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 Karri Turner Ensign, Lt. j.g. Harriet Sims Guest Star Trevor Goddard Guest Star Chuck Carrington Guest Star Randy Vasquez Guest Star Steven Culp Guest Star Cindy Ambuehl Guest Star Harrison Page Guest Star Christina Pickles Guest Star Laurence Lau Guest Star Scott Williamson Guest Star Aleksandr Kuznetsov Guest Star Daniel Sapecky Guest Star Paul Perri Guest Star Elyse Donalson Guest Star Nicole Avant Guest Star Judi Beecher Guest Star Henry LeBlanc Guest Star Donald P. Bellisario Executive Producer Charles Floyd Johnson Executive Producer Stephen Zito Executive Producer Bradford May Director Paul Levine Writer