In real life, Jon Huertas is an Air Force veteran. Many of his TV and movie credits are of characters with active or past Marine background: Ramirez, a Marine Recon Sniper Spotter in JAG, Recon Marine Sergeant Espera in Generation Kill, Homicide NYPD Detective and former Special Forces Javier Esposito in Castle, retired Marine Sergeant Jack Kale in NCIS.