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 Karri Turner Ensign, Lt. j.g. Harriet Sims Actor Scott Lawrence Cmdr. Sturgis Turner Actor Zoe McLellan Petty Officer Jennifer Coates Actor Dean Stockwell Guest Star Maria del Mar Guest Star William Sadler Guest Star Ali Hillis Guest Star Christopher Neiman Guest Star James Brandon Guest Star Wendy Schenker Guest Star Dendrie Taylor Guest Star Kacie Borrowman Guest Star Carol Potter Guest Star William Allen Young Guest Star Ray Wise Guest Star Richard McGonagle Guest Star Dar Dixon Guest Star Charles Floyd Johnson Guest Star, Executive Producer Bradley Snedeker Guest Star Donald P. Bellisario Executive Producer Stephen Zito Executive Producer Mark Horowitz Executive Producer Jeannot Szwarc Director Larry Moskowitz Writer