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 Caleb Foote Bernard "Randy" Randolf Actor Sean Harmon Casey Bloom Guest Star, Executive Producer Adam Campbell Dr. Donald "Ducky" Mallard Guest Star Bobby Moynihan Woody Guest Star Gina Lucita Monreal Executive Producer David J. North Executive Producer Niels Arden Oplev Executive Producer Nichole Millard Writer James Whitmore Jr. Director