U.S. Marine Gabriela Flores was at the heart of the investigation on this week's episode of 'NCIS' (Tue., 8PM ET on CBS). After an attack, Flores was presumed dead, but without DNA evidence to confirm, there was uncertainty. Gibbs was determined to give her father the closure he needed by finding out for sure what happened.
We learned a little about Jethro Gibbs' background this week as Mark Harmon's son Sean stepped into play a younger version of his dad during his early days as a Marine. Sean did a fantastic job of capturing all those character quirks that make Gibbs unique.