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 Sean Murray Guest Star Richard Narita Guest Star Yuji Okumoto Guest Star Mako Guest Star Muse Watson Guest Star Scott Haven Guest Star Marion Yue Guest Star Jennifer Aquino Guest Star Steven Roy Guest Star Sam Hiona Guest Star Cynthia Ruffin Guest Star Chuck Carrington Guest Star Donald P. Bellisario Executive Producer Charles Floyd Johnson Executive Producer Stephen Zito Executive Producer Tony Wharmby Director Dana Coen Writer