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 Randy Vasquez Guest Star Chuck Carrington Guest Star Scott Lawrence Cmdr. Sturgis Turner Guest Star Karri Turner Ensign, Lt. j.g. Harriet Sims Guest Star Sam Hennings Guest Star Scott Williamson Guest Star Jim Fitzpatrick Guest Star Kerrie Keane Guest Star Ashley Eckstein Guest Star James Black Guest Star Jeff Corbett Guest Star Nicholas Guilak Guest Star Art Chudabala Guest Star Lee Ryan Guest Star Louis Cruganali Guest Star June Christopher Guest Star Donald P. Bellisario Executive Producer Charles Floyd Johnson Executive Producer Stephen Zito Executive Producer Bradford May Director Dana Coen Writer