparks

Guest Star

Blake Lindsley

Guest Star

Betty Carvalho

Jason Tiner / Petty Officer First Class Jason Tiner / Archie Bond

Chuck Carrington

Guest Star

Mark Kiely

Guest Star

Michael Gregory

Guest Star

Joey Spillers

Guest Star

Jackie Debatin

Guest Star

Vladimir Skomarovsky

Guest Star

Giuliana Santini

Guest Star

Rex Smith

Guest Star

Kent McCord

Clark Palmer

Peter Murnik

Guest Star

Jon Cypher

Guest Star

John Ashton

Guest Star

Steve Eastin

Guest Star

Erik King

Guest Star

Ernest Borgnine

Sturgis Turner

Scott Lawrence

Guest Star

Allen Cutler

Guest Star

Stephen Liska

Guest Star

Debbie McLeod

Johnny Blackhorse

Frank Sotonoma Salsedo

Guest Star

Scott Kuhagen

Guest Star

Richard Partnow

Guest Star

Eric Paskel

Guest Star

Michael Saad

Guest Star

Lance Hunter Voorhees

Guest Star

Marty Rackham

Guest Star

Randolph Mantooth

Guest Star

W. Morgan Sheppard

Guest Star

Katherine Cannon

Guest Star

Aki Aleong

Guest Star

John Prosky

Mic Brumby

Trevor Goddard

Guest Star

Forry Smith

Guest Star

James Victor

Guest Star

Shashawnee Hall

Guest Star

John Bennett Perry

Guest Star

Larry Manetti

Guest Star

Gary Collins

Guest Star

Kirk Trutner

Guest Star

Laurel Moglen

Guest Star

Gregory Norman Cruz

Guest Star

Tico Wells

Guest Star

Pamela Tyson

Guest Star

Eric Winzenried

Alison Krennick

Andrea Thompson

Guest Star

Sam Hennings

Guest Star

Dick Bakalyan

Guest Star

Tom Urich

Guest Star

Charles Homet

Guest Star

Jon Menick

Guest Star

Mike Jolly

Big Bud Roberts

Jeff MacKay

Guest Star

Kathleen Lloyd

Guest Star

Tracey Needham

Guest Star

Jerry Hardin

Guest Star

Don Yesso

Guest Star

Allan Kolman

Guest Star

Nick Corri

Guest Star

Grace Renn

Guest Star

Victor Bevine

Guest Star

Dathan Hooper

Guest Star

Dwight James

Guest Star

Mark Anthony Nutter

Guest Star

James McBride

Victor 'Gunny' Galindez

Randy Vasquez

Guest Star

Royce D. Applegate

Guest Star

Bill Bolender

Guest Star

Bobby Hosea

Guest Star

Steve Reevis

Guest Star

Daphne Ashbrook

Guest Star

Sandy Edgerton

Guest Star

Anne Gee Byrd

Chief of Chaplains / Chaplain

Scott Haven

Guest Star

Brook Susan Parker

Guest Star

Nick Meaney

Guest Star

Matthew Gottlieb

Guest Star

Jamie Kaler

Guest Star

Tom Everett

Guest Star

Thom Barry

Guest Star

Ilia Volokh

Guest Star

Lanei Chapman

Guest Star

Robert D'Avanzo

Guest Star

Richard Haje

Guest Star

Marcy Kaplan

Guest Star

Marilyn Tokuda

Guest Star

Victor Touzie

SecNav Alexander Nelson / Alexander Nelson / John C. Spencer

Paul Collins

Guest Star

Larissa Laskin

Stiles Morris

Harrison Page

Guest Star

Richard Speight Jr.

Loren Singer / Meghan O'Hara

Nanci Chambers

Guest Star

Kevin Fry

Guest Star

Gregory White

Guest Star

Cosimo Canale

Guest Star

Mitch Gibney

Guest Star

Nathan LeGrand

Guest Star

Elizabeth Liebel

Guest Star

Jimmy Tainaka

Guest Star

Corey Joshua Taylor

Guest Star

Eric Whitmore

Guest Star

Nick Tate

Guest Star

Gary Grubbs

Guest Star

Pierrino Mascarino

Guest Star

Linden Chiles

Guest Star

Darin Cooper

Guest Star

Mark Carlton

Guest Star

Monique Mannen

Guest Star

Jack Yates

Guest Star

Mercedes Colon

Guest Star

P.J. O'Connor

Guest Star

Joshua Estrada

Guest Star

Sean Michael Magee

Guest Star

James G. Martin Jr.

Guest Star

Jim Antonio

Guest Star

Vaughn Armstrong

Guest Star

Aleksandra Kaniak

Guest Star

Diane Delano

Guest Star

Joe Garcia

Guest Star

James F. Kelly

Guest Star

Garrison Hershberger

Guest Star

Iqbal Theba

Guest Star

Adrian Sparks

Guest Star

Will Potter

Guest Star

Jeffrey Corbett

Guest Star

Brian Groh

Guest Star

Harry Hutchinson

Guest Star

Dwight Burgess

Guest Star

Kimberly Scott

Guest Star

Tim Owens

Guest Star

Anthony Diaz Perez

Guest Star

Eric Rutherford

Guest Star

Ron Casal Sanchez

Guest Star

Chris Whalley

Guest Star

Catherine Nagan

Guest Star

Donald P. Bellisario

Guest Star

Amani Gethers

Guest Star

Nynno Ahli

Narrator - Opening Titles

Don LaFontaine

Guest Star

Levani

Guest Star

Craig Barnett

Guest Star

Steve Arroyo

Guest Star

Andy Fox

Guest Star

Robert Gibson

Guest Star

David A Saunders

Guest Star

Alan Stepp

Guest Star

Michael Storm

Guest Star

Florence Sundstrom

Rene Peterson

Cindy Ambuehl

Guest Star

Judie Aronson

Guest Star

Dennis Burkley

Guest Star

David Downing

Alan Mattoni / Lt. Cmdr. Alan Mattoni

Rif Hutton

Guest Star

Don Dowe

Guest Star

Shannon O'Hurley

Guest Star

Sharon Madden

Guest Star

David Ackert

Guest Star

Mark Costello

Guest Star

Troy Harris

Guest Star

Charles Hoyes

Guest Star

Allan Royal

Guest Star

Lisa Waltz

Guest Star

Jackson Walker

Guest Star

Stephen Macht

Guest Star

Lisa Robins

Guest Star

Gary Miller

Guest Star

Aria Noelle Curzon

Mikey Roberts / Antonio

Michael Bellisario

Cahill / First Sergeant Creed / Seal Instructor

Matt Sigloch

Guest Star

Yoshio Be

Guest Star

Kris Edlund

Guest Star

Cynthia Ruffin

Guest Star

Mac Weston

Guest Star

Donald Willis

Guest Star

Fulvio Cecere

Guest Star

Bart Johnson

Guest Star

Carol Barbee

Guest Star

David Doty

Guest Star

Camryn Grimes

Guest Star

Greg Ashburn

Guest Star

Netsuko Niwa Fujii

Guest Star

Lindsay Kough

Guest Star

H. Cannon Lopez

Guest Star

Johnson West

Guest Star

Scott MacDonald

Guest Star

Dennis Bowen

Mattie Grace Johnson

Hallee Hirsh

Guest Star

DeLaune Michel

Guest Star

Zuhair Haddad

Guest Star

LaRita Shelby-Mullen

Guest Star

Gary Simpson

Guest Star

Jan Eddy

Guest Star

Paul Keeley

Guest Star

Dianna Morgan

Guest Star

Thomas Tofel

Senator Edward Sheffield

Dean Stockwell

Guest Star

Gino Conforti

Guest Star

Ann Walker

Guest Star

Diana Morgan

Guest Star

Reese Selley

Stuart Dunston

John D'Aquino

Guest Star

Antonia DeNardo

Guest Star

Sarah J. Hale

Guest Star

Eric Steinberg

Admiral Thomas Boone / Thomas Boone

Terry O'Quinn

Ted Lindsey / Cmdr. Ted Lindsey / Captain Stewart

W.K. Stratton

Clifford Blakely

John DeMita

Sidney Walden

Cynthia Sikes

Jordan Parker

Susan Haskell

Chloe Madison

Mae Whitman

Lt. Gregory Vukovic

Chris Beetem

Danny Walden / Terry Guitry

Sean Murray

Lt. Alfred Aldridge

A.J. Tannen

Lt. Elizabeth 'Skates' Hawkes / Elizabeth 'Skates' Hawkes

Sibel Ergener

Cmdr. Amy Helfman

Jennifer Savidge

Kate Pike / Cmdr. Caitlin 'Kate' Pike

Andrea Parker

Meredith Cavanaugh / Maryann Cavendish

Isabella Hofmann

Admiral Drake

John Roselius