David James Elliott Lt., Lt. Cmdr. Harmon "Harm" Rabb, Jr. Actor Catherine Bell Maj., Lt. Col. Sarah "Mac" MacKenzie Actor John M. Jackson Actor Patrick Laborteaux Lt. j.g., Lt. Bud Roberts Actor Karri Turner Ensign, Lt. j.g. Harriet Sims Guest Star Susan Haskell Guest Star Dana Sparks Guest Star Trevor Goddard Guest Star Chuck Carrington Guest Star Harrison Page Guest Star Bo Clancey Guest Star Stacey Travis Guest Star Dennis Singletary Guest Star Jim Hanks Guest Star Mae Whitman Guest Star Cathy Worthington Guest Star Paul Collins Guest Star Donald P. Bellisario Executive Producer Charles Floyd Johnson Executive Producer Stephen Zito Executive Producer Alan J. Levi Director R. Scott Gemmill Writer