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 Randy Vasquez Guest Star Nanci Chambers Guest Star Trevor Goddard Guest Star Ray Baker Guest Star Andrea Parker Guest Star Rif Hutton Guest Star Jennifer Savidge Guest Star John D'Aquino Guest Star Dwain A. Perry Guest Star Jolene Blalock Guest Star Scott Mosenson Guest Star Matt Sigloch Guest Star Donald P. Bellisario Executive Producer Charles Floyd Johnson Executive Producer Stephen Zito Executive Producer James Whitmore Jr. Director Dana Coen Writer