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 David McCallum Dr. Donald "Ducky" Mallard Actor David Ramsey Special Agent Richard Owens Guest Star Jonathan Wade-Drahos Lt. Greg Pallini Guest Star Travis Aaron Wade Lt. Mark Schilz Guest Star Lauren Bowles Mary Wiles Guest Star Melora Hardin Former Petty Officer Erin Toner Guest Star Jim Pirri Former Ensign Randy Wiles Guest Star Tommy Hinkley Deer Hunter Guest Star Robert Pine Golfer Ben Guest Star Bill Birch State Trooper Dan Lynch Guest Star Donald P. Bellisario Executive Producer, Writer Terrence O'Hara Director