Guest Stars Matt Craven as Secretary of the Navy Clayton Jarvis Sean Harmon as Young Gibbs Darby Stanchfield as Shannon Gibbs John Finn as Marine Commandant Charles T. Ellison Jeananne Goossen as Marine Private Joan Matteson LaMonica Garrett as Marine Captain Craig Quincy Jaime Ray Newman as Navy Lieutenant Commander Melanie Burke Sofia Pernas as Marine First Lieutenant Gabriela Flores Alex Fernandez as Joseph Flores Dylan Bruce as Justin Fanniker Samantha Sloyan as Emily Goodwin Co Starring Wade Harlan as Marine Cadence Leader
