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 Trevor Goddard Guest Star Paul Collins Guest Star Nestor Serrano Guest Star Sydney Walden Guest Star Cindy Ambuehl Guest Star Sean Murray Guest Star Todd Kimsey Guest Star Reed Frerichs Guest Star David A Saunders Guest Star Matt Caspar Guest Star Aymara De Llano Guest Star Gina Gallego Guest Star Scott Williamson Guest Star Camille Saviola Guest Star David Castro Guest Star Dwight Bacquie Guest Star Garrison Hershberger Guest Star Sandra Teres Guest Star H. Cannon Lopez Guest Star Chris Pegula Guest Star Donald P. Bellisario Executive Producer Charles Floyd Johnson Executive Producer Stephen Zito Executive Producer Alan J. Levi Director Dana Coen Writer