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 Bill Cobbs Guest Star Wade Williams Guest Star Jerry Coyle Guest Star Michael Bofshever Guest Star Michaela Conlon Guest Star John Dennis Johnston Guest Star Jeffrey Pierce Guest Star Nicki Micheaux Guest Star Jeremy Davidson Guest Star Steven Anderson Guest Star Michael Ensign Guest Star Maria Quiban Guest Star Mary Ellen Lyon Guest Star Donald P. Bellisario Executive Producer Charles Floyd Johnson Executive Producer Stephen Zito Executive Producer Mark Horowitz Executive Producer Stephen Cragg Director Paul Levine Writer