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 Trisha Yearwood Guest Star Betty Carvalho Guest Star Frank Salsedo Johnny Blackhorse Actor Gregory Cruz Guest Star Grace Renn Guest Star Steve Reevis Guest Star Nick Tate Guest Star Joshua Estrada Guest Star Tim Owens Guest Star Florence Sundstrom Guest Star Lisa Robins Guest Star Donald P. Bellisario Executive Producer Alan J. Levi Director Dana Coen Writer