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 David Andrews Maj. Gen. Gordon "Biff" Cresswell Actor Dean Stockwell Guest Star Andrew Robinson Guest Star Clyde Kusatsu Guest Star Michael Beck Guest Star Dr. Joyce Brothers Guest Star Beth Grant Guest Star Adam Beach Guest Star Hallee Hirsh Guest Star J. Patrick McCormack Guest Star Richard Gant Guest Star Ray Baker Guest Star Pamela Reed Guest Star Mark Siversten Guest Star Michael Horse Guest Star Patrick Macmanus Guest Star James Martin Kelly Guest Star Ed Lauter Guest Star Michael Linstroth Guest Star James Mathers Guest Star Zeus Benitez Guest Star Kevin O'Keefe Guest Star Donald P. Bellisario Executive Producer Charles Floyd Johnson Executive Producer Stephen Zito Executive Producer Mark Horowitz Executive Producer Terrence O'Hara Director Darcy Meyers Writer