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 Karri Turner Ensign, Lt. j.g. Harriet Sims Guest Star Larry Poindexter Guest Star Blake Lindsley Guest Star Steve Eastin Guest Star Anne-Marie Johnson Actor Bill Bolender Guest Star Thom Barry Guest Star Gary Grubbs Guest Star Vaughn Armstrong Guest Star Ron Casal Sanchez Guest Star Nynno Ahli Guest Star Troy Harris Guest Star Mac Weston Guest Star Chuck Carrington Guest Star DeLauné Michel Guest Star Paul Keeley Guest Star Donald P. Bellisario Executive Producer Tony Wharmby Director Stephen Zito Writer