Mark Harmon Narrator, Executive Producer Austin Stowell Leroy Jethro Gibbs Actor Kyle Schmid Mike Franks Actor Mariel Molino Lala Dominguez Actor Tyla Abercrumbie Mary Jo Sullivan Actor Diany Rodriguez Vera Strickland Actor Adam Campbell Dr. Donald "Ducky" Mallard Guest Star Julian Black Antelope Dr. Tango Guest Star Sean Harmon Executive Producer Gina Lucita Monreal Executive Producer David J. North Executive Producer Niels Arden Oplev Executive Producer Margarita Matthews Writer Jessica Lowrey Director