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 Randy D. Wiles Guest Star Anthony John Denison Guest Star John DeMita Guest Star Kerrie Keane Guest Star Kevin Alejandro Guest Star Dey Young Guest Star Rick Pasqualone Guest Star Alexa Fischer Guest Star Miguel Angel Caballero Guest Star Muttalib Ibrahim Guest Star Meta Golding Guest Star Leslie Ishii Guest Star Colin Bain Guest Star Michael Canavan Guest Star Donald P. Bellisario Executive Producer Charles Floyd Johnson Executive Producer Stephen Zito Executive Producer Mark Horowitz Executive Producer Don McGill Writer Darcy Meyers Writer