It was one of the best weeks, the Illinois native tells EW.

That’s one of my tops, Dietzen says.

That’s probably my favorite one.

LOS ANGELES - OCTOBER 31: “Keep Going” – During an NCIS hit-and-run investigation, Palmer joins a stranger on the outside ledge of a building in an attempt to save his life, on NCIS, Tuesday, Jan. 24 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Pictured: Mark Harmon, Wilmer Valderrama, Brian Dietzen, Spencer Treat Clark

Mark Harmon, Wilmer Valderrama, Brian Dietzen, Spencer Treat Clark in the episode ‘Keep Going’.Monty Brinton/CBS via Getty

Luckily for him, theNCIScrew is full of fellow Cubs fans who gave assists from the ground.

Chad Erickson is one of our camera guys, and Id look down between takes.

He was like a first-base coach giving me signs on what the score was and what the count was.

And then Id rush home and venture to watch the last few innings, Dietzen says.

It was one of the best weeks.

3 overall with a 9.2 audience rating on IMDb.com.

It’s a wonderful thing as an actor.

It really turned into just a two-man play out there on the ledge, Dietzen says.

That was a special one for me, for sure.

And he just goes, Probie.

Its such a good episode!

And Sean is so good in it, Dietzen says.

I was like, Dude, you’re right.

That’s a fantastic episode.

My son didn’t exist when the show started, and neither did Seans kids.

Dietzen says with a laugh.

Its like, Honey, this is the Midwest.

Its not Los Angeles.

People just are really nice here.

They’ll bring cupcakes to the Cubs games.'"

NCISairs Mondays at 9 p.m. ET/PT on CBS.