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 Actor Michael Bellisario Guest Star Elijah Alexander Guest Star Joseph Cannon Guest Star Michael Des Barres Guest Star Roger Cross Guest Star Adam Grimes Guest Star Iqbal Theba Guest Star Yawqar Charlie Guest Star Vince Corazza Guest Star Ian Bohen Guest Star Will Finlay Guest Star Jennifer Sommerfield Guest Star Jerod Edington Guest Star Summer Schaeffer Guest Star Mark Riley Wilkinson Guest Star Jonathan Barton Guest Star Matt Sigloch Guest Star Donald P. Bellisario Executive Producer Charles Floyd Johnson Executive Producer Stephen Zito Executive Producer Mark Horowitz Executive Producer Peter Ellis Director Darcy Meyers Writer