Mark Harmon NCIS Special Agent Leroy Jethro Gibbs Actor Sasha Alexander NCIS Special Agent Caitlin Todd Actor Michael Weatherly NCIS Special Agent Anthony "Tony" Dinozzo Actor Pauley Perrette Forensic Specialist Abby Sciuto Actor Sean Murray NCIS Special Agent Timothy McGee Actor David McCallum Dr. Donald "Ducky" Mallard Actor Charles Durning Ernie Yost Guest Star Alicia Coppola Lt. Cmdr. Faith Coleman Guest Star Hugh B. Holub Superintendent Guest Star Douglas Griffith Lt. Col. Douglas Griffith Guest Star Garette Ratliff Henson Young Cpl. Ernie Yost Guest Star Jason Alan Smith Cpl. Wade Kean Guest Star Bennet Guillory Henry Guest Star Marc D. Wilson M.P. Jenkins Guest Star Kevin Sizemore Sgt. William Moore Guest Star Lloyd Kino Hitoshi Yoshida Guest Star Scott Miles Pvt. Ferris Bellows Guest Star Marc Senter Pvt. Chip Stearns Guest Star Donald P. Bellisario Executive Producer Thomas J. Wright Director Roger Director Writer