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 Steven Culp Guest Star Karri Turner Ensign, Lt. j.g. Harriet Sims Guest Star Nanci Chambers Guest Star Susan V. Hansen Guest Star Kiersten Warren Guest Star Christopher Neame Guest Star Michael Des Barres Guest Star David Rosen Guest Star Ricco Ross Guest Star J. Downing Guest Star Hoke Howell Guest Star Garth Wilton Guest Star Tracy Effinger Guest Star Monique Edwards Guest Star Nancy Sullivan Guest Star Donald P. Bellisario Executive Producer Joe Napolitano Director Stephen Zito Writer