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

Adm. A.J. Chegwidden

John M. Jackson

Ensign/Lt. j.g. Harriet Sims

Karri Turner

Senator Edward Sheffield

Dean Stockwell

Guest Star

Richard McGonagle

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

Chuck Carrington

Cmdr. Sturgis Turner

Scott Lawrence

Victor 'Gunny' Galindez

Randy Vasquez

Petty Officer Jennifer Coates

Zoe McLellan

Guest Star

Jack Conley

Clayton Webb

Steven Culp

Guest Star

Ossie Davis

Guest Star

Wade Williams

Mattie Grace Johnson

Hallee Hirsh

Loren Singer / Meghan O'Hara

Nanci Chambers

Guest Star

Adam Baldwin

Cmdr. Amy Helfman

Jennifer Savidge

Guest Star

Amy Stewart

Guest Star

Bill Cobbs

Meredith Cavanaugh / Maryann Cavendish

Isabella Hofmann

Guest Star

David Labiosa

Mic Brumby

Trevor Goddard

Guest Star

Bernard White

Stiles Morris

Harrison Page

Guest Star

Richard Cox

Guest Star

Susan Walters

Guest Star

David Batiste

Guest Star

Barry Zito

Guest Star

Jerry Coyle

Guest Star

Mike Siegel

Guest Star

Will Womble

Guest Star

Elijah Alexander

Guest Star

Vicellous Shannon

Guest Star

Dan Lauria

Guest Star

Douglas Spain

Alison Krennick

Andrea Thompson

Guest Star

Jeff McCracken

Guest Star

Aaron Smolinski

Big Bud Roberts

Jeff MacKay

Guest Star

Joan McMurtrey

Carolyn Imes

Dana Sparks

Guest Star

Tamara Mello

Guest Star

Ramy Zada

Guest Star

Ariyan Johnson

Guest Star

Michael Bofshever

Edward Hardy

Jack Stehlin

Guest Star

Alessandra Toreson

Guest Star

Joseph Cannon

Guest Star

John Walcutt

Guest Star

John Wesley Shipp

Guest Star

Mary Page Keller

Guest Star

Jameson Parker

Guest Star

Chelcie Ross

Guest Star

Dan Martin

Guest Star

K Callan

Capt. Molina

Del Zamora

Guest Star

Brian T. Skala

Guest Star

Erica Gimpel

Clifford Blakely

John DeMita

Guest Star

Jacqueline Hahn

Guest Star

Laura Putney

Guest Star

Lyman Ward

Guest Star

Michaela Conlon

Guest Star

William Russ

Guest Star

Alex Carter

Guest Star

Scott Paulin

Guest Star

Michael Des Barres

Guest Star

Tony Plana

Guest Star

Steven Flynn

Guest Star

David Gianopoulos

Guest Star

John Dennis Johnston

Guest Star

Michael Cudlitz

Guest Star

Chris Ellis

Guest Star

Roger Cross

Mikey Roberts / Antonio

Michael Bellisario

Guest Star

Christopher Maher

Maria Elena

Alana de la Garza

Guest Star

Graham Shiels

Guest Star

Steve Heinze

Guest Star

Mark Espinoza

Guest Star

Gerard O'Donnell

Guest Star

Sterling K. Brown

Guest Star

Andrew A. Rolfes

Guest Star

Sean O'Bryan

Guest Star

John Hemphill

Guest Star

Ben Murphy

Meg Austin

Tracey Needham

Guest Star

Scott Atkinson

Guest Star

Khary Payton

Guest Star

Brent Sexton

Guest Star

Jeffrey Pierce

Guest Star

Patrick Flueger

Guest Star

Michelle Azar

Guest Star

John Sloan

Guest Star

Christopher Goodman

Guest Star

Lamont Thompson

Guest Star

Adam Grimes

Guest Star

Anil Kumar