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 Actor Chuck Carrington Actor Scott Lawrence Cmdr. Sturgis Turner Actor Nanci Chambers Actor Randy Vasquez Guest Star Steven Culp Guest Star Bernard White Guest Star Jack Stehlin Guest Star Del Zamora Guest Star Alana De La Garza Guest Star Isait De La Fuente Guest Star Yeniffer Gehrens Guest Star Edgar M. Garcia Guest Star Robert Zepeda Guest Star Donald P. Bellisario Executive Producer Charles Floyd Johnson Executive Producer Stephen Zito Executive Producer, Writer Mark Horowitz Executive Producer Bradford May Director