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 Scott Lawrence Cmdr. Sturgis Turner Actor Zoe McLellan Petty Officer Jennifer Coates Guest Star John DeMita Guest Star Adam Baldwin Guest Star Douglas Spain Guest Star Tamara Mello Guest Star Steven Flynn Guest Star Chris Ellis Guest Star Tom Schanley Guest Star Winifred Freedman Guest Star Jessica Stier Guest Star Donnie Jeffcoat Guest Star Michael Eric Strickland Guest Star Melinda Sward Guest Star Alex Scarlis Guest Star Donald P. Bellisario Executive Producer Charles Floyd Johnson Executive Producer Stephen Zito Executive Producer Mark Horowitz Executive Producer Michael Fresco Director Thomas L. Moran Writer