5 Ridiculously Awesome NCIS: Los Angeles Facts - "Iron Curtain Rising"

The airport used in this episode is Burbank Airport, a location NCIS:Los Angeles has used several times, most recently this season in "Impact."

Did you know "Danger, Will Robinson!" is a catchphrase from the classic television show "Lost in Space?"

This scene was shot at Blue Cloud Ranch in Santa Clarita, about 35 miles north of Hollywood.

The last episode to begin in a restaurant was Season Three's "Fifth Man," which featured seemingly random people meeting in an empty diner.

The Hetty Robot is from a company called Double Robotics, an Australian technology company. The technical term is a "remote presence robot", and people have used it to deliver conference papers, participate in class while sick at home, and even attend weddings.

 Watch the full episode with Sync for more behind the scenes info here!