Mark Harmon NCIS Special Agent Leroy Jethro Gibbs Actor, Executive Producer Michael Weatherly NCIS Special Agent Anthony "Tony" Dinozzo Actor Pauley Perrette Forensic Specialist Abby Sciuto Actor Sean Murray NCIS Special Agent Timothy McGee Actor Brian Dietzen Dr. Jimmy Palmer Actor Rocky Carroll NCIS Director Leon Vance Actor David McCallum Dr. Donald "Ducky" Mallard Actor Diane Neal CGIS Agent Abigail Borin Guest Star Leslie Hope Secretary of the Navy Sarah Porter Guest Star William Ragsdale Brett Creevy Guest Star Rodney Rowland Jonah Maguire Guest Star Jon Lindstrom Perry Davidson Guest Star Rick Gonzalez Lenny Machaca Guest Star Chelsea Harris Danielle Benton Guest Star Fay Masterson Gloria Hebner Guest Star Brent Huff Marv Hebner Guest Star Michael Buonomo Coast Guard Petty Officer 3rd Class Dennis Latrobe Guest Star Peter Downing Captain Guest Star Gary Glasberg Executive Producer Chas. Floyd Johnson Executive Producer Mark Horowitz Executive Producer Shane Brennan Executive Producer Donald P. Bellisario Executive Producer Jennifer Corbett Writer Thomas J. Wright Director