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 Michael Gaston Maj. Dougherty Guest Star Brad Hawkins Sgt. Aaron Barnes Guest Star Francesco Quinn Gunnery Sgt. Freddie Alvarez Guest Star Alex Solowitz Dave Guest Star Chad Dorek Leo Guest Star T.J. Thyne Carl Guest Star Zakk Moore Potential Recruit Guest Star Noah Segan Kyle Hendricks Guest Star Sheila E. Frazier Female Reporter Guest Star Kent Shocknek Male Reporter Guest Star Andy Umberger FBI Agent Freedman Guest Star Pancho Demmings Gerald Jackson Guest Star Geoff Meed Cpl. David Stenson Guest Star Blake Shields Potential Recruit Guest Star Donald P. Bellisario Executive Producer Peter Ellis Director Gil Grant Writer