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 Scott Lawrence Cmdr. Sturgis Turner Guest Star Karri Turner Ensign, Lt. j.g. Harriet Sims Guest Star Chuck Carrington Guest Star Nanci Chambers Guest Star Steven Culp Guest Star Michael Bellisario Guest Star Isabella Hofmann Guest Star Dean Stockwell Guest Star W. K. Stratton Guest Star Zoe McLellan Petty Officer Jennifer Coates Guest Star Jeff MacKay Guest Star Tamlyn Tomita Guest Star Craig Kirkwood Guest Star Ali Afshar Guest Star Laura Putney Guest Star Matthew Josten Guest Star Donald P. Bellisario Executive Producer, Director, Writer Charles Floyd Johnson Executive Producer Stephen Zito Executive Producer Mark Horowitz Executive Producer Bradford May Director Kenneth Johnson Director Terrence O'Hara Director Scott Brazil Director Dennis Smith Director Michael Schultz Director Dana Coen Writer Don McGill Writer Philip DeGuere Jr. Writer Darcy Meyers Writer Paul J. Levine Writer John Chambers Writer Steven Smith Writer Lyn Greene Writer