David James Elliott Lt., Lt. Cmdr. Harmon "Harm" Rabb, Jr. Actor Catherine Bell Maj., Lt. Col. Sarah "Mac" MacKenzie Actor Patrick Laborteaux Lt. j.g., Lt. Bud Roberts Actor John M. Jackson Actor Trevor Goddard Guest Star Randy Vasquez Guest Star Karri Turner Ensign, Lt. j.g. Harriet Sims Guest Star Chuck Carrington Guest Star Cindy Ambuehl Guest Star Nanci Chambers Guest Star Mae Whitman Guest Star Sibel Galindez Guest Star Gary Graham Guest Star Scott Haven Guest Star Rick Hall Guest Star Lance Guest Guest Star Frayne Rosanoff Guest Star Edita Brychta Guest Star Bryan Anthony Guest Star Benjamin Brown Guest Star Brian Palermo Guest Star Kristen Trucksess Guest Star Luciano Miele Guest Star David Quane Guest Star Donald P. Bellisario Executive Producer Charles Floyd Johnson Executive Producer Stephen Zito Executive Producer Scott Brazil Director Dana Coen Writer