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 Scott Lawrence Cmdr. Sturgis Turner Actor Zoe McLellan Petty Officer Jennifer Coates Guest Star Mary Page Keller Guest Star Michael Bellisario Guest Star Jeff MacKay Guest Star Vicellous Reon Shannon Guest Star Dan Lauria Guest Star Michael Warren Guest Star Keone Young Guest Star Lauren Birkell Guest Star Dana Lee Guest Star Vladimir Velasco Guest Star Manny Gavino Guest Star Ernesto Tan Guest Star Matthew Josten Guest Star Donald P. Bellisario Executive Producer Charles Floyd Johnson Executive Producer Stephen Zito Executive Producer Mark Horowitz Executive Producer Bradford May Director Darcy Meyers Writer