Mark Harmon, who portrayed Leroy Jethro Gibbs in the original NCIS, has recalled actor Austin Stowell’s audition for a younger version of the character in NCIS: Origins, revealing when he knew he’d be perfect for the job. The ongoing NCIS: Origins follows Gibbs in 1991, tackling his first cases with the organization alongside a team of agents. The series serves as a prequel to the ongoing original show, which Harmon previously left in 2021. However, the original actor has since returned to the new show, serving as its narrator and executive producer.